[Assignment-7] add SGX sample code from VM

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/HelloEnclave/App/App.cpp

@@ -0,0 +1,252 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+
+# include <unistd.h>
+# include <pwd.h>
+# define MAX_PATH FILENAME_MAX
+
+#include "sgx_urts.h"
+#include "App.h"
+#include "Enclave_u.h"
+
+/* Global EID shared by multiple threads */
+sgx_enclave_id_t global_eid = 0;
+
+typedef struct _sgx_errlist_t {
+    sgx_status_t err;
+    const char *msg;
+    const char *sug; /* Suggestion */
+} sgx_errlist_t;
+
+/* Error code returned by sgx_create_enclave */
+static sgx_errlist_t sgx_errlist[] = {
+    {
+        SGX_ERROR_UNEXPECTED,
+        "Unexpected error occurred.",
+        NULL
+    },
+    {
+        SGX_ERROR_INVALID_PARAMETER,
+        "Invalid parameter.",
+        NULL
+    },
+    {
+        SGX_ERROR_OUT_OF_MEMORY,
+        "Out of memory.",
+        NULL
+    },
+    {
+        SGX_ERROR_ENCLAVE_LOST,
+        "Power transition occurred.",
+        "Please refer to the sample \"PowerTransition\" for details."
+    },
+    {
+        SGX_ERROR_INVALID_ENCLAVE,
+        "Invalid enclave image.",
+        NULL
+    },
+    {
+        SGX_ERROR_INVALID_ENCLAVE_ID,
+        "Invalid enclave identification.",
+        NULL
+    },
+    {
+        SGX_ERROR_INVALID_SIGNATURE,
+        "Invalid enclave signature.",
+        NULL
+    },
+    {
+        SGX_ERROR_OUT_OF_EPC,
+        "Out of EPC memory.",
+        NULL
+    },
+    {
+        SGX_ERROR_NO_DEVICE,
+        "Invalid SGX device.",
+        "Please make sure SGX module is enabled in the BIOS, and install SGX driver afterwards."
+    },
+    {
+        SGX_ERROR_MEMORY_MAP_CONFLICT,
+        "Memory map conflicted.",
+        NULL
+    },
+    {
+        SGX_ERROR_INVALID_METADATA,
+        "Invalid enclave metadata.",
+        NULL
+    },
+    {
+        SGX_ERROR_DEVICE_BUSY,
+        "SGX device was busy.",
+        NULL
+    },
+    {
+        SGX_ERROR_INVALID_VERSION,
+        "Enclave version was invalid.",
+        NULL
+    },
+    {
+        SGX_ERROR_INVALID_ATTRIBUTE,
+        "Enclave was not authorized.",
+        NULL
+    },
+    {
+        SGX_ERROR_ENCLAVE_FILE_ACCESS,
+        "Can't open enclave file.",
+        NULL
+    },
+};
+
+/* Check error conditions for loading enclave */
+void print_error_message(sgx_status_t ret)
+{
+    size_t idx = 0;
+    size_t ttl = sizeof sgx_errlist/sizeof sgx_errlist[0];
+
+    for (idx = 0; idx < ttl; idx++) {
+        if(ret == sgx_errlist[idx].err) {
+            if(NULL != sgx_errlist[idx].sug)
+                printf("Info: %s\n", sgx_errlist[idx].sug);
+            printf("Error: %s\n", sgx_errlist[idx].msg);
+            break;
+        }
+    }
+    
+    if (idx == ttl)
+    	printf("Error code is 0x%X. Please refer to the \"Intel SGX SDK Developer Reference\" for more details.\n", ret);
+}
+
+/* Initialize the enclave:
+ *   Step 1: try to retrieve the launch token saved by last transaction
+ *   Step 2: call sgx_create_enclave to initialize an enclave instance
+ *   Step 3: save the launch token if it is updated
+ */
+int initialize_enclave(void)
+{
+    char token_path[MAX_PATH] = {'\0'};
+    sgx_launch_token_t token = {0};
+    sgx_status_t ret = SGX_ERROR_UNEXPECTED;
+    int updated = 0;
+    
+    /* Step 1: try to retrieve the launch token saved by last transaction 
+     *         if there is no token, then create a new one.
+     */
+    /* try to get the token saved in $HOME */
+    const char *home_dir = getpwuid(getuid())->pw_dir;
+    
+    if (home_dir != NULL && 
+        (strlen(home_dir)+strlen("/")+sizeof(TOKEN_FILENAME)+1) <= MAX_PATH) {
+        /* compose the token path */
+        strncpy(token_path, home_dir, strlen(home_dir));
+        strncat(token_path, "/", strlen("/"));
+        strncat(token_path, TOKEN_FILENAME, sizeof(TOKEN_FILENAME)+1);
+    } else {
+        /* if token path is too long or $HOME is NULL */
+        strncpy(token_path, TOKEN_FILENAME, sizeof(TOKEN_FILENAME));
+    }
+
+    FILE *fp = fopen(token_path, "rb");
+    if (fp == NULL && (fp = fopen(token_path, "wb")) == NULL) {
+        printf("Warning: Failed to create/open the launch token file \"%s\".\n", token_path);
+    }
+
+    if (fp != NULL) {
+        /* read the token from saved file */
+        size_t read_num = fread(token, 1, sizeof(sgx_launch_token_t), fp);
+        if (read_num != 0 && read_num != sizeof(sgx_launch_token_t)) {
+            /* if token is invalid, clear the buffer */
+            memset(&token, 0x0, sizeof(sgx_launch_token_t));
+            printf("Warning: Invalid launch token read from \"%s\".\n", token_path);
+        }
+    }
+    /* Step 2: call sgx_create_enclave to initialize an enclave instance */
+    /* Debug Support: set 2nd parameter to 1 */
+    ret = sgx_create_enclave(ENCLAVE_FILENAME, SGX_DEBUG_FLAG, &token, &updated, &global_eid, NULL);
+    if (ret != SGX_SUCCESS) {
+        print_error_message(ret);
+        if (fp != NULL) fclose(fp);
+        return -1;
+    }
+
+    /* Step 3: save the launch token if it is updated */
+    if (updated == FALSE || fp == NULL) {
+        /* if the token is not updated, or file handler is invalid, do not perform saving */
+        if (fp != NULL) fclose(fp);
+        return 0;
+    }
+
+    /* reopen the file with write capablity */
+    fp = freopen(token_path, "wb", fp);
+    if (fp == NULL) return 0;
+    size_t write_num = fwrite(token, 1, sizeof(sgx_launch_token_t), fp);
+    if (write_num != sizeof(sgx_launch_token_t))
+        printf("Warning: Failed to save launch token to \"%s\".\n", token_path);
+    fclose(fp);
+    return 0;
+}
+
+/* OCall functions */
+void ocall_print_string(const char *str)
+{
+    /* Proxy/Bridge will check the length and null-terminate 
+     * the input string to prevent buffer overflow. 
+     */
+    printf("%s", str);
+}
+
+
+/* Application entry */
+int SGX_CDECL main(int argc, char *argv[])
+{
+    (void)(argc);
+    (void)(argv);
+
+
+    /* Initialize the enclave */
+    if(initialize_enclave() < 0){
+        printf("Enter a character before exit ...\n");
+        getchar();
+        return -1; 
+    }
+ 
+    printf_helloworld(global_eid);
+
+    /* Destroy the enclave */
+    sgx_destroy_enclave(global_eid);
+    
+    return 0;
+}
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/HelloEnclave/App/App.h

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef _APP_H_
+#define _APP_H_
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+#include "sgx_error.h"       /* sgx_status_t */
+#include "sgx_eid.h"     /* sgx_enclave_id_t */
+
+#ifndef TRUE
+# define TRUE 1
+#endif
+
+#ifndef FALSE
+# define FALSE 0
+#endif
+
+# define TOKEN_FILENAME   "enclave.token"
+# define ENCLAVE_FILENAME "enclave.signed.so"
+
+extern sgx_enclave_id_t global_eid;    /* global enclave id */
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* !_APP_H_ */

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/HelloEnclave/Enclave/Enclave.config.xml

@@ -0,0 +1,12 @@
+<EnclaveConfiguration>
+  <ProdID>0</ProdID>
+  <ISVSVN>0</ISVSVN>
+  <StackMaxSize>0x40000</StackMaxSize>
+  <HeapMaxSize>0x100000</HeapMaxSize>
+  <TCSNum>10</TCSNum>
+  <TCSPolicy>1</TCSPolicy>
+  <!-- Recommend changing 'DisableDebug' to 1 to make the enclave undebuggable for enclave release -->
+  <DisableDebug>0</DisableDebug>
+  <MiscSelect>0</MiscSelect>
+  <MiscMask>0xFFFFFFFF</MiscMask>
+</EnclaveConfiguration>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/HelloEnclave/Enclave/Enclave.cpp

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include <stdarg.h>
+#include <stdio.h>      /* vsnprintf */
+
+#include "Enclave.h"
+#include "Enclave_t.h"  /* print_string */
+
+/* 
+ * printf: 
+ *   Invokes OCALL to display the enclave buffer to the terminal.
+ */
+void printf(const char *fmt, ...)
+{
+    char buf[BUFSIZ] = {'\0'};
+    va_list ap;
+    va_start(ap, fmt);
+    vsnprintf(buf, BUFSIZ, fmt, ap);
+    va_end(ap);
+    ocall_print_string(buf);
+}
+
+void printf_helloworld()
+{
+    printf("Hello World\n");
+}
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/HelloEnclave/Enclave/Enclave.edl

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/* Enclave.edl - Top EDL file. */
+
+enclave {
+    
+    /* Import ECALL/OCALL from sub-directory EDLs.
+     *  [from]: specifies the location of EDL file. 
+     *  [import]: specifies the functions to import, 
+     *  [*]: implies to import all functions.
+     */
+    
+    trusted {
+        public void printf_helloworld();
+    };
+
+    /* 
+     * ocall_print_string - invokes OCALL to display string buffer inside the enclave.
+     *  [in]: copy the string buffer to App outside.
+     *  [string]: specifies 'str' is a NULL terminated buffer.
+     */
+    untrusted {
+        void ocall_print_string([in, string] const char *str);
+    };
+
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/HelloEnclave/Enclave/Enclave.h

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef _ENCLAVE_H_
+#define _ENCLAVE_H_
+
+#include <stdlib.h>
+#include <assert.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+void printf(const char *fmt, ...);
+void printf_helloworld();
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* !_ENCLAVE_H_ */

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/HelloEnclave/Enclave/Enclave.lds

@@ -0,0 +1,10 @@
+enclave.so
+{
+    global:
+        g_global_data_sim;
+        g_global_data;
+        enclave_entry;
+        g_peak_heap_used;
+    local:
+        *;
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/HelloEnclave/Enclave/Enclave_private.pem

@@ -0,0 +1,39 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIG4gIBAAKCAYEAroOogvsj/fZDZY8XFdkl6dJmky0lRvnWMmpeH41Bla6U1qLZ
+AmZuyIF+mQC/cgojIsrBMzBxb1kKqzATF4+XwPwgKz7fmiddmHyYz2WDJfAjIveJ
+ZjdMjM4+EytGlkkJ52T8V8ds0/L2qKexJ+NBLxkeQLfV8n1mIk7zX7jguwbCG1Pr
+nEMdJ3Sew20vnje+RsngAzdPChoJpVsWi/K7cettX/tbnre1DL02GXc5qJoQYk7b
+3zkmhz31TgFrd9VVtmUGyFXAysuSAb3EN+5VnHGr0xKkeg8utErea2FNtNIgua8H
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+K7kfDeRskKxESdsA/xCrKkwGwhcx1iIgS5+Qscd1Yg+1D9X9asd/P7waPmWoZd+Z
+AhlKwhdPsO7PiF3e1AzHhGQwsUTt/Y/aSI1MpHBvy2/s1h9mFCslOUxTmWw0oj/Q
+ldIEgWeNR72CE2+jFIJIyml6ftnb6qzPiga8Bm48ubKh0kvySOqnkmnPzgh+JBD6
+JnBmtZbfPT97bwTT+N6rnPqOOApvfHPf15kWI8yDbprG1l4OCUaIUH1AszxLd826
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+wKzFELO8NCEAkaTPxwo4SCyIjUxiK1LbQ9h8PSy4c1+gGP4LAMR8xqP4QKg6zdu9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+-----END RSA PRIVATE KEY-----

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/HelloEnclave/Makefile

@@ -0,0 +1,249 @@
+#
+# Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of Intel Corporation nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#
+
+######## SGX SDK Settings ########
+
+SGX_SDK ?= /opt/intel/sgxsdk
+SGX_MODE ?= HW
+SGX_ARCH ?= x64
+SGX_DEBUG ?= 1
+
+ifeq ($(shell getconf LONG_BIT), 32)
+	SGX_ARCH := x86
+else ifeq ($(findstring -m32, $(CXXFLAGS)), -m32)
+	SGX_ARCH := x86
+endif
+
+ifeq ($(SGX_ARCH), x86)
+	SGX_COMMON_CFLAGS := -m32
+	SGX_LIBRARY_PATH := $(SGX_SDK)/lib
+	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x86/sgx_sign
+	SGX_EDGER8R := $(SGX_SDK)/bin/x86/sgx_edger8r
+else
+	SGX_COMMON_CFLAGS := -m64
+	SGX_LIBRARY_PATH := $(SGX_SDK)/lib64
+	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x64/sgx_sign
+	SGX_EDGER8R := $(SGX_SDK)/bin/x64/sgx_edger8r
+endif
+
+ifeq ($(SGX_DEBUG), 1)
+ifeq ($(SGX_PRERELEASE), 1)
+$(error Cannot set SGX_DEBUG and SGX_PRERELEASE at the same time!!)
+endif
+endif
+
+ifeq ($(SGX_DEBUG), 1)
+        SGX_COMMON_CFLAGS += -O0 -g
+else
+        SGX_COMMON_CFLAGS += -O2
+endif
+
+######## App Settings ########
+
+ifneq ($(SGX_MODE), HW)
+	Urts_Library_Name := sgx_urts_sim
+else
+	Urts_Library_Name := sgx_urts
+endif
+
+App_Cpp_Files := App/App.cpp
+App_Include_Paths := -IInclude -IApp -I$(SGX_SDK)/include
+
+App_C_Flags := $(SGX_COMMON_CFLAGS) -fPIC -Wno-attributes $(App_Include_Paths)
+
+# Three configuration modes - Debug, prerelease, release
+#   Debug - Macro DEBUG enabled.
+#   Prerelease - Macro NDEBUG and EDEBUG enabled.
+#   Release - Macro NDEBUG enabled.
+ifeq ($(SGX_DEBUG), 1)
+        App_C_Flags += -DDEBUG -UNDEBUG -UEDEBUG
+else ifeq ($(SGX_PRERELEASE), 1)
+        App_C_Flags += -DNDEBUG -DEDEBUG -UDEBUG
+else
+        App_C_Flags += -DNDEBUG -UEDEBUG -UDEBUG
+endif
+
+App_Cpp_Flags := $(App_C_Flags) -std=c++11
+App_Link_Flags := $(SGX_COMMON_CFLAGS) -L$(SGX_LIBRARY_PATH) -l$(Urts_Library_Name) -lpthread 
+
+ifneq ($(SGX_MODE), HW)
+	App_Link_Flags += -lsgx_uae_service_sim
+else
+	App_Link_Flags += -lsgx_uae_service
+endif
+
+App_Cpp_Objects := $(App_Cpp_Files:.cpp=.o)
+
+App_Name := app
+
+######## Enclave Settings ########
+
+ifneq ($(SGX_MODE), HW)
+	Trts_Library_Name := sgx_trts_sim
+	Service_Library_Name := sgx_tservice_sim
+else
+	Trts_Library_Name := sgx_trts
+	Service_Library_Name := sgx_tservice
+endif
+Crypto_Library_Name := sgx_tcrypto
+
+Enclave_Cpp_Files := Enclave/Enclave.cpp
+Enclave_Include_Paths := -IInclude -IEnclave -I$(SGX_SDK)/include -I$(SGX_SDK)/include/tlibc -I$(SGX_SDK)/include/libcxx
+
+CC_BELOW_4_9 := $(shell expr "`$(CC) -dumpversion`" \< "4.9")
+ifeq ($(CC_BELOW_4_9), 1)
+	Enclave_C_Flags := $(SGX_COMMON_CFLAGS) -nostdinc -fvisibility=hidden -fpie -ffunction-sections -fdata-sections -fstack-protector
+else
+	Enclave_C_Flags := $(SGX_COMMON_CFLAGS) -nostdinc -fvisibility=hidden -fpie -ffunction-sections -fdata-sections -fstack-protector-strong
+endif
+
+Enclave_C_Flags += $(Enclave_Include_Paths)
+Enclave_Cpp_Flags := $(Enclave_C_Flags) -std=c++11 -nostdinc++
+
+# To generate a proper enclave, it is recommended to follow below guideline to link the trusted libraries:
+#    1. Link sgx_trts with the `--whole-archive' and `--no-whole-archive' options,
+#       so that the whole content of trts is included in the enclave.
+#    2. For other libraries, you just need to pull the required symbols.
+#       Use `--start-group' and `--end-group' to link these libraries.
+# Do NOT move the libraries linked with `--start-group' and `--end-group' within `--whole-archive' and `--no-whole-archive' options.
+# Otherwise, you may get some undesirable errors.
+Enclave_Link_Flags := $(SGX_COMMON_CFLAGS) -Wl,--no-undefined -nostdlib -nodefaultlibs -nostartfiles -L$(SGX_LIBRARY_PATH) \
+	-Wl,--whole-archive -l$(Trts_Library_Name) -Wl,--no-whole-archive \
+	-Wl,--start-group -lsgx_tstdc -lsgx_tcxx -l$(Crypto_Library_Name) -l$(Service_Library_Name) -Wl,--end-group \
+	-Wl,-Bstatic -Wl,-Bsymbolic -Wl,--no-undefined \
+	-Wl,-pie,-eenclave_entry -Wl,--export-dynamic  \
+	-Wl,--defsym,__ImageBase=0 -Wl,--gc-sections   \
+	-Wl,--version-script=Enclave/Enclave.lds
+
+Enclave_Cpp_Objects := $(Enclave_Cpp_Files:.cpp=.o)
+
+Enclave_Name := enclave.so
+Signed_Enclave_Name := enclave.signed.so
+Enclave_Config_File := Enclave/Enclave.config.xml
+
+ifeq ($(SGX_MODE), HW)
+ifeq ($(SGX_DEBUG), 1)
+	Build_Mode = HW_DEBUG
+else ifeq ($(SGX_PRERELEASE), 1)
+	Build_Mode = HW_PRERELEASE
+else
+	Build_Mode = HW_RELEASE
+endif
+else
+ifeq ($(SGX_DEBUG), 1)
+	Build_Mode = SIM_DEBUG
+else ifeq ($(SGX_PRERELEASE), 1)
+	Build_Mode = SIM_PRERELEASE
+else
+	Build_Mode = SIM_RELEASE
+endif
+endif
+
+
+.PHONY: all run
+
+ifeq ($(Build_Mode), HW_RELEASE)
+all: .config_$(Build_Mode)_$(SGX_ARCH) $(App_Name) $(Enclave_Name)
+	@echo "The project has been built in release hardware mode."
+	@echo "Please sign the $(Enclave_Name) first with your signing key before you run the $(App_Name) to launch and access the enclave."
+	@echo "To sign the enclave use the command:"
+	@echo "   $(SGX_ENCLAVE_SIGNER) sign -key <your key> -enclave $(Enclave_Name) -out <$(Signed_Enclave_Name)> -config $(Enclave_Config_File)"
+	@echo "You can also sign the enclave using an external signing tool."
+	@echo "To build the project in simulation mode set SGX_MODE=SIM. To build the project in prerelease mode set SGX_PRERELEASE=1 and SGX_MODE=HW."
+else
+all: .config_$(Build_Mode)_$(SGX_ARCH) $(App_Name) $(Signed_Enclave_Name)
+ifeq ($(Build_Mode), HW_DEBUG)
+	@echo "The project has been built in debug hardware mode."
+else ifeq ($(Build_Mode), SIM_DEBUG)
+	@echo "The project has been built in debug simulation mode."
+else ifeq ($(Build_Mode), HW_PRERELEASE)
+	@echo "The project has been built in pre-release hardware mode."
+else ifeq ($(Build_Mode), SIM_PRERELEASE)
+	@echo "The project has been built in pre-release simulation mode."
+else
+	@echo "The project has been built in release simulation mode."
+endif
+endif
+
+run: all
+ifneq ($(Build_Mode), HW_RELEASE)
+	@$(CURDIR)/$(App_Name)
+	@echo "RUN  =>  $(App_Name) [$(SGX_MODE)|$(SGX_ARCH), OK]"
+endif
+
+######## App Objects ########
+
+App/Enclave_u.c: $(SGX_EDGER8R) Enclave/Enclave.edl
+	@cd App && $(SGX_EDGER8R) --untrusted ../Enclave/Enclave.edl --search-path ../Enclave --search-path $(SGX_SDK)/include
+	@echo "GEN  =>  $@"
+
+App/Enclave_u.o: App/Enclave_u.c
+	@$(CC) $(App_C_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+App/%.o: App/%.cpp
+	@$(CXX) $(App_Cpp_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+$(App_Name): App/Enclave_u.o $(App_Cpp_Objects)
+	@$(CXX) $^ -o $@ $(App_Link_Flags)
+	@echo "LINK =>  $@"
+
+.config_$(Build_Mode)_$(SGX_ARCH):
+	@rm -f .config_* $(App_Name) $(Enclave_Name) $(Signed_Enclave_Name) $(App_Cpp_Objects) App/Enclave_u.* $(Enclave_Cpp_Objects) Enclave/Enclave_t.*
+	@touch .config_$(Build_Mode)_$(SGX_ARCH)
+
+######## Enclave Objects ########
+
+Enclave/Enclave_t.c: $(SGX_EDGER8R) Enclave/Enclave.edl
+	@cd Enclave && $(SGX_EDGER8R) --trusted ../Enclave/Enclave.edl --search-path ../Enclave --search-path $(SGX_SDK)/include
+	@echo "GEN  =>  $@"
+
+Enclave/Enclave_t.o: Enclave/Enclave_t.c
+	@$(CC) $(Enclave_C_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+Enclave/%.o: Enclave/%.cpp
+	@$(CXX) $(Enclave_Cpp_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+$(Enclave_Name): Enclave/Enclave_t.o $(Enclave_Cpp_Objects)
+	@$(CXX) $^ -o $@ $(Enclave_Link_Flags)
+	@echo "LINK =>  $@"
+
+$(Signed_Enclave_Name): $(Enclave_Name)
+	@$(SGX_ENCLAVE_SIGNER) sign -key Enclave/Enclave_private.pem -enclave $(Enclave_Name) -out $@ -config $(Enclave_Config_File)
+	@echo "SIGN =>  $@"
+
+.PHONY: clean
+
+clean:
+	@rm -f .config_* $(App_Name) $(Enclave_Name) $(Signed_Enclave_Name) $(App_Cpp_Objects) App/Enclave_u.* $(Enclave_Cpp_Objects) Enclave/Enclave_t.*

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/.gitignore

@@ -0,0 +1,55 @@
+# Prerequisites
+*.d
+
+# Object files
+*.o
+*.ko
+*.obj
+*.elf
+
+# Linker output
+*.ilk
+*.map
+*.exp
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Libraries
+*.lib
+*.a
+*.la
+*.lo
+
+# Shared objects (inc. Windows DLLs)
+*.dll
+*.so
+*.so.*
+*.dylib
+
+# Executables
+*.exe
+*.out
+*.app
+*.i*86
+*.x86_64
+*.hex
+
+# Debug files
+*.dSYM/
+*.su
+*.idb
+*.pdb
+
+# Kernel Module Compile Results
+*.mod*
+*.cmd
+.tmp_versions/
+modules.order
+Module.symvers
+Mkfile.old
+dkms.conf
+
+# Apple .DS_Store files
+.DS_Store

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/Makefile

@@ -0,0 +1,209 @@
+#
+# Copyright (C) 2011-2016 Intel Corporation. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of Intel Corporation nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#
+
+######## SGX SDK Settings ########
+
+SGX_SDK ?= /opt/intel/sgxsdk
+SGX_MODE ?= SIM
+SGX_ARCH ?= x64
+
+ifeq ($(shell getconf LONG_BIT), 32)
+	SGX_ARCH := x86
+else ifeq ($(findstring -m32, $(CXXFLAGS)), -m32)
+	SGX_ARCH := x86
+endif
+
+ifeq ($(SGX_ARCH), x86)
+	SGX_COMMON_CFLAGS := -m32
+	SGX_LIBRARY_PATH := $(SGX_SDK)/lib
+	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x86/sgx_sign
+	SGX_EDGER8R := $(SGX_SDK)/bin/x86/sgx_edger8r
+else
+	SGX_COMMON_CFLAGS := -m64
+	SGX_LIBRARY_PATH := $(SGX_SDK)/lib64
+	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x64/sgx_sign
+	SGX_EDGER8R := $(SGX_SDK)/bin/x64/sgx_edger8r
+endif
+
+ifeq ($(SGX_DEBUG), 1)
+ifeq ($(SGX_PRERELEASE), 1)
+$(error Cannot set SGX_DEBUG and SGX_PRERELEASE at the same time!!)
+endif
+endif
+
+ifeq ($(SGX_DEBUG), 1)
+		SGX_COMMON_CFLAGS += -O0 -g
+else
+		SGX_COMMON_CFLAGS += -O2
+endif
+
+######## App Settings ########
+
+ifneq ($(SGX_MODE), HW)
+	Urts_Library_Name := sgx_urts_sim
+else
+	Urts_Library_Name := sgx_urts
+endif
+
+App_Cpp_Files := app/app.cpp app/utils.cpp
+App_Include_Paths := -Iapp -I$(SGX_SDK)/include -Iinclude -Itest
+
+App_C_Flags := $(SGX_COMMON_CFLAGS) -fPIC -Wno-attributes $(App_Include_Paths)
+
+# Three configuration modes - Debug, prerelease, release
+#   Debug - Macro DEBUG enabled.
+#   Prerelease - Macro NDEBUG and EDEBUG enabled.
+#   Release - Macro NDEBUG enabled.
+ifeq ($(SGX_DEBUG), 1)
+		App_C_Flags += -DDEBUG -UNDEBUG -UEDEBUG
+else ifeq ($(SGX_PRERELEASE), 1)
+		App_C_Flags += -DNDEBUG -DEDEBUG -UDEBUG
+else
+		App_C_Flags += -DNDEBUG -UEDEBUG -UDEBUG
+endif
+
+App_Cpp_Flags := $(App_C_Flags) -std=c++11
+App_Link_Flags := $(SGX_COMMON_CFLAGS) -L$(SGX_LIBRARY_PATH) -l$(Urts_Library_Name) -lpthread
+
+ifneq ($(SGX_MODE), HW)
+	App_Link_Flags += -lsgx_uae_service_sim
+else
+	App_Link_Flags += -lsgx_uae_service
+endif
+
+App_Cpp_Objects := $(App_Cpp_Files:.cpp=.o)
+
+App_Name := sgx-wallet
+
+######## Enclave Settings ########
+
+ifneq ($(SGX_MODE), HW)
+	Trts_Library_Name := sgx_trts_sim
+	Service_Library_Name := sgx_tservice_sim
+else
+	Trts_Library_Name := sgx_trts
+	Service_Library_Name := sgx_tservice
+endif
+Crypto_Library_Name := sgx_tcrypto
+
+Enclave_Cpp_Files := enclave/enclave.cpp enclave/sealing/sealing.cpp
+Enclave_Include_Paths := -Ienclave -Iinclude -I$(SGX_SDK)/include -I$(SGX_SDK)/include/tlibc -I$(SGX_SDK)/include/stlport
+
+Enclave_C_Flags := $(SGX_COMMON_CFLAGS) -nostdinc -fvisibility=hidden -fpie -fstack-protector $(Enclave_Include_Paths)
+Enclave_Cpp_Flags := $(Enclave_C_Flags) -std=c++03 -nostdinc++
+Enclave_Link_Flags := $(SGX_COMMON_CFLAGS) -Wl,--no-undefined -nostdlib -nodefaultlibs -nostartfiles -L$(SGX_LIBRARY_PATH) \
+	-Wl,--whole-archive -l$(Trts_Library_Name) -Wl,--no-whole-archive \
+	-Wl,--start-group -lsgx_tstdc -lsgx_tstdcxx -l$(Crypto_Library_Name) -l$(Service_Library_Name) -Wl,--end-group \
+	-Wl,-Bstatic -Wl,-Bsymbolic -Wl,--no-undefined \
+	-Wl,-pie,-eenclave_entry -Wl,--export-dynamic  \
+	-Wl,--defsym,__ImageBase=0
+	# -Wl,--version-script=Enclave/Enclave.lds
+
+Enclave_Cpp_Objects := $(Enclave_Cpp_Files:.cpp=.o)
+
+Enclave_Name := enclave.so
+Signed_Enclave_Name := enclave.signed.so
+Enclave_Config_File := enclave/enclave.config.xml
+
+ifeq ($(SGX_MODE), HW)
+ifneq ($(SGX_DEBUG), 1)
+ifneq ($(SGX_PRERELEASE), 1)
+Build_Mode = HW_RELEASE
+endif
+endif
+endif
+
+
+.PHONY: all run
+
+ifeq ($(Build_Mode), HW_RELEASE)
+all: $(App_Name) $(Enclave_Name)
+	@echo "The project has been built in release hardware mode."
+	@echo "Please sign the $(Enclave_Name) first with your signing key before you run the $(App_Name) to launch and access the enclave."
+	@echo "To sign the enclave use the command:"
+	@echo "   $(SGX_ENCLAVE_SIGNER) sign -key <your key> -enclave $(Enclave_Name) -out <$(Signed_Enclave_Name)> -config $(Enclave_Config_File)"
+	@echo "You can also sign the enclave using an external signing tool. See User's Guide for more details."
+	@echo "To build the project in simulation mode set SGX_MODE=SIM. To build the project in prerelease mode set SGX_PRERELEASE=1 and SGX_MODE=HW."
+else
+all: $(App_Name) $(Signed_Enclave_Name)
+endif
+
+run: all
+ifneq ($(Build_Mode), HW_RELEASE)
+	@$(CURDIR)/$(App_Name)
+	@echo "RUN  =>  $(App_Name) [$(SGX_MODE)|$(SGX_ARCH), OK]"
+endif
+
+######## App Objects ########
+
+app/enclave_u.c: $(SGX_EDGER8R) enclave/enclave.edl
+	@cd app && $(SGX_EDGER8R) --untrusted ../enclave/enclave.edl --search-path ../enclave --search-path $(SGX_SDK)/include
+	@echo "GEN  =>  $@"
+
+app/enclave_u.o: app/enclave_u.c
+	@$(CC) $(App_C_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+app/%.o: app/%.cpp
+	@$(CXX) $(App_Cpp_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+$(App_Name): app/enclave_u.o $(App_Cpp_Objects)
+	@$(CXX) $^ -o $@ $(App_Link_Flags)
+	@echo "LINK =>  $@"
+
+
+######## Enclave Objects ########
+
+enclave/enclave_t.c: $(SGX_EDGER8R) enclave/enclave.edl
+	@cd enclave && $(SGX_EDGER8R) --trusted ../enclave/enclave.edl --search-path ../enclave --search-path $(SGX_SDK)/include
+	@echo "GEN  =>  $@"
+
+enclave/enclave_t.o: enclave/enclave_t.c
+	@$(CC) $(Enclave_C_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+enclave/%.o: enclave/%.cpp
+	@$(CXX) $(Enclave_Cpp_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+$(Enclave_Name): enclave/enclave_t.o $(Enclave_Cpp_Objects)
+	@$(CXX) $^ -o $@ $(Enclave_Link_Flags)
+	@echo "LINK =>  $@"
+
+$(Signed_Enclave_Name): $(Enclave_Name)
+	@$(SGX_ENCLAVE_SIGNER) sign -key enclave/enclave_private.pem -enclave $(Enclave_Name) -out $@ -config $(Enclave_Config_File)
+	@echo "SIGN =>  $@"
+
+.PHONY: clean
+
+clean:
+	@rm -f $(App_Name) $(Enclave_Name) $(Signed_Enclave_Name) $(App_Cpp_Objects) app/enclave_u.* $(Enclave_Cpp_Objects) enclave/enclave_t.*

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/app/app.cpp

@@ -0,0 +1,225 @@
+#include "enclave_u.h"
+#include "sgx_urts.h"
+
+#include <cstring>
+#include <fstream>
+#include <getopt.h>
+
+#include "app.h"
+#include "utils.h"
+#include "wallet.h"
+#include "enclave.h"
+
+using namespace std;
+
+
+// OCALLs implementation
+int ocall_save_wallet(const uint8_t* sealed_data, const size_t sealed_size) {
+    ofstream file(WALLET_FILE, ios::out | ios::binary);
+    if (file.fail()) {return 1;}
+    file.write((const char*) sealed_data, sealed_size);
+    file.close();
+    return 0;
+}
+
+int ocall_load_wallet(uint8_t* sealed_data, const size_t sealed_size) {
+    ifstream file(WALLET_FILE, ios::in | ios::binary);
+    if (file.fail()) {return 1;}
+    file.read((char*) sealed_data, sealed_size);
+    file.close();
+    return 0;
+}
+
+int ocall_is_wallet(void) {
+    ifstream file(WALLET_FILE, ios::in | ios::binary);
+    if (file.fail()) {return 0;} // failure means no wallet found
+    file.close();
+    return 1;
+}
+
+int main(int argc, char** argv) {
+
+    sgx_enclave_id_t eid = 0;
+    sgx_launch_token_t token = {0};
+    int updated, ret;
+    sgx_status_t ecall_status, enclave_status;
+
+    enclave_status = sgx_create_enclave(ENCLAVE_FILE, SGX_DEBUG_FLAG, &token, &updated, &eid, NULL);
+    if(enclave_status != SGX_SUCCESS) {
+        error_print("Fail to initialize enclave."); 
+        return -1;
+    }
+    info_print("Enclave successfully initilised.");
+
+    const char* options = "hvn:p:c:sax:y:z:r:";
+    opterr=0; // prevent 'getopt' from printing err messages
+    char err_message[100];
+    int opt, stop=0;
+    int h_flag=0, v_flag=0, s_flag=0, a_flag=0;
+    char * n_value=NULL, *p_value=NULL, *c_value=NULL, *x_value=NULL, *y_value=NULL, *z_value=NULL, *r_value=NULL;
+  
+    // read user input
+    while ((opt = getopt(argc, argv, options)) != -1) {
+        switch (opt) {
+            // help
+            case 'h':
+                h_flag = 1;
+                break;
+
+            // create new wallet
+            case 'n':
+                n_value = optarg;
+                break;
+
+            // master-password
+            case 'p':
+                p_value = optarg;
+                break;
+
+            // change master-password
+            case 'c':
+                c_value = optarg;
+                break;
+
+            // show wallet
+            case 's':
+                s_flag = 1;
+                break;
+
+            // add item
+            case 'a': // add item flag
+                a_flag = 1;
+                break;
+            case 'x': // item's title
+                x_value = optarg;
+                break;
+            case 'y': // item's username
+                y_value = optarg;
+                break;
+            case 'z': // item's password
+                z_value = optarg;
+                break;
+
+            // remove item
+            case 'r':
+                r_value = optarg;
+                break;
+
+            // exceptions
+            case '?':
+                if (optopt == 'n' || optopt == 'p' || optopt == 'c' || optopt == 'r' ||
+                    optopt == 'x' || optopt == 'y' || optopt == 'z'
+                ) {
+                    sprintf(err_message, "Option -%c requires an argument.", optopt);
+                }
+                else if (isprint(optopt)) {
+                    sprintf(err_message, "Unknown option `-%c'.", optopt);
+                }
+                else {
+                    sprintf(err_message, "Unknown option character `\\x%x'.",optopt);
+                }
+                stop = 1;
+                error_print(err_message);
+                error_print("Program exiting.");
+                break;
+
+            default:
+                error_print("Unknown option.");
+        }
+    }
+
+    // perform actions
+    if (stop != 1) {
+        // show help
+        if (h_flag) {
+            show_help();
+        }
+
+        // create new wallet
+        else if(n_value!=NULL) {
+            ecall_status = ecall_create_wallet(eid, &ret, n_value);
+            if (ecall_status != SGX_SUCCESS || is_error(ret)) {
+                error_print("Fail to create new wallet.");
+            }
+            else {
+                info_print("Wallet successfully created.");
+            }
+        }
+
+        // change master-password
+        else if (p_value!=NULL && c_value!=NULL) {
+            ecall_status = ecall_change_master_password(eid, &ret, p_value, c_value);
+            if (ecall_status != SGX_SUCCESS || is_error(ret)) {
+                error_print("Fail change master-password.");
+            }
+            else {
+                info_print("Master-password successfully changed.");
+            }
+        }
+
+        // show wallet
+        else if(p_value!=NULL && s_flag) {
+            wallet_t* wallet = (wallet_t*)malloc(sizeof(wallet_t));
+            ecall_status = ecall_show_wallet(eid, &ret, p_value, wallet, sizeof(wallet_t));
+            if (ecall_status != SGX_SUCCESS || is_error(ret)) {
+                error_print("Fail to retrieve wallet.");
+            }
+            else {
+                info_print("Wallet successfully retrieved.");
+                print_wallet(wallet);
+            }
+            free(wallet);
+        }
+
+        // add item
+        else if (p_value!=NULL && a_flag && x_value!=NULL && y_value!=NULL && z_value!=NULL) {
+            item_t* new_item = (item_t*)malloc(sizeof(item_t));
+            strcpy(new_item->title, x_value); 
+            strcpy(new_item->username, y_value); 
+            strcpy(new_item->password, z_value);
+            ecall_status = ecall_add_item(eid, &ret, p_value, new_item, sizeof(item_t));
+            if (ecall_status != SGX_SUCCESS || is_error(ret)) {
+                error_print("Fail to add new item to wallet.");
+            }
+            else {
+                info_print("Item successfully added to the wallet.");
+            }
+            free(new_item);
+        }
+
+        // remove item
+        else if (p_value!=NULL && r_value!=NULL) {
+            char* p_end;
+            int index = (int)strtol(r_value, &p_end, 10);
+            if (r_value == p_end) {
+                error_print("Option -r requires an integer argument.");
+            }
+            else {
+                ecall_status = ecall_remove_item(eid, &ret, p_value, index);
+                if (ecall_status != SGX_SUCCESS || is_error(ret)) {
+                    error_print("Fail to remove item.");
+                }
+                else {
+                    info_print("Item successfully removed from the wallet.");
+                }
+            }
+        }
+
+        // display help
+        else {
+            error_print("Wrong inputs.");
+            show_help();
+        }
+    }
+    
+    // destroy enclave
+    enclave_status = sgx_destroy_enclave(eid);
+    if(enclave_status != SGX_SUCCESS) {
+        error_print("Fail to destroy enclave."); 
+        return -1;
+    }
+    info_print("Enclave successfully destroyed.");
+
+    info_print("Program exit success.");
+    return 0;
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/app/app.h

@@ -0,0 +1,13 @@
+#ifndef APP_H_
+#define APP_H_
+
+
+/***************************************************
+ * config.
+ ***************************************************/
+#define APP_NAME "sgx-wallet"
+#define ENCLAVE_FILE "enclave.signed.so"
+#define WALLET_FILE "wallet.seal"
+
+
+#endif // APP_H_

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/app/utils.cpp

@@ -0,0 +1,101 @@
+#include <stdio.h>
+#include <cstring>
+
+#include "utils.h"
+#include "app.h"
+#include "wallet.h"
+#include "enclave.h"
+
+void info_print(const char* str) {
+    printf("[INFO] %s\n", str);
+}
+
+void warning_print(const char* str) {
+    printf("[WARNING] %s\n", str);
+}
+
+void error_print(const char* str) {
+    printf("[ERROR] %s\n", str);
+}
+
+void print_wallet(const wallet_t* wallet) {
+    printf("\n-----------------------------------------\n\n");
+    printf("Simple password wallet based on Intel SGX.\n\n");
+    printf("Number of items: %lu\n\n", wallet->size);
+    for (int i = 0; i < wallet->size; ++i) {
+        printf("#%d -- %s\n", i, wallet->items[i].title);
+        printf("[username:] %s\n", wallet->items[i].username);
+        printf("[password:] %s\n", wallet->items[i].password);
+        printf("\n");
+    }
+    printf("\n------------------------------------------\n\n");
+}
+
+int is_error(int error_code) {
+    char err_message[100];
+
+    // check error case
+    switch(error_code) {
+        case RET_SUCCESS:
+            return 0;
+
+        case ERR_PASSWORD_OUT_OF_RANGE:
+            sprintf(err_message, "Password should be at least 8 characters long and at most %d.", MAX_ITEM_SIZE);
+            break;
+
+        case ERR_WALLET_ALREADY_EXISTS:
+            sprintf(err_message, "Wallet already exists: delete file '%s' first.", WALLET_FILE);
+            break;
+
+        case ERR_CANNOT_SAVE_WALLET:
+            strcpy(err_message, "Coud not save wallet.");
+            break;
+
+        case ERR_CANNOT_LOAD_WALLET:
+            strcpy(err_message, "Coud not load wallet.");
+            break;
+
+        case ERR_WRONG_MASTER_PASSWORD:
+            strcpy(err_message, "Wrong master password."); 
+            break;
+
+        case ERR_WALLET_FULL:
+            sprintf(err_message, "Wallet full (maximum number of item: %d).", MAX_ITEMS);
+            break;
+
+        case ERR_ITEM_DOES_NOT_EXIST: 
+            strcpy(err_message, "Item does not exist."); 
+            break;
+
+        case ERR_ITEM_TOO_LONG:
+            sprintf(err_message, "Item too longth (maximum size: %d).", MAX_ITEM_SIZE); 
+            break;
+
+        case ERR_FAIL_SEAL:
+            sprintf(err_message, "Fail to seal wallet."); 
+            break;
+
+        case ERR_FAIL_UNSEAL:
+            sprintf(err_message, "Fail to unseal wallet."); 
+            break;
+
+        default:
+            sprintf(err_message, "Unknown error."); 
+    }
+
+    // print error message
+    error_print(err_message);
+    return 1;
+}
+
+void show_help() {
+	const char* command = "[-h Show this screen] [-v Show version] [-s Show wallet] " \
+		"[-n master-password] [-p master-password -c new-master-password]" \
+		"[-p master-password -a -x items_title -y items_username -z toitems_password]" \
+		"[-p master-password -r items_index]";
+	printf("\nusage: %s %s\n\n", APP_NAME, command);
+}
+
+
+
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/app/utils.h

@@ -0,0 +1,21 @@
+#ifndef UTIL_H_
+#define UTIL_H_
+
+#include "wallet.h"
+
+void info_print(const char* str);
+
+void warning_print(const char* str);
+
+void error_print(const char* str);
+
+void print_wallet(const wallet_t* wallet);
+
+int is_error(int error_code);
+
+void show_help();
+
+void show_version();
+
+
+#endif // UTIL_H_

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/enclave/enclave.config.xml

@@ -0,0 +1,12 @@
+<!-- Please refer to User's Guide for the explanation of each field -->
+<EnclaveConfiguration>
+  <ProdID>0</ProdID>
+  <ISVSVN>0</ISVSVN>
+  <StackMaxSize>0x40000</StackMaxSize>
+  <HeapMaxSize>0x100000</HeapMaxSize>
+  <TCSNum>10</TCSNum>
+  <TCSPolicy>1</TCSPolicy>
+  <DisableDebug>0</DisableDebug>
+  <MiscSelect>0</MiscSelect>
+  <MiscMask>0xFFFFFFFF</MiscMask>
+</EnclaveConfiguration>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/enclave/enclave.cpp

@@ -0,0 +1,403 @@
+#include "enclave_t.h"
+#include "string.h"
+
+#include "enclave.h"
+#include "wallet.h"
+
+#include "sgx_tseal.h"
+#include "sealing/sealing.h"
+
+int ecall_create_wallet(const char* master_password) {
+
+	//
+	// OVERVIEW: 
+	//	1. check password policy
+	//	2. [ocall] abort if wallet already exist
+	//	3. create wallet 
+	//	4. seal wallet
+	//	5. [ocall] save wallet
+	//	6. exit enclave
+	//
+	//
+	sgx_status_t ocall_status, sealing_status;
+	int ocall_ret;
+
+
+	// 1. check passaword policy
+	if (strlen(master_password) < 8 || strlen(master_password)+1 > MAX_ITEM_SIZE) {
+		return ERR_PASSWORD_OUT_OF_RANGE;
+	}
+
+
+	// 2. abort if wallet already exist
+	ocall_status = ocall_is_wallet(&ocall_ret);
+	if (ocall_ret != 0) {
+		return ERR_WALLET_ALREADY_EXISTS;
+	}
+
+
+	// 3. create new wallet
+	wallet_t* wallet = (wallet_t*)malloc(sizeof(wallet_t));
+	wallet->size = 0;
+	strncpy(wallet->master_password, master_password, strlen(master_password)+1); 
+
+
+	// 4. seal wallet
+	size_t sealed_size = sizeof(sgx_sealed_data_t) + sizeof(wallet_t);
+	uint8_t* sealed_data = (uint8_t*)malloc(sealed_size);
+    sealing_status = seal_wallet(wallet, (sgx_sealed_data_t*)sealed_data, sealed_size);
+    free(wallet);
+    if (sealing_status != SGX_SUCCESS) {
+		free(sealed_data);
+		return ERR_FAIL_SEAL;
+    }
+    
+
+	// 5. save wallet
+	ocall_status = ocall_save_wallet(&ocall_ret, sealed_data, sealed_size); 
+	free(sealed_data);
+	if (ocall_ret != 0 || ocall_status != SGX_SUCCESS) {
+		return ERR_CANNOT_SAVE_WALLET;
+	}
+
+
+	// 6. exit enclave
+	return RET_SUCCESS;
+}
+
+
+/**
+ * @brief      Provides the wallet content. The sizes/length of 
+ *             pointers need to be specified, otherwise SGX will
+ *             assume a count of 1 for all pointers.
+ *
+ */
+int ecall_show_wallet(const char* master_password, wallet_t* wallet, size_t wallet_size) {
+
+	//
+	// OVERVIEW: 
+	//	1. [ocall] load wallet
+	// 	2. unseal wallet
+	//	3. verify master-password
+	//	4. return wallet to app
+	//	5. exit enclave
+	//
+	//
+	sgx_status_t ocall_status, sealing_status;
+	int ocall_ret;
+
+
+
+	// 1. load wallet
+	size_t sealed_size = sizeof(sgx_sealed_data_t) + sizeof(wallet_t);
+	uint8_t* sealed_data = (uint8_t*)malloc(sealed_size);
+	ocall_status = ocall_load_wallet(&ocall_ret, sealed_data, sealed_size);
+	if (ocall_ret != 0 || ocall_status != SGX_SUCCESS) {
+		free(sealed_data);
+		return ERR_CANNOT_LOAD_WALLET;
+	}
+
+
+	// 2. unseal loaded wallet
+	uint32_t plaintext_size = sizeof(wallet_t);
+    wallet_t* unsealed_wallet = (wallet_t*)malloc(plaintext_size);
+    sealing_status = unseal_wallet((sgx_sealed_data_t*)sealed_data, unsealed_wallet, plaintext_size);
+    free(sealed_data);
+    if (sealing_status != SGX_SUCCESS) {
+		free(unsealed_wallet);
+		return ERR_FAIL_UNSEAL;
+    }
+    
+    
+	// 3. verify master-password
+	if (strcmp(unsealed_wallet->master_password, master_password) != 0) {
+		free(unsealed_wallet);
+		return ERR_WRONG_MASTER_PASSWORD;
+	}
+
+
+	// 4. return wallet to app
+	(* wallet) = *unsealed_wallet;
+	free(unsealed_wallet);
+
+
+	// 5. exit enclave
+	return RET_SUCCESS;
+}
+
+
+/**
+ * @brief      Changes the wallet's master-password.
+ *
+ */
+int ecall_change_master_password(const char* old_password, const char* new_password) {
+
+	//
+	// OVERVIEW: 
+	//	1. check password policy
+	//	2. [ocall] load wallet
+	// 	3. unseal wallet
+	//	4. verify old password
+	//	5. update password
+	//	6. seal wallet
+	// 	7. [ocall] save sealed wallet
+	//	8. exit enclave
+	//
+	//
+	sgx_status_t ocall_status, sealing_status;
+	int ocall_ret;
+
+
+
+	// 1. check passaword policy
+	if (strlen(new_password) < 8 || strlen(new_password)+1 > MAX_ITEM_SIZE) {
+		return ERR_PASSWORD_OUT_OF_RANGE;
+	}
+
+
+	// 2. load wallet
+	size_t sealed_size = sizeof(sgx_sealed_data_t) + sizeof(wallet_t);
+	uint8_t* sealed_data = (uint8_t*)malloc(sealed_size);
+	ocall_status = ocall_load_wallet(&ocall_ret, sealed_data, sealed_size);
+	if (ocall_ret != 0 || ocall_status != SGX_SUCCESS) {
+		free(sealed_data);
+		return ERR_CANNOT_LOAD_WALLET;
+	}
+
+
+	// 3. unseal wallet
+	uint32_t plaintext_size = sizeof(wallet_t);
+    wallet_t* wallet = (wallet_t*)malloc(plaintext_size);
+    sealing_status = unseal_wallet((sgx_sealed_data_t*)sealed_data, wallet, plaintext_size);
+    free(sealed_data);
+    if (sealing_status != SGX_SUCCESS) {
+    	free(wallet);
+		return ERR_FAIL_UNSEAL;
+    }
+
+
+	// 4. verify master-password
+	if (strcmp(wallet->master_password, old_password) != 0) {
+		free(wallet);
+		return ERR_WRONG_MASTER_PASSWORD;
+	}
+
+
+	// 5. update password
+	strncpy(wallet->master_password, new_password, strlen(new_password)+1); 
+
+
+	// 6. seal wallet
+	sealed_data = (uint8_t*)malloc(sealed_size);
+    sealing_status = seal_wallet(wallet, (sgx_sealed_data_t*)sealed_data, sealed_size);
+    free(wallet);
+    if (sealing_status != SGX_SUCCESS) {
+    	free(wallet);
+		free(sealed_data);
+		return ERR_FAIL_SEAL;
+    }
+
+
+	// 7. save wallet
+	ocall_status = ocall_save_wallet(&ocall_ret, sealed_data, sealed_size); 
+	free(sealed_data); 
+	if (ocall_ret != 0 || ocall_status != SGX_SUCCESS) {
+		return ERR_CANNOT_SAVE_WALLET;
+	}
+
+
+	// 6. exit enclave
+	return RET_SUCCESS;
+}
+
+
+/**
+ * @brief      Adds an item to the wallet. The sizes/length of 
+ *             pointers need to be specified, otherwise SGX will
+ *             assume a count of 1 for all pointers.
+ *
+ */
+int ecall_add_item(const char* master_password, const item_t* item, const size_t item_size) {
+
+	//
+	// OVERVIEW: 
+	//	1. [ocall] load wallet
+	//	2. unseal wallet
+	//	3. verify master-password
+	//	4. check input length
+	//	5. add item to the wallet
+	//	6. seal wallet
+	//	7. [ocall] save sealed wallet
+	//	8. exit enclave
+	//
+	//
+	sgx_status_t ocall_status, sealing_status;
+	int ocall_ret;
+
+
+
+	// 2. load wallet
+	size_t sealed_size = sizeof(sgx_sealed_data_t) + sizeof(wallet_t);
+	uint8_t* sealed_data = (uint8_t*)malloc(sealed_size);
+	ocall_status = ocall_load_wallet(&ocall_ret, sealed_data, sealed_size);
+	if (ocall_ret != 0 || ocall_status != SGX_SUCCESS) {
+		free(sealed_data);
+		return ERR_CANNOT_LOAD_WALLET;
+	}
+
+
+	// 3. unseal wallet
+	uint32_t plaintext_size = sizeof(wallet_t);
+    wallet_t* wallet = (wallet_t*)malloc(plaintext_size);
+    sealing_status = unseal_wallet((sgx_sealed_data_t*)sealed_data, wallet, plaintext_size);
+    free(sealed_data);
+    if (sealing_status != SGX_SUCCESS) {
+    	free(wallet);
+		return ERR_FAIL_UNSEAL;
+    }
+
+
+	// 3. verify master-password
+	if (strcmp(wallet->master_password, master_password) != 0) {
+		free(wallet);
+		return ERR_WRONG_MASTER_PASSWORD;
+	}
+
+
+	// 4. check input length
+	if (strlen(item->title)+1 > MAX_ITEM_SIZE ||
+		strlen(item->username)+1 > MAX_ITEM_SIZE ||
+		strlen(item->password)+1 > MAX_ITEM_SIZE
+	) {
+		free(wallet);
+		return ERR_ITEM_TOO_LONG; 
+    }
+
+
+	// 5. add item to the wallet
+	size_t wallet_size = wallet->size;
+	if (wallet_size >= MAX_ITEMS) {
+		free(wallet);
+		return ERR_WALLET_FULL;
+	}
+	wallet->items[wallet_size] = *item;
+	++wallet->size;
+
+
+	// 6. seal wallet
+	sealed_data = (uint8_t*)malloc(sealed_size);
+    sealing_status = seal_wallet(wallet, (sgx_sealed_data_t*)sealed_data, sealed_size);
+    free(wallet);
+    if (sealing_status != SGX_SUCCESS) {
+    	free(wallet);
+		free(sealed_data);
+		return ERR_FAIL_SEAL;
+    }
+
+
+	// 7. save wallet
+	ocall_status = ocall_save_wallet(&ocall_ret, sealed_data, sealed_size);  
+	free(sealed_data);
+	if (ocall_ret != 0 || ocall_status != SGX_SUCCESS) {
+		return ERR_CANNOT_SAVE_WALLET;
+	}
+
+
+	// 8. exit enclave
+	return RET_SUCCESS;
+}
+
+
+/**
+ * @brief      Removes an item from the wallet. The sizes/length of 
+ *             pointers need to be specified, otherwise SGX will
+ *             assume a count of 1 for all pointers.
+ *
+ */
+int ecall_remove_item(const char* master_password, const int index) {
+
+	//
+	// OVERVIEW: 
+	//	1. check index bounds
+	//	2. [ocall] load wallet
+	//	3. unseal wallet
+	//	4. verify master-password
+	//	5. remove item from the wallet
+	//	6. seal wallet
+	//	7. [ocall] save sealed wallet
+	//	8. exit enclave
+	//
+	//
+	sgx_status_t ocall_status, sealing_status;
+	int ocall_ret;
+
+
+
+	// 1. check index bounds
+	if (index < 0 || index >= MAX_ITEMS) {
+		return ERR_ITEM_DOES_NOT_EXIST;
+	}
+
+
+	// 2. load wallet
+	size_t sealed_size = sizeof(sgx_sealed_data_t) + sizeof(wallet_t);
+	uint8_t* sealed_data = (uint8_t*)malloc(sealed_size);
+	ocall_status = ocall_load_wallet(&ocall_ret, sealed_data, sealed_size);
+	if (ocall_ret != 0 || ocall_status != SGX_SUCCESS) {
+		free(sealed_data);
+		return ERR_CANNOT_LOAD_WALLET;
+	}
+
+
+	// 3. unseal wallet
+	uint32_t plaintext_size = sizeof(wallet_t);
+    wallet_t* wallet = (wallet_t*)malloc(plaintext_size);
+    sealing_status = unseal_wallet((sgx_sealed_data_t*)sealed_data, wallet, plaintext_size);
+    free(sealed_data);
+    if (sealing_status != SGX_SUCCESS) {
+    	free(wallet);
+		return ERR_FAIL_UNSEAL;
+    }
+
+
+	// 4. verify master-password
+	if (strcmp(wallet->master_password, master_password) != 0) {
+		free(wallet);
+		return ERR_WRONG_MASTER_PASSWORD;
+	}
+
+
+	// 5. remove item from the wallet
+	size_t wallet_size = wallet->size;
+	if (index >= wallet_size) {
+		free(wallet);
+		return ERR_ITEM_DOES_NOT_EXIST;
+	}
+	for (int i = index; i < wallet_size-1; ++i) {
+		wallet->items[i] = wallet->items[i+1];
+	}
+	--wallet->size;
+
+
+	// 6. seal wallet
+	sealed_data = (uint8_t*)malloc(sealed_size);
+    sealing_status = seal_wallet(wallet, (sgx_sealed_data_t*)sealed_data, sealed_size);
+    free(wallet);
+    if (sealing_status != SGX_SUCCESS) {
+		free(sealed_data);
+		return ERR_FAIL_SEAL;
+    }
+
+
+	// 7. save wallet
+	ocall_status = ocall_save_wallet(&ocall_ret, sealed_data, sealed_size);  
+	free(sealed_data);
+	if (ocall_ret != 0 || ocall_status != SGX_SUCCESS) {
+		return ERR_CANNOT_SAVE_WALLET;
+	}
+
+
+	// 8. exit enclave
+	return RET_SUCCESS;
+}
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/enclave/enclave.edl

@@ -0,0 +1,53 @@
+enclave {
+
+    // includes
+    include "wallet.h"
+
+
+    // define ECALLs
+    trusted {
+
+        public int ecall_create_wallet(
+            [in, string]const char* master_password
+        );
+
+        public int ecall_show_wallet(
+            [in, string]const char* master_password, 
+            [out, size=wallet_size] wallet_t* wallet,
+            size_t wallet_size
+        );
+
+        public int ecall_change_master_password(
+            [in, string]const char* old_password, 
+            [in, string]const char* new_password
+        );
+
+        public int ecall_add_item(
+            [in, string]const char* master_password, 
+            [in, size=item_size]const item_t* item,
+            size_t item_size
+        );
+
+        public int ecall_remove_item(
+            [in, string]const char* master_password, 
+            int index
+        );
+    };
+
+
+    // define OCALLs
+    untrusted {
+    
+        int ocall_save_wallet(
+            [in, size=sealed_size]const uint8_t* sealed_data, 
+            size_t sealed_size
+        );
+
+        int ocall_load_wallet(
+            [out, size=sealed_size]uint8_t* sealed_data, 
+            size_t sealed_size
+        );
+
+        int ocall_is_wallet(void);
+    };
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/enclave/enclave_private.pem

@@ -0,0 +1,39 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/enclave/sealing/sealing.cpp

@@ -0,0 +1,15 @@
+#include "enclave_t.h"
+#include "sgx_trts.h"
+#include "sgx_tseal.h"
+
+#include "wallet.h"
+#include "sealing.h"
+
+sgx_status_t seal_wallet(const wallet_t* wallet, sgx_sealed_data_t* sealed_data, size_t sealed_size) {
+    return sgx_seal_data(0, NULL, sizeof(wallet_t), (uint8_t*)wallet, sealed_size, sealed_data);
+}
+
+sgx_status_t unseal_wallet(const sgx_sealed_data_t* sealed_data, wallet_t* plaintext, uint32_t plaintext_size) {
+    return sgx_unseal_data(sealed_data, NULL, NULL, (uint8_t*)plaintext, &plaintext_size);
+}
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/enclave/sealing/sealing.h

@@ -0,0 +1,16 @@
+#ifndef SEALING_H_
+#define SEALING_H_
+
+#include "sgx_trts.h"
+#include "sgx_tseal.h"
+
+#include "wallet.h"
+
+sgx_status_t seal_wallet(const wallet_t* plaintext, sgx_sealed_data_t* sealed_data, size_t sealed_size);
+
+sgx_status_t unseal_wallet(const sgx_sealed_data_t* sealed_data, wallet_t* plaintext, uint32_t plaintext_size);
+
+
+#endif // SEALING_H_
+
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/include/enclave.h

@@ -0,0 +1,21 @@
+#ifndef ENCLAVE_H_
+#define ENCLAVE_H_
+
+
+/***************************************************
+ * Enclave return codes
+ ***************************************************/
+#define RET_SUCCESS 0
+#define ERR_PASSWORD_OUT_OF_RANGE 1
+#define ERR_WALLET_ALREADY_EXISTS 2
+#define ERR_CANNOT_SAVE_WALLET 3
+#define ERR_CANNOT_LOAD_WALLET 4
+#define ERR_WRONG_MASTER_PASSWORD 5
+#define ERR_WALLET_FULL 6
+#define ERR_ITEM_DOES_NOT_EXIST 7
+#define ERR_ITEM_TOO_LONG 8
+#define ERR_FAIL_SEAL 9
+#define ERR_FAIL_UNSEAL 10
+
+
+#endif // ENCLAVE_H_

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/PasswordWallet/include/wallet.h

@@ -0,0 +1,25 @@
+#ifndef WALLET_H_
+#define WALLET_H_
+
+#define MAX_ITEMS 100
+#define MAX_ITEM_SIZE 100
+
+// item
+struct Item {
+	char  title[MAX_ITEM_SIZE];
+	char  username[MAX_ITEM_SIZE];
+	char  password[MAX_ITEM_SIZE];
+};
+typedef struct Item item_t;
+
+// wallet
+struct Wallet {
+	item_t items[MAX_ITEMS];
+	size_t size;
+	char master_password[MAX_ITEM_SIZE];
+};
+typedef struct Wallet wallet_t;
+
+
+
+#endif // WALLET_H_

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/.cproject

@@ -0,0 +1,216 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?fileVersion 4.0.0?><cproject storage_type_id="org.eclipse.cdt.core.XmlProjectDescriptionStorage">
+	<storageModule moduleId="org.eclipse.cdt.core.settings">
+		<cconfiguration id="com.intel.sgx.configuration.Sim.Debug">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.intel.sgx.configuration.Sim.Debug" moduleId="org.eclipse.cdt.core.settings" name="Intel(R) SGX Simulation Debug">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.autotools.core.ErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildProperties="" description="" id="com.intel.sgx.configuration.Sim.Debug" name="Intel(R) SGX Simulation Debug" parent="com.intel.sgx.configuration.Sim.Debug">
+					<folderInfo id="com.intel.sgx.configuration.Sim.Debug.935873960" name="/" resourcePath="">
+						<toolChain id="com.intel.sgx.toolChain.Sim.Debug.2132595457" name="Intel(R) SGX" superClass="com.intel.sgx.toolChain.Sim.Debug">
+							<targetPlatform binaryParser="org.eclipse.cdt.core.ELF" id="com.intel.sgx.targetEnclave.1678491512" isAbstract="false" superClass="com.intel.sgx.targetEnclave"/>
+							<builder arguments="SGX_DEBUG=1 SGX_MODE=SIM -f Makefile" command="make" id="com.intel.sgx.builder2.229166714" keepEnvironmentInBuildfile="false" name="Intel(R) Software Guard Extensions Linux Builder" superClass="com.intel.sgx.builder2"/>
+							<tool id="com.intel.sgx.compiler.81269967" name="Intel(R) SGX" superClass="com.intel.sgx.compiler">
+								<option id="com.intel.sgx.option.includePath.1694375039" superClass="com.intel.sgx.option.includePath" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${SGX_SDK}/include&quot;"/>
+								</option>
+								<inputType id="com.intel.sgx.inputType.742388855" superClass="com.intel.sgx.inputType"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+		<cconfiguration id="com.intel.sgx.configuration.Sim.Release">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.intel.sgx.configuration.Sim.Release" moduleId="org.eclipse.cdt.core.settings" name="Intel(R) SGX Simulation">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.autotools.core.ErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildProperties="" description="" id="com.intel.sgx.configuration.Sim.Release" name="Intel(R) SGX Simulation" parent="com.intel.sgx.configuration.Sim.Release">
+					<folderInfo id="com.intel.sgx.configuration.Sim.Release.428839196" name="/" resourcePath="">
+						<toolChain id="com.intel.sgx.toolChain.Sim.Release.709775329" name="Intel(R) SGX" superClass="com.intel.sgx.toolChain.Sim.Release">
+							<targetPlatform binaryParser="org.eclipse.cdt.core.ELF" id="com.intel.sgx.targetEnclave.1866379479" isAbstract="false" superClass="com.intel.sgx.targetEnclave"/>
+							<builder arguments="SGX_DEBUG=0 SGX_MODE=SIM -f Makefile" command="make" id="com.intel.sgx.builder3.1000705250" keepEnvironmentInBuildfile="false" name="Intel(R) Software Guard Extensions Linux Builder" superClass="com.intel.sgx.builder3"/>
+							<tool id="com.intel.sgx.compiler.301453474" name="Intel(R) SGX" superClass="com.intel.sgx.compiler">
+								<option id="com.intel.sgx.option.includePath.1312096753" superClass="com.intel.sgx.option.includePath" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${SGX_SDK}/include&quot;"/>
+								</option>
+								<inputType id="com.intel.sgx.inputType.596141238" superClass="com.intel.sgx.inputType"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+		<cconfiguration id="com.intel.sgx.configuration.HW.Debug">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.intel.sgx.configuration.HW.Debug" moduleId="org.eclipse.cdt.core.settings" name="Intel(R) SGX Hardware Debug">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.autotools.core.ErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildProperties="" description="" id="com.intel.sgx.configuration.HW.Debug" name="Intel(R) SGX Hardware Debug" parent="com.intel.sgx.configuration.HW.Debug">
+					<folderInfo id="com.intel.sgx.configuration.HW.Debug.562917509" name="/" resourcePath="">
+						<toolChain id="com.intel.sgx.toolChain.HW.Debug.2046051538" name="Intel(R) SGX" superClass="com.intel.sgx.toolChain.HW.Debug">
+							<targetPlatform binaryParser="org.eclipse.cdt.core.ELF" id="com.intel.sgx.targetEnclave.999277922" isAbstract="false" superClass="com.intel.sgx.targetEnclave"/>
+							<builder arguments="SGX_DEBUG=1 SGX_MODE=HW -f Makefile" command="make" id="com.intel.sgx.builder1.577701014" keepEnvironmentInBuildfile="false" name="Intel(R) Software Guard Extensions Linux Builder" superClass="com.intel.sgx.builder1"/>
+							<tool id="com.intel.sgx.compiler.1898704176" name="Intel(R) SGX" superClass="com.intel.sgx.compiler">
+								<option id="com.intel.sgx.option.includePath.1026657138" superClass="com.intel.sgx.option.includePath" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${SGX_SDK}/include&quot;"/>
+								</option>
+								<inputType id="com.intel.sgx.inputType.393162412" superClass="com.intel.sgx.inputType"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+		<cconfiguration id="com.intel.sgx.configuration.HW.Prerelease">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.intel.sgx.configuration.HW.Prerelease" moduleId="org.eclipse.cdt.core.settings" name="Intel(R) SGX Hardware Prerelease">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.autotools.core.ErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildProperties="" description="" id="com.intel.sgx.configuration.HW.Prerelease" name="Intel(R) SGX Hardware Prerelease" parent="com.intel.sgx.configuration.HW.Prerelease">
+					<folderInfo id="com.intel.sgx.configuration.HW.Prerelease.2074448686" name="/" resourcePath="">
+						<toolChain id="com.intel.sgx.toolChain.HW.Prerelease.2016152654" name="Intel(R) SGX" superClass="com.intel.sgx.toolChain.HW.Prerelease">
+							<targetPlatform binaryParser="org.eclipse.cdt.core.ELF" id="com.intel.sgx.targetEnclave.1520324017" isAbstract="false" superClass="com.intel.sgx.targetEnclave"/>
+							<builder arguments="SGX_PRERELEASE=1 SGX_MODE=HW -f Makefile" command="make" id="com.intel.sgx.builder5.293910513" keepEnvironmentInBuildfile="false" name="Intel(R) Software Guard Extensions Linux Builder" superClass="com.intel.sgx.builder5"/>
+							<tool id="com.intel.sgx.compiler.845441552" name="Intel(R) SGX" superClass="com.intel.sgx.compiler">
+								<option id="com.intel.sgx.option.includePath.199398937" superClass="com.intel.sgx.option.includePath" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${SGX_SDK}/include&quot;"/>
+								</option>
+								<inputType id="com.intel.sgx.inputType.1555926498" superClass="com.intel.sgx.inputType"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+		<cconfiguration id="com.intel.sgx.configuration.HW.Release">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.intel.sgx.configuration.HW.Release" moduleId="org.eclipse.cdt.core.settings" name="Intel(R) SGX Hardware Release">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.autotools.core.ErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildProperties="" description="" id="com.intel.sgx.configuration.HW.Release" name="Intel(R) SGX Hardware Release" parent="com.intel.sgx.configuration.HW.Release">
+					<folderInfo id="com.intel.sgx.configuration.HW.Release.1347223665" name="/" resourcePath="">
+						<toolChain id="com.intel.sgx.toolChain.HW.Release.1050674831" name="Intel(R) SGX" superClass="com.intel.sgx.toolChain.HW.Release">
+							<targetPlatform binaryParser="org.eclipse.cdt.core.ELF" id="com.intel.sgx.targetEnclave.987781695" isAbstract="false" superClass="com.intel.sgx.targetEnclave"/>
+							<builder arguments="SGX_DEBUG=0 SGX_MODE=HW -f Makefile" command="make" id="com.intel.sgx.builder6.484951388" keepEnvironmentInBuildfile="false" name="Intel(R) Software Guard Extensions Linux Builder" superClass="com.intel.sgx.builder6"/>
+							<tool id="com.intel.sgx.compiler.945246695" name="Intel(R) SGX" superClass="com.intel.sgx.compiler">
+								<option id="com.intel.sgx.option.includePath.119487102" superClass="com.intel.sgx.option.includePath" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${SGX_SDK}/include&quot;"/>
+								</option>
+								<inputType id="com.intel.sgx.inputType.593431891" superClass="com.intel.sgx.inputType"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+	</storageModule>
+	<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+		<project id="LocalAttestation.cdt.managedbuild.target.gnu.exe.872917958" name="Executable" projectType="cdt.managedbuild.target.gnu.exe"/>
+	</storageModule>
+	<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
+	<storageModule moduleId="refreshScope" versionNumber="2">
+		<configuration configurationName="Intel(R) SGX Hardware Debug">
+			<resource resourceType="PROJECT" workspacePath="/LocalAttestation"/>
+		</configuration>
+		<configuration configurationName="Intel(R) SGX Simulation Debug">
+			<resource resourceType="PROJECT" workspacePath="/LocalAttestation"/>
+		</configuration>
+		<configuration configurationName="Intel(R) SGX Hardware Prerelease">
+			<resource resourceType="PROJECT" workspacePath="/LocalAttestation"/>
+		</configuration>
+		<configuration configurationName="Intel(R) SGX Simulation">
+			<resource resourceType="PROJECT" workspacePath="/LocalAttestation"/>
+		</configuration>
+		<configuration configurationName="Intel(R) SGX Hardware Release">
+			<resource resourceType="PROJECT" workspacePath="/LocalAttestation"/>
+		</configuration>
+	</storageModule>
+	<storageModule moduleId="scannerConfiguration">
+		<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+		<scannerConfigBuildInfo instanceId="com.intel.sgx.configuration.HW.Release;com.intel.sgx.configuration.HW.Release.1347223665;com.intel.sgx.compiler.945246695;com.intel.sgx.inputType.593431891">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="com.intel.sgx.SGXPerProjectProfile"/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="com.intel.sgx.configuration.Sim.Debug;com.intel.sgx.configuration.Sim.Debug.935873960;com.intel.sgx.compiler.81269967;com.intel.sgx.inputType.742388855">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="com.intel.sgx.SGXPerProjectProfile"/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="com.intel.sgx.configuration.Sim.Release;com.intel.sgx.configuration.Sim.Release.428839196;com.intel.sgx.compiler.301453474;com.intel.sgx.inputType.596141238">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="com.intel.sgx.SGXPerProjectProfile"/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.exe.debug.1609650460;cdt.managedbuild.config.gnu.exe.debug.1609650460.;cdt.managedbuild.tool.gnu.c.compiler.exe.debug.1644119147;cdt.managedbuild.tool.gnu.c.compiler.input.938348551">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.exe.release.1394873887;cdt.managedbuild.config.gnu.exe.release.1394873887.;cdt.managedbuild.tool.gnu.c.compiler.exe.release.2035356548;cdt.managedbuild.tool.gnu.c.compiler.input.793813290">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="com.intel.sgx.configuration.HW.Debug;com.intel.sgx.configuration.HW.Debug.562917509;com.intel.sgx.compiler.1898704176;com.intel.sgx.inputType.393162412">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="com.intel.sgx.SGXPerProjectProfile"/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="com.intel.sgx.configuration.HW.Prerelease;com.intel.sgx.configuration.HW.Prerelease.2074448686;com.intel.sgx.compiler.845441552;com.intel.sgx.inputType.1555926498">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="com.intel.sgx.SGXPerProjectProfile"/>
+		</scannerConfigBuildInfo>
+	</storageModule>
+	<storageModule moduleId="org.eclipse.cdt.internal.ui.text.commentOwnerProjectMappings"/>
+</cproject>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/.project

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>LocalAttestation</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
+			<triggers>clean,full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
+			<triggers>full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.cdt.core.cnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+		<nature>org.eclipse.cdt.core.ccnature</nature>
+		<nature>com.intel.sgx.sgxnature</nature>
+	</natures>
+</projectDescription>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/.settings/language.settings.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<project>
+	<configuration id="com.intel.sgx.configuration.Sim.Debug" name="Intel(R) SGX Simulation Debug">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
+				<resource project-relative-path="">
+					<entry kind="includePath" name="${SGX_SDK}/include">
+						<flag value="LOCAL"/>
+					</entry>
+				</resource>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetector" ref="shared-provider"/>
+		</extension>
+	</configuration>
+	<configuration id="com.intel.sgx.configuration.Sim.Release" name="Intel(R) SGX Simulation">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
+				<resource project-relative-path="">
+					<entry kind="includePath" name="${SGX_SDK}/include">
+						<flag value="LOCAL"/>
+					</entry>
+				</resource>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetector" ref="shared-provider"/>
+		</extension>
+	</configuration>
+	<configuration id="com.intel.sgx.configuration.HW.Debug" name="Intel(R) SGX Hardware Debug">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
+				<resource project-relative-path="">
+					<entry kind="includePath" name="${SGX_SDK}/include">
+						<flag value="LOCAL"/>
+					</entry>
+				</resource>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetector" ref="shared-provider"/>
+		</extension>
+	</configuration>
+	<configuration id="com.intel.sgx.configuration.HW.Prerelease" name="Intel(R) SGX Hardware Prerelease">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
+				<resource project-relative-path="">
+					<entry kind="includePath" name="${SGX_SDK}/include">
+						<flag value="LOCAL"/>
+					</entry>
+				</resource>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetector" ref="shared-provider"/>
+		</extension>
+	</configuration>
+	<configuration id="com.intel.sgx.configuration.HW.Release" name="Intel(R) SGX Hardware Release">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
+				<resource project-relative-path="">
+					<entry kind="includePath" name="${SGX_SDK}/include">
+						<flag value="LOCAL"/>
+					</entry>
+				</resource>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetector" ref="shared-provider"/>
+		</extension>
+	</configuration>
+</project>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/App/App.cpp

@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+// App.cpp : Defines the entry point for the console application.
+#include <stdio.h>
+#include <map>
+#include "../Enclave1/Enclave1_u.h"
+#include "../Enclave2/Enclave2_u.h"
+#include "../Enclave3/Enclave3_u.h"
+#include "sgx_eid.h"
+#include "sgx_urts.h"
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
+
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <unistd.h>
+
+#define UNUSED(val) (void)(val)
+#define TCHAR   char
+#define _TCHAR  char
+#define _T(str) str
+#define scanf_s scanf
+#define _tmain  main
+
+extern std::map<sgx_enclave_id_t, uint32_t>g_enclave_id_map;
+
+
+sgx_enclave_id_t e1_enclave_id = 0;
+sgx_enclave_id_t e2_enclave_id = 0;
+sgx_enclave_id_t e3_enclave_id = 0;
+
+#define ENCLAVE1_PATH "libenclave1.so"
+#define ENCLAVE2_PATH "libenclave2.so"
+#define ENCLAVE3_PATH "libenclave3.so"
+
+void waitForKeyPress()
+{
+    char ch;
+    int temp;
+    printf("\n\nHit a key....\n");
+    temp = scanf_s("%c", &ch);
+}
+
+uint32_t load_enclaves()
+{
+    uint32_t enclave_temp_no;
+    int ret, launch_token_updated;
+    sgx_launch_token_t launch_token;
+
+    enclave_temp_no = 0;
+
+    ret = sgx_create_enclave(ENCLAVE1_PATH, SGX_DEBUG_FLAG, &launch_token, &launch_token_updated, &e1_enclave_id, NULL);
+    if (ret != SGX_SUCCESS) {
+                return ret;
+    }
+
+    enclave_temp_no++;
+    g_enclave_id_map.insert(std::pair<sgx_enclave_id_t, uint32_t>(e1_enclave_id, enclave_temp_no));
+
+    return SGX_SUCCESS;
+}
+
+int _tmain(int argc, _TCHAR* argv[])
+{
+    uint32_t ret_status;
+    sgx_status_t status;
+
+    UNUSED(argc);
+    UNUSED(argv);
+
+    if(load_enclaves() != SGX_SUCCESS)
+    {
+        printf("\nLoad Enclave Failure");
+    }
+
+    //printf("\nAvailable Enclaves");
+    //printf("\nEnclave1 - EnclaveID %" PRIx64 "\n", e1_enclave_id);
+
+    // shared memory
+    key_t key = ftok("../..", 1);
+    int shmid = shmget(key, 1024, 0666|IPC_CREAT);
+    char *str = (char*)shmat(shmid, (void*)0, 0);
+    printf("[TEST IPC] Sending to Enclave2: Hello from Enclave1\n");
+    strncpy(str, "Hello from Enclave1\n", 20);
+    shmdt(str);
+
+    do
+    {
+        printf("[START] Testing create session between Enclave1 (Initiator) and Enclave2 (Responder)\n");
+        status = Enclave1_test_create_session(e1_enclave_id, &ret_status, e1_enclave_id, 0);
+        status = SGX_SUCCESS;
+        if (status!=SGX_SUCCESS)
+        {
+            printf("[END] test_create_session Ecall failed: Error code is %x\n", status);
+            break;
+        }
+        else
+        {
+            if(ret_status==0)
+            {
+                printf("[END] Secure Channel Establishment between Initiator (E1) and Responder (E2) Enclaves successful !!!\n");
+            }
+            else
+            {
+                printf("[END] Session establishment and key exchange failure between Initiator (E1) and Responder (E2): Error code is %x\n", ret_status);
+                break;
+            }
+        }
+
+#pragma warning (push)
+#pragma warning (disable : 4127)
+    }while(0);
+#pragma warning (pop)
+
+    sgx_destroy_enclave(e1_enclave_id);
+
+    waitForKeyPress();
+
+    return 0;
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave1/Enclave1.config.xml

@@ -0,0 +1,12 @@
+<EnclaveConfiguration> 
+  <ProdID>0</ProdID> 
+  <ISVSVN>0</ISVSVN> 
+  <StackMaxSize>0x40000</StackMaxSize> 
+  <HeapMaxSize>0x100000</HeapMaxSize> 
+  <TCSNum>1</TCSNum> 
+  <TCSPolicy>1</TCSPolicy> 
+  <!-- Recommend changing 'DisableDebug' to 1 to make the enclave undebuggable for enclave release -->
+  <DisableDebug>0</DisableDebug> 
+  <MiscSelect>0</MiscSelect>
+  <MiscMask>0xFFFFFFFF</MiscMask>
+</EnclaveConfiguration>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave1/Enclave1.cpp

@@ -0,0 +1,367 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+// Enclave1.cpp : Defines the exported functions for the .so application
+#include "sgx_eid.h"
+#include "Enclave1_t.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E1.h"
+#include "sgx_thread.h"
+#include "sgx_dh.h"
+#include <map>
+
+#define UNUSED(val) (void)(val)
+
+std::map<sgx_enclave_id_t, dh_session_t>g_src_session_info_map;
+
+static uint32_t e1_foo1_wrapper(ms_in_msg_exchange_t *ms, size_t param_lenth, char** resp_buffer, size_t* resp_length);
+
+//Function pointer table containing the list of functions that the enclave exposes
+const struct {
+    size_t num_funcs;
+    const void* table[1];
+} func_table = {
+    1,
+    {
+        (const void*)e1_foo1_wrapper,
+    }
+};
+
+//Makes use of the sample code function to establish a secure channel with the destination enclave (Test Vector)
+uint32_t test_create_session(sgx_enclave_id_t src_enclave_id,
+                         sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    dh_session_t dest_session_info;
+
+    //Core reference code function for creating a session
+    ke_status = create_session(src_enclave_id, dest_enclave_id, &dest_session_info);
+
+    return ke_status;
+}
+
+//Makes use of the sample code function to do an enclave to enclave call (Test Vector)
+uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id,
+                                          sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    uint32_t var1,var2;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* retval;
+
+    var1 = 0x4;
+    var2 = 0x5;
+    target_fn_id = 0;
+    msg_type = ENCLAVE_TO_ENCLAVE_CALL;
+    max_out_buff_size = 50;
+
+    //Marshals the input parameters for calling function foo1 in Enclave2 into a input buffer
+    ke_status = marshal_input_parameters_e2_foo1(target_fn_id, msg_type, var1, var2, &marshalled_inp_buff, &marshalled_inp_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+
+    //Search the map for the session information associated with the destination enclave id of Enclave2 passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+          dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info, marshalled_inp_buff,
+                                            marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+
+
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    //Un-marshal the return value and output parameters from foo1 of Enclave 2
+    ke_status = unmarshal_retval_and_output_parameters_e2_foo1(out_buff, &retval);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(retval);
+    return SUCCESS;
+}
+
+//Makes use of the sample code function to do a generic secret message exchange (Test Vector)
+uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id,
+                               sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* secret_response;
+    uint32_t secret_data;
+
+    target_fn_id = 0;
+    msg_type = MESSAGE_EXCHANGE;
+    max_out_buff_size = 50;
+    secret_data = 0x12345678; //Secret Data here is shown only for purpose of demonstration.
+
+    //Marshals the secret data into a buffer
+    ke_status = marshal_message_exchange_request(target_fn_id, msg_type, secret_data, &marshalled_inp_buff, &marshalled_inp_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+         dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info, marshalled_inp_buff,
+                                                marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    //Un-marshal the secret response data
+    ke_status = umarshal_message_exchange_response(out_buff, &secret_response);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(secret_response);
+    return SUCCESS;
+}
+
+
+//Makes use of the sample code function to close a current session
+uint32_t test_close_session(sgx_enclave_id_t src_enclave_id,
+                                sgx_enclave_id_t dest_enclave_id)
+{
+    dh_session_t dest_session_info;
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+        dest_session_info = it->second;
+    }
+    else
+    {
+        return NULL;
+    }
+
+    //Core reference code function for closing a session
+    ke_status = close_session(src_enclave_id, dest_enclave_id);
+
+    //Erase the session information associated with the destination enclave id
+    g_src_session_info_map.erase(dest_enclave_id);
+    return ke_status;
+}
+
+//Function that is used to verify the trust of the other enclave
+//Each enclave can have its own way verifying the peer enclave identity
+extern "C" uint32_t verify_peer_enclave_trust(sgx_dh_session_enclave_identity_t* peer_enclave_identity)
+{
+    if(!peer_enclave_identity)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    if(peer_enclave_identity->isv_prod_id != 0 || !(peer_enclave_identity->attributes.flags & SGX_FLAGS_INITTED))
+        // || peer_enclave_identity->attributes.xfrm !=3)// || peer_enclave_identity->mr_signer != xx //TODO: To be hardcoded with values to check
+    {
+        return ENCLAVE_TRUST_ERROR;
+    }
+    else
+    {
+        return SUCCESS;
+    }
+}
+
+
+//Dispatcher function that calls the approriate enclave function based on the function id
+//Each enclave can have its own way of dispatching the calls from other enclave
+extern "C" uint32_t enclave_to_enclave_call_dispatcher(char* decrypted_data,
+                                                       size_t decrypted_data_length,
+                                                       char** resp_buffer,
+                                                       size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t (*fn1)(ms_in_msg_exchange_t *ms, size_t, char**, size_t*);
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+    if(ms->target_fn_id >= func_table.num_funcs)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    fn1 = (uint32_t (*)(ms_in_msg_exchange_t*, size_t, char**, size_t*))func_table.table[ms->target_fn_id];
+    return fn1(ms, decrypted_data_length, resp_buffer, resp_length);
+}
+
+//Operates on the input secret and generates the output secret
+uint32_t get_message_exchange_response(uint32_t inp_secret_data)
+{
+    uint32_t secret_response;
+
+    //User should use more complex encryption method to protect their secret, below is just a simple example
+    secret_response = inp_secret_data & 0x11111111;
+
+    return secret_response;
+
+}
+
+//Generates the response from the request message
+extern "C" uint32_t message_exchange_response_generator(char* decrypted_data,
+                                              char** resp_buffer,
+                                              size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t inp_secret_data;
+    uint32_t out_secret_data;
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+
+    if(umarshal_message_exchange_request(&inp_secret_data,ms) != SUCCESS)
+        return ATTESTATION_ERROR;
+
+    out_secret_data = get_message_exchange_response(inp_secret_data);
+
+    if(marshal_message_exchange_response(resp_buffer, resp_length, out_secret_data) != SUCCESS)
+        return MALLOC_ERROR;
+
+    return SUCCESS;
+
+}
+
+
+static uint32_t e1_foo1(external_param_struct_t *p_struct_var)
+{
+    if(!p_struct_var)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    (p_struct_var->var1)++;
+    (p_struct_var->var2)++;
+    (p_struct_var->p_internal_struct->ivar1)++;
+    (p_struct_var->p_internal_struct->ivar2)++;
+
+    return (p_struct_var->var1 + p_struct_var->var2 + p_struct_var->p_internal_struct->ivar1 + p_struct_var->p_internal_struct->ivar2);
+}
+
+//Function which is executed on request from the source enclave
+static uint32_t e1_foo1_wrapper(ms_in_msg_exchange_t *ms,
+                    size_t param_lenth,
+                    char** resp_buffer,
+                    size_t* resp_length)
+{
+    UNUSED(param_lenth);
+
+    uint32_t ret;
+    size_t len_data, len_ptr_data;
+    external_param_struct_t *p_struct_var;
+    internal_param_struct_t internal_struct_var;
+
+    if(!ms || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    p_struct_var = (external_param_struct_t*)malloc(sizeof(external_param_struct_t));
+    if(!p_struct_var)
+        return MALLOC_ERROR;
+
+    p_struct_var->p_internal_struct = &internal_struct_var;
+
+    if(unmarshal_input_parameters_e1_foo1(p_struct_var, ms) != SUCCESS)//can use the stack
+    {
+        SAFE_FREE(p_struct_var);
+        return ATTESTATION_ERROR;
+    }
+
+    ret = e1_foo1(p_struct_var);
+
+    len_data = sizeof(external_param_struct_t) - sizeof(p_struct_var->p_internal_struct);
+    len_ptr_data = sizeof(internal_struct_var);
+
+    if(marshal_retval_and_output_parameters_e1_foo1(resp_buffer, resp_length, ret, p_struct_var, len_data, len_ptr_data) != SUCCESS)
+    {
+        SAFE_FREE(p_struct_var);
+        return MALLOC_ERROR;
+    }
+    SAFE_FREE(p_struct_var);
+    return SUCCESS;
+}
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave1/Enclave1.edl

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+enclave {
+    include "sgx_eid.h"
+    from "../LocalAttestationCode/LocalAttestationCode.edl" import *;
+    from "sgx_tstdc.edl" import *;
+    trusted{
+            public uint32_t test_create_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_close_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+    };
+
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave1/Enclave1.lds

@@ -0,0 +1,10 @@
+Enclave1.so
+{
+    global:
+        g_global_data_sim;
+        g_global_data;
+        enclave_entry;
+        g_peak_heap_used;
+    local:
+        *;
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave1/Enclave1_private.pem

@@ -0,0 +1,39 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIG4wIBAAKCAYEAuJh4w/KzndQhzEqwH6Ut/3BmOom5CN117KT1/cemEbDLPhn0
+c5yjAfe4NL1qtGqz0RTK9X9BBSi89b6BrsM9S6c2cUJaeYAPrAtJ+IuzN/5BAmmf
+RXbPccETd7rHvDdQ9KBRjCipTx+H0D5nOB76S5PZPVrduwrCmSqVFmLNVWWfPYQx
+YewbJ2QfEfioICZFYR0Jou38mJqDTl+CH0gLAuQ4n1kdpQ3VGymzt3oUiPzf5ImJ
+oZh5HjarRRiWV+cyNyXYJTnx0dOtFQDgd8HhniagbRB0ZOIt6599JjMkWGkVP0Ni
+U/NIlXG5musU35GfLB8MbTcxblMNm9sMYz1R8y/eAreoPTXUhtK8NG2TEywRh3UP
+RF9/jM9WczjQXxJ3RznKOwNVwg4cRY2AOqD2vb1iGSqyc/WMzVULgfclkcScp75/
+Auz9Y6473CQvaxyrseSWHGwCG7KG1GxYE8Bg8T6OlYD4mzKggoMdwVLAzUepRaPZ
+5hqRDZzbTGUxJ+GLAgEDAoIBgHsQUIKhzRPiwTLcdWpuHqpK7tGxJgXo+Uht+VPa
+brZ13NQRTaJobKv6es3TnHhHIotjMfj/gK4bKKPUVnSCKN0aJEuBkaZVX8gHhqWy
+d3qpgKxGai5PNPaAt6UnL9LPi03ANl1wcN9qWorURNAUpt0NO348k9IHLGYcY2RB
+3jjuaikCy5adZ2+YFLalxWrELkC+BmyeqGW8V4mVAWowB1dC0Go7aRiz42dxInpR
+YwX96phbsRZlphQkci4QZDqaIFg3ndzTO5bo704zaMcbWtEjmFrYRyb519tRoDkN
+Y0rGwOxFANeRV5dSfGGLm7K5JztiuHN0nMu3PhY4LOV0SeZ4+5sYn0LzB2nyKqgy
+/c3AA2OG34DEdGxxh94kD66iKFVPyJG38/gnu9CsGmrLl3n4fgutPEVIbPdSSjex
+4Y9EQfcnqImPxTrpP9CqD208VPcQHD/uy8s9q3961Ew3RPdHMZ8amIJdXkOmPEme
+KZ7SG+VENBaj8r038iq1mPzcWwKBwQDcvJg75LfVuKX+cWMrTO2+MFVcEFiZ/NB/
+gh7mgL6lCleROVa9P6iR2Wn6vHq8nP5BkChehm/rXEG78fgXEMoArimF7FrrICfI
+4yB0opDJz/tWrE/62impN7OR8Ce+RQThFj4RTnibQEEVt++JMUXFiMKLdWDSpC2i
+tNWnlTOb7d89bk0yk62IoLElCZK/MIMxkCHBKW6YgrmvlPJKQwpA6Z3wQbUpE6Rb
+9f8xJfxZGEJPH0s3Ds9A0CVuEt8OOXcCgcEA1hXTHhhgmb2gIUJgIcvrpkDmiLux
+EG6ZoyLt6h5QwzScS6KKU1mcoJyVDd0wlt7mEXrPYYHWUWPuvpTQ8/4ZGMw7FCZe
+bakhnwRbw36FlLwRG35wCF6nQO1XFBKRGto15ivfTyDvMpJBdtNpET5NwT/ifDF3
+OWS7t6TGhtcfnvBad5S1AgGoAq+q/huFiBGpDbxJ+1xh0lNL5Z8nVypvPWomNpde
+rpLuwRPEIb+GBfQ9Hp5AjRXVsPjKnkHsnl2NAoHBAJMoZX1DJTklw/72Qhzd89Qg
+OOgK5bv94FUBae8Afxixj7YmOdN/xbaQ8VHS/H29/tZgGumu9UeS1n1L+roLMVXJ
+cQPy50dqxTCXavhsYIaKp48diqc8G8YlImFKxSmDWJYO1AuJpbzVgLklSlt2LoOw
+gbJOQIxtc8HN48UOImfz6ij0M3cNHlsVy24GYdTLAiEKwStw9GWse8pjTDGCBtXx
+E/WBI3C3wuf5VMtuqDtlgYoU3M9fNNXgGPQMlLQmTwKBwQCOuTdpZZW708AWLEAW
+h/Ju1e8F0nYK9GZswfPxaYsszb2HwbGM5mhrEw4JPiBklJlg/IpBATmLl/R/DeCi
+qWYQiCdixD7zxhZqAufXqa5jKAtnqaAFlG+AnjoNYbYR5s6ZcpTfa0ohttZPN5tg
+1DPWKpb9dk97mH0lGIRZ5L+/Sub6YyNWq8VXH8dUElkFYRtefYankuvhjN1Dv2+P
+cZ9+RsQkZOnJt0nWDS1r1QQD+Ci/FCsIuTkgpdxpgUhpk7MCgcEAkfkmaBDb7DG2
+Kc39R6ZZuPnV10w+WOpph7ugwcguG/E0wGq+jFWv6HFckCPeHT4BNtOk8Dem/kPp
+teF51eAuFWEefj2tScvlSBBPcnla+WzMWXrlxVnajTt73w+oT2Ql//WhgREpsNfx
+SvU80YPVu4GJfl+hhxBifLx+0FM20OESW93qFRc3p040bNrDY9JIZuly/y5zaiBa
+mRZF9H8P+x3Lu5AJpdXQEOMZ/XJ/xkoWWjbTojkmgOmmZSMLd5Te
+-----END RSA PRIVATE KEY-----

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave1/Utility_E1.cpp

@@ -0,0 +1,222 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "sgx_eid.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E1.h"
+#include "stdlib.h"
+#include "string.h"
+
+uint32_t marshal_input_parameters_e2_foo1(uint32_t target_fn_id, uint32_t msg_type, uint32_t var1, uint32_t var2, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t param_len, ms_len;
+    char *temp_buff;
+        
+    param_len = sizeof(var1)+sizeof(var2);
+    temp_buff = (char*)malloc(param_len);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+
+    memcpy(temp_buff,&var1,sizeof(var1));
+    memcpy(temp_buff+sizeof(var1),&var2,sizeof(var2));
+    ms_len = sizeof(ms_in_msg_exchange_t) + param_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)param_len;
+    memcpy(&ms->inparam_buff, temp_buff, param_len);
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t unmarshal_retval_and_output_parameters_e2_foo1(char* out_buff, char** retval)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff)
+        return INVALID_PARAMETER_ERROR;
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *retval = (char*)malloc(retval_len);
+    if(!*retval)
+        return MALLOC_ERROR;
+
+    memcpy(*retval, ms->ret_outparam_buff, retval_len);
+    return SUCCESS;
+}
+
+uint32_t unmarshal_input_parameters_e1_foo1(external_param_struct_t *pstruct, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!pstruct || !ms)
+        return INVALID_PARAMETER_ERROR;
+
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+    if(len != (sizeof(pstruct->var1)+sizeof(pstruct->var2)+sizeof(pstruct->p_internal_struct->ivar1)+sizeof(pstruct->p_internal_struct->ivar2)))
+        return ATTESTATION_ERROR;
+
+    memcpy(&pstruct->var1, buff, sizeof(pstruct->var1));
+    memcpy(&pstruct->var2, buff + sizeof(pstruct->var1), sizeof(pstruct->var2));
+    memcpy(&pstruct->p_internal_struct->ivar1, buff+(sizeof(pstruct->var1)+sizeof(pstruct->var2)), sizeof(pstruct->p_internal_struct->ivar1)); 
+    memcpy(&pstruct->p_internal_struct->ivar2, buff+(sizeof(pstruct->var1)+sizeof(pstruct->var2)+sizeof(pstruct->p_internal_struct->ivar1)), sizeof(pstruct->p_internal_struct->ivar2));
+
+    return SUCCESS;
+}
+
+uint32_t marshal_retval_and_output_parameters_e1_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval, external_param_struct_t *p_struct_var, size_t len_data, size_t len_ptr_data)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t param_len, ms_len, ret_param_len;;
+    char *temp_buff;
+    int* addr;
+    char* struct_data;
+    size_t retval_len;
+    
+    if(!resp_length || !p_struct_var)
+        return INVALID_PARAMETER_ERROR;
+
+    retval_len = sizeof(retval);
+    struct_data = (char*)p_struct_var;    
+    param_len = len_data + len_ptr_data;
+    ret_param_len = param_len + retval_len;
+    addr = *(int **)(struct_data + len_data);
+    temp_buff = (char*)malloc(ret_param_len);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+
+    memcpy(temp_buff, &retval, sizeof(retval)); 
+    memcpy(temp_buff + sizeof(retval), struct_data, len_data);
+    memcpy(temp_buff + sizeof(retval) + len_data, addr, len_ptr_data);
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, temp_buff, ret_param_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+    
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t secret_data_len, ms_len;
+    if(!marshalled_buff_len)
+        return INVALID_PARAMETER_ERROR;
+    secret_data_len = sizeof(secret_data);
+    ms_len = sizeof(ms_in_msg_exchange_t) + secret_data_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)secret_data_len;
+    memcpy(&ms->inparam_buff, &secret_data, secret_data_len);
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+     return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!inp_secret_data || !ms)
+        return INVALID_PARAMETER_ERROR;
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+    if(len != sizeof(uint32_t))
+        return ATTESTATION_ERROR;
+
+    memcpy(inp_secret_data, buff, sizeof(uint32_t));    
+
+    return SUCCESS;
+}
+
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t secret_response_len, ms_len;
+    size_t retval_len, ret_param_len;
+    if(!resp_length)
+        return INVALID_PARAMETER_ERROR;
+    secret_response_len = sizeof(secret_response);
+    retval_len = secret_response_len;
+    ret_param_len = secret_response_len;
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, &secret_response, secret_response_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+    return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff)
+        return INVALID_PARAMETER_ERROR;
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *secret_response = (char*)malloc(retval_len);
+    if(!*secret_response)
+    {
+        return MALLOC_ERROR;
+    }
+    memcpy(*secret_response, ms->ret_outparam_buff, retval_len);
+    return SUCCESS;
+}
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave1/Utility_E1.h

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef UTILITY_E1_H__
+#define UTILITY_E1_H__
+
+#include "stdint.h"
+
+typedef struct _internal_param_struct_t
+{
+    uint32_t ivar1;
+    uint32_t ivar2;
+}internal_param_struct_t;
+
+typedef struct _external_param_struct_t
+{
+    uint32_t var1;
+    uint32_t var2;
+    internal_param_struct_t *p_internal_struct;
+}external_param_struct_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint32_t marshal_input_parameters_e2_foo1(uint32_t target_fn_id, uint32_t msg_type, uint32_t var1, uint32_t var2, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t unmarshal_retval_and_output_parameters_e2_foo1(char* out_buff, char** retval);
+uint32_t unmarshal_input_parameters_e1_foo1(external_param_struct_t *pstruct, ms_in_msg_exchange_t* ms);
+uint32_t marshal_retval_and_output_parameters_e1_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval, external_param_struct_t *p_struct_var, size_t len_data, size_t len_ptr_data);
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms);
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response);
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response);
+#ifdef __cplusplus
+ }
+#endif
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave2/Enclave2.config.xml

@@ -0,0 +1,12 @@
+<EnclaveConfiguration> 
+  <ProdID>0</ProdID> 
+  <ISVSVN>0</ISVSVN> 
+  <StackMaxSize>0x40000</StackMaxSize> 
+  <HeapMaxSize>0x100000</HeapMaxSize> 
+  <TCSNum>1</TCSNum> 
+  <TCSPolicy>1</TCSPolicy>
+  <!-- Recommend changing 'DisableDebug' to 1 to make the enclave undebuggable for enclave release -->
+  <DisableDebug>0</DisableDebug>
+  <MiscSelect>0</MiscSelect>
+  <MiscMask>0xFFFFFFFF</MiscMask>
+</EnclaveConfiguration>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave2/Enclave2.cpp

@@ -0,0 +1,339 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+// Enclave2.cpp : Defines the exported functions for the DLL application
+#include "sgx_eid.h"
+#include "Enclave2_t.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E2.h"
+#include "sgx_thread.h"
+#include "sgx_dh.h"
+#include <map>
+
+#define UNUSED(val) (void)(val)
+
+std::map<sgx_enclave_id_t, dh_session_t>g_src_session_info_map;
+
+static uint32_t e2_foo1_wrapper(ms_in_msg_exchange_t *ms, size_t param_lenth, char** resp_buffer, size_t* resp_length);
+
+//Function pointer table containing the list of functions that the enclave exposes
+const struct {
+    size_t num_funcs;
+    const void* table[1];
+} func_table = {
+    1,
+    {
+        (const void*)e2_foo1_wrapper,
+    }
+};
+
+//Makes use of the sample code function to establish a secure channel with the destination enclave
+uint32_t test_create_session(sgx_enclave_id_t src_enclave_id,
+                          sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    dh_session_t dest_session_info;
+    //Core reference code function for creating a session
+    ke_status = create_session(src_enclave_id, dest_enclave_id,&dest_session_info);
+    if(ke_status == SUCCESS)
+    {
+        //Insert the session information into the map under the corresponding destination enclave id
+        g_src_session_info_map.insert(std::pair<sgx_enclave_id_t, dh_session_t>(dest_enclave_id, dest_session_info));
+    }
+    memset(&dest_session_info, 0, sizeof(dh_session_t));
+    return ke_status;
+}
+
+//Makes use of the sample code function to do an enclave to enclave call (Test Vector)
+uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id,
+                                          sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    param_struct_t *p_struct_var, struct_var;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* retval;
+
+    max_out_buff_size = 50;
+    target_fn_id = 0;
+    msg_type = ENCLAVE_TO_ENCLAVE_CALL;
+
+    struct_var.var1 = 0x3;
+    struct_var.var2 = 0x4;
+    p_struct_var = &struct_var;
+
+    //Marshals the input parameters for calling function foo1 in Enclave3 into a input buffer
+    ke_status = marshal_input_parameters_e3_foo1(target_fn_id, msg_type, p_struct_var, &marshalled_inp_buff, &marshalled_inp_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+         dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info, marshalled_inp_buff,
+                                               marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    //Un-marshal the return value and output parameters from foo1 of Enclave3
+    ke_status = unmarshal_retval_and_output_parameters_e3_foo1(out_buff, p_struct_var, &retval);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(retval);
+    return SUCCESS;
+}
+
+//Makes use of the sample code function to do a generic secret message exchange (Test Vector)
+uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id,
+                               sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* secret_response;
+    uint32_t secret_data;
+
+    target_fn_id = 0;
+    msg_type = MESSAGE_EXCHANGE;
+    max_out_buff_size = 50;
+    secret_data = 0x12345678; //Secret Data here is shown only for purpose of demonstration.
+
+    //Marshals the secret data into a buffer
+    ke_status = marshal_message_exchange_request(target_fn_id, msg_type, secret_data, &marshalled_inp_buff, &marshalled_inp_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+           dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info, marshalled_inp_buff,
+                                                marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    //Un-marshal the secret response data
+    ke_status = umarshal_message_exchange_response(out_buff, &secret_response);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(secret_response);
+    return SUCCESS;
+}
+
+
+//Makes use of the sample code function to close a current session
+uint32_t test_close_session(sgx_enclave_id_t src_enclave_id,
+                                sgx_enclave_id_t dest_enclave_id)
+{
+    dh_session_t dest_session_info;
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+         dest_session_info = it->second;
+    }
+    else
+    {
+        return NULL;
+    }
+    //Core reference code function for closing a session
+    ke_status = close_session(src_enclave_id, dest_enclave_id);
+
+    //Erase the session information associated with the destination enclave id
+    g_src_session_info_map.erase(dest_enclave_id);
+    return ke_status;
+}
+
+//Function that is used to verify the trust of the other enclave
+//Each enclave can have its own way verifying the peer enclave identity
+extern "C" uint32_t verify_peer_enclave_trust(sgx_dh_session_enclave_identity_t* peer_enclave_identity)
+{
+    if(!peer_enclave_identity)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    if(peer_enclave_identity->isv_prod_id != 0 || !(peer_enclave_identity->attributes.flags & SGX_FLAGS_INITTED))
+        // || peer_enclave_identity->attributes.xfrm !=3)// || peer_enclave_identity->mr_signer != xx //TODO: To be hardcoded with values to check
+    {
+        return ENCLAVE_TRUST_ERROR;
+    }
+    else
+    {
+        return SUCCESS;
+    }
+}
+
+//Dispatch function that calls the approriate enclave function based on the function id
+//Each enclave can have its own way of dispatching the calls from other enclave
+extern "C" uint32_t enclave_to_enclave_call_dispatcher(char* decrypted_data,
+                                                       size_t decrypted_data_length,
+                                                       char** resp_buffer,
+                                                       size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t (*fn1)(ms_in_msg_exchange_t *ms, size_t, char**, size_t*);
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+    if(ms->target_fn_id >= func_table.num_funcs)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    fn1 = (uint32_t (*)(ms_in_msg_exchange_t*, size_t, char**, size_t*))func_table.table[ms->target_fn_id];
+    return fn1(ms, decrypted_data_length, resp_buffer, resp_length);
+}
+
+//Operates on the input secret and generates the output secret
+uint32_t get_message_exchange_response(uint32_t inp_secret_data)
+{
+    uint32_t secret_response;
+
+    //User should use more complex encryption method to protect their secret, below is just a simple example
+    secret_response = inp_secret_data & 0x11111111;
+
+    return secret_response;
+
+}
+
+//Generates the response from the request message
+extern "C" uint32_t message_exchange_response_generator(char* decrypted_data,
+                                              char** resp_buffer,
+                                               size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t inp_secret_data;
+    uint32_t out_secret_data;
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+
+    if(umarshal_message_exchange_request(&inp_secret_data,ms) != SUCCESS)
+        return ATTESTATION_ERROR;
+
+    out_secret_data = get_message_exchange_response(inp_secret_data);
+
+    if(marshal_message_exchange_response(resp_buffer, resp_length, out_secret_data) != SUCCESS)
+        return MALLOC_ERROR;
+
+    return SUCCESS;
+
+}
+
+static uint32_t e2_foo1(uint32_t var1, uint32_t var2)
+{
+    return(var1 + var2);
+}
+
+//Function which is executed on request from the source enclave
+static uint32_t e2_foo1_wrapper(ms_in_msg_exchange_t *ms,
+                    size_t param_lenth,
+                    char** resp_buffer,
+                    size_t* resp_length)
+{
+    UNUSED(param_lenth);
+
+    uint32_t var1,var2,ret;
+    if(!ms || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    if(unmarshal_input_parameters_e2_foo1(&var1, &var2, ms) != SUCCESS)
+        return ATTESTATION_ERROR;
+
+    ret = e2_foo1(var1, var2);
+
+    if(marshal_retval_and_output_parameters_e2_foo1(resp_buffer, resp_length, ret) != SUCCESS )
+        return MALLOC_ERROR; //can set resp buffer to null here
+
+    return SUCCESS;
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave2/Enclave2.edl

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+enclave {
+    include "sgx_eid.h"
+    from "../LocalAttestationCode/LocalAttestationCode.edl" import *;
+    from "sgx_tstdc.edl" import *;
+    trusted{
+              public uint32_t test_create_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_close_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+    };
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave2/Enclave2.lds

@@ -0,0 +1,10 @@
+Enclave2.so
+{
+    global:
+        g_global_data_sim;
+        g_global_data;
+        enclave_entry;
+        g_peak_heap_used;
+    local:
+        *;
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave2/Enclave2_private.pem

@@ -0,0 +1,39 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave2/Utility_E2.cpp

@@ -0,0 +1,213 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "sgx_eid.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E2.h"
+#include "stdlib.h"
+#include "string.h"
+
+uint32_t marshal_input_parameters_e3_foo1(uint32_t target_fn_id, uint32_t msg_type, param_struct_t *p_struct_var, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t param_len, ms_len;
+    char *temp_buff;
+    if(!p_struct_var || !marshalled_buff_len)
+        return INVALID_PARAMETER_ERROR;    
+    param_len = sizeof(param_struct_t);
+    temp_buff = (char*)malloc(param_len);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+    memcpy(temp_buff, p_struct_var, sizeof(param_struct_t)); //can be optimized
+    ms_len = sizeof(ms_in_msg_exchange_t) + param_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)param_len;
+    memcpy(&ms->inparam_buff, temp_buff, param_len);
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t unmarshal_retval_and_output_parameters_e3_foo1(char* out_buff, param_struct_t *p_struct_var, char** retval)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff)
+        return INVALID_PARAMETER_ERROR;
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *retval = (char*)malloc(retval_len);
+    if(!*retval)
+    {
+        return MALLOC_ERROR;
+    }
+    memcpy(*retval, ms->ret_outparam_buff, retval_len);
+    memcpy(&p_struct_var->var1, (ms->ret_outparam_buff) + retval_len, sizeof(p_struct_var->var1));
+    memcpy(&p_struct_var->var2, (ms->ret_outparam_buff) + retval_len + sizeof(p_struct_var->var1), sizeof(p_struct_var->var2));
+    return SUCCESS;
+}
+
+
+uint32_t unmarshal_input_parameters_e2_foo1(uint32_t* var1, uint32_t* var2, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!var1 || !var2 || !ms)
+        return INVALID_PARAMETER_ERROR;
+
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+
+    if(len != (sizeof(*var1) + sizeof(*var2)))
+        return ATTESTATION_ERROR;
+
+    memcpy(var1, buff, sizeof(*var1));
+    memcpy(var2, buff + sizeof(*var1), sizeof(*var2));
+
+    return SUCCESS;
+}
+
+uint32_t marshal_retval_and_output_parameters_e2_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t ret_param_len, ms_len;
+    char *temp_buff;
+    size_t retval_len;
+    if(!resp_length)
+        return INVALID_PARAMETER_ERROR;
+    retval_len = sizeof(retval);
+    ret_param_len = retval_len; //no out parameters
+    temp_buff = (char*)malloc(ret_param_len);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+
+    memcpy(temp_buff, &retval, sizeof(retval)); 
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, temp_buff, ret_param_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t secret_data_len, ms_len;
+    if(!marshalled_buff_len)
+        return INVALID_PARAMETER_ERROR;    
+    secret_data_len = sizeof(secret_data);
+    ms_len = sizeof(ms_in_msg_exchange_t) + secret_data_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)secret_data_len;
+    memcpy(&ms->inparam_buff, &secret_data, secret_data_len);
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+    return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!inp_secret_data || !ms)
+        return INVALID_PARAMETER_ERROR;    
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+    if(len != sizeof(uint32_t))
+        return ATTESTATION_ERROR;
+
+    memcpy(inp_secret_data, buff, sizeof(uint32_t));
+
+    return SUCCESS;
+}
+
+
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t secret_response_len, ms_len;
+    size_t retval_len, ret_param_len;
+    if(!resp_length)
+        return INVALID_PARAMETER_ERROR;    
+    secret_response_len = sizeof(secret_response);
+    retval_len = secret_response_len;
+    ret_param_len = secret_response_len;
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, &secret_response, secret_response_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+     return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff)
+        return INVALID_PARAMETER_ERROR;    
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *secret_response = (char*)malloc(retval_len);
+    if(!*secret_response)
+    {
+        return MALLOC_ERROR;
+    }
+    memcpy(*secret_response, ms->ret_outparam_buff, retval_len);
+    return SUCCESS;
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave2/Utility_E2.h

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef UTILITY_E2_H__
+#define UTILITY_E2_H__
+#include "stdint.h"
+
+typedef struct _param_struct_t
+{
+    uint32_t var1;
+    uint32_t var2;
+}param_struct_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint32_t marshal_input_parameters_e3_foo1(uint32_t target_fn_id, uint32_t msg_type, param_struct_t *p_struct_var, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t unmarshal_retval_and_output_parameters_e3_foo1(char* out_buff, param_struct_t *p_struct_var, char** retval);
+uint32_t unmarshal_input_parameters_e2_foo1(uint32_t* var1, uint32_t* var2, ms_in_msg_exchange_t* ms);
+uint32_t marshal_retval_and_output_parameters_e2_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval);
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms);
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response);
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response);
+
+#ifdef __cplusplus
+ }
+#endif
+#endif
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave3/Enclave3.config.xml

@@ -0,0 +1,12 @@
+<EnclaveConfiguration> 
+  <ProdID>0</ProdID> 
+  <ISVSVN>0</ISVSVN> 
+  <StackMaxSize>0x40000</StackMaxSize> 
+  <HeapMaxSize>0x100000</HeapMaxSize> 
+  <TCSNum>1</TCSNum> 
+  <TCSPolicy>1</TCSPolicy>
+  <!-- Recommend changing 'DisableDebug' to 1 to make the enclave undebuggable for enclave release -->
+  <DisableDebug>0</DisableDebug> 
+  <MiscSelect>0</MiscSelect>
+  <MiscMask>0xFFFFFFFF</MiscMask>
+</EnclaveConfiguration>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave3/Enclave3.cpp

@@ -0,0 +1,366 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+// Enclave3.cpp : Defines the exported functions for the DLL application
+#include "sgx_eid.h"
+#include "Enclave3_t.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E3.h"
+#include "sgx_thread.h"
+#include "sgx_dh.h"
+#include <map>
+
+#define UNUSED(val) (void)(val)
+
+std::map<sgx_enclave_id_t, dh_session_t>g_src_session_info_map;
+
+static uint32_t e3_foo1_wrapper(ms_in_msg_exchange_t *ms, size_t param_lenth, char** resp_buffer, size_t* resp_length);
+
+//Function pointer table containing the list of functions that the enclave exposes
+const struct {
+    size_t num_funcs;
+    const void* table[1];
+} func_table = {
+    1,
+    {
+        (const void*)e3_foo1_wrapper,
+    }
+};
+
+//Makes use of the sample code function to establish a secure channel with the destination enclave
+uint32_t test_create_session(sgx_enclave_id_t src_enclave_id,
+                          sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    dh_session_t dest_session_info;
+    //Core reference code function for creating a session
+    ke_status = create_session(src_enclave_id, dest_enclave_id,&dest_session_info);
+    if(ke_status == SUCCESS)
+    {
+        //Insert the session information into the map under the corresponding destination enclave id
+        g_src_session_info_map.insert(std::pair<sgx_enclave_id_t, dh_session_t>(dest_enclave_id, dest_session_info));
+    }
+    memset(&dest_session_info, 0, sizeof(dh_session_t));
+    return ke_status;
+}
+
+//Makes use of the sample code function to do an enclave to enclave call (Test Vector)
+uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id,
+                                          sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    external_param_struct_t *p_struct_var, struct_var;
+    internal_param_struct_t internal_struct_var;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* retval;
+
+    max_out_buff_size = 50;
+    msg_type = ENCLAVE_TO_ENCLAVE_CALL;
+    target_fn_id = 0;
+    internal_struct_var.ivar1 = 0x5;
+    internal_struct_var.ivar2 = 0x6;
+    struct_var.var1 = 0x3;
+    struct_var.var2 = 0x4;
+    struct_var.p_internal_struct = &internal_struct_var;
+    p_struct_var = &struct_var;
+
+    size_t len_data = sizeof(struct_var) - sizeof(struct_var.p_internal_struct);
+    size_t len_ptr_data = sizeof(internal_struct_var);
+
+    //Marshals the input parameters for calling function foo1 in Enclave1 into a input buffer
+    ke_status = marshal_input_parameters_e1_foo1(target_fn_id, msg_type, p_struct_var, len_data,
+                                len_ptr_data, &marshalled_inp_buff, &marshalled_inp_buff_len);
+
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+        dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info,
+                  marshalled_inp_buff, marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    ////Un-marshal the return value and output parameters from foo1 of Enclave1
+    ke_status = unmarshal_retval_and_output_parameters_e1_foo1(out_buff, p_struct_var, &retval);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(retval);
+    return SUCCESS;
+}
+
+//Makes use of the sample code function to do a generic secret message exchange (Test Vector)
+uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id,
+                               sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* secret_response;
+    uint32_t secret_data;
+
+    target_fn_id = 0;
+    msg_type = MESSAGE_EXCHANGE;
+    max_out_buff_size = 50;
+    secret_data = 0x12345678; //Secret Data here is shown only for purpose of demonstration.
+
+    //Marshals the parameters into a buffer
+    ke_status = marshal_message_exchange_request(target_fn_id, msg_type, secret_data, &marshalled_inp_buff, &marshalled_inp_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+        dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info, marshalled_inp_buff,
+                                                marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+    //Un-marshal the secret response data
+    ke_status = umarshal_message_exchange_response(out_buff, &secret_response);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(secret_response);
+    return SUCCESS;
+}
+
+
+//Makes use of the sample code function to close a current session
+uint32_t test_close_session(sgx_enclave_id_t src_enclave_id,
+                                sgx_enclave_id_t dest_enclave_id)
+{
+    dh_session_t dest_session_info;
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+        dest_session_info = it->second;
+    }
+    else
+    {
+        return NULL;
+    }
+    //Core reference code function for closing a session
+    ke_status = close_session(src_enclave_id, dest_enclave_id);
+
+    //Erase the session information associated with the destination enclave id
+    g_src_session_info_map.erase(dest_enclave_id);
+    return ke_status;
+}
+
+//Function that is used to verify the trust of the other enclave
+//Each enclave can have its own way verifying the peer enclave identity
+extern "C" uint32_t verify_peer_enclave_trust(sgx_dh_session_enclave_identity_t* peer_enclave_identity)
+{
+    if(!peer_enclave_identity)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    if(peer_enclave_identity->isv_prod_id != 0 || !(peer_enclave_identity->attributes.flags & SGX_FLAGS_INITTED))
+        // || peer_enclave_identity->attributes.xfrm !=3)// || peer_enclave_identity->mr_signer != xx //TODO: To be hardcoded with values to check
+    {
+        return ENCLAVE_TRUST_ERROR;
+    }
+    else
+    {
+        return SUCCESS;
+    }
+}
+
+
+//Dispatch function that calls the approriate enclave function based on the function id
+//Each enclave can have its own way of dispatching the calls from other enclave
+extern "C" uint32_t enclave_to_enclave_call_dispatcher(char* decrypted_data,
+                                                       size_t decrypted_data_length,
+                                                       char** resp_buffer,
+                                                       size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t (*fn1)(ms_in_msg_exchange_t *ms, size_t, char**, size_t*);
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+    if(ms->target_fn_id >= func_table.num_funcs)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    fn1 = (uint32_t (*)(ms_in_msg_exchange_t*, size_t, char**, size_t*))func_table.table[ms->target_fn_id];
+    return fn1(ms, decrypted_data_length, resp_buffer, resp_length);
+}
+
+//Operates on the input secret and generates the output secret
+uint32_t get_message_exchange_response(uint32_t inp_secret_data)
+{
+    uint32_t secret_response;
+
+    //User should use more complex encryption method to protect their secret, below is just a simple example
+    secret_response = inp_secret_data & 0x11111111;
+
+    return secret_response;
+
+}
+//Generates the response from the request message
+extern "C" uint32_t message_exchange_response_generator(char* decrypted_data,
+                                              char** resp_buffer,
+                                              size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t inp_secret_data;
+    uint32_t out_secret_data;
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+
+    if(umarshal_message_exchange_request(&inp_secret_data,ms) != SUCCESS)
+        return ATTESTATION_ERROR;
+
+    out_secret_data = get_message_exchange_response(inp_secret_data);
+
+    if(marshal_message_exchange_response(resp_buffer, resp_length, out_secret_data) != SUCCESS)
+        return MALLOC_ERROR;
+
+    return SUCCESS;
+
+}
+
+
+static uint32_t e3_foo1(param_struct_t *p_struct_var)
+{
+    if(!p_struct_var)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    p_struct_var->var1++;
+    p_struct_var->var2++;
+
+    return(p_struct_var->var1 * p_struct_var->var2);
+}
+
+//Function which is executed on request from the source enclave
+static uint32_t e3_foo1_wrapper(ms_in_msg_exchange_t *ms,
+                    size_t param_lenth,
+                    char** resp_buffer,
+                    size_t* resp_length)
+{
+    UNUSED(param_lenth);
+    
+    uint32_t ret;
+    param_struct_t *p_struct_var;
+    if(!ms || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    p_struct_var = (param_struct_t*)malloc(sizeof(param_struct_t));
+    if(!p_struct_var)
+        return MALLOC_ERROR;
+
+    if(unmarshal_input_parameters_e3_foo1(p_struct_var, ms) != SUCCESS)
+    {
+        SAFE_FREE(p_struct_var);
+        return ATTESTATION_ERROR;
+    }
+
+    ret = e3_foo1(p_struct_var);
+
+    if(marshal_retval_and_output_parameters_e3_foo1(resp_buffer, resp_length, ret, p_struct_var) != SUCCESS)
+    {
+        SAFE_FREE(p_struct_var);
+        return MALLOC_ERROR;
+    }
+    SAFE_FREE(p_struct_var);
+    return SUCCESS;
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave3/Enclave3.edl

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+enclave {
+    include "sgx_eid.h"
+    from "../LocalAttestationCode/LocalAttestationCode.edl" import *;
+    from "sgx_tstdc.edl" import *;
+    trusted{
+        public uint32_t test_create_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+        public uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+        public uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+        public uint32_t test_close_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+    };
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave3/Enclave3.lds

@@ -0,0 +1,10 @@
+Enclave3.so
+{
+    global:
+        g_global_data_sim;
+        g_global_data;
+        enclave_entry;
+        g_peak_heap_used;
+    local:
+        *;
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave3/Enclave3_private.pem

@@ -0,0 +1,39 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave3/Utility_E3.cpp

@@ -0,0 +1,223 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "sgx_eid.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E3.h"
+#include "stdlib.h"
+#include "string.h"
+
+uint32_t marshal_input_parameters_e1_foo1(uint32_t target_fn_id, uint32_t msg_type, external_param_struct_t *p_struct_var, size_t len_data, size_t len_ptr_data, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t param_len, ms_len;
+    char *temp_buff;
+    int* addr;
+    char* struct_data;
+    if(!p_struct_var || !marshalled_buff_len)
+        return INVALID_PARAMETER_ERROR;    
+    struct_data = (char*)p_struct_var;
+    temp_buff = (char*)malloc(len_data + len_ptr_data);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+    memcpy(temp_buff, struct_data, len_data);
+    addr = *(int **)(struct_data + len_data);
+    memcpy(temp_buff + len_data, addr, len_ptr_data); //can be optimized
+    param_len = len_data + len_ptr_data;
+    ms_len =  sizeof(ms_in_msg_exchange_t) + param_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)param_len;
+    memcpy(&ms->inparam_buff, temp_buff, param_len);
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+        
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t marshal_retval_and_output_parameters_e3_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval, param_struct_t *p_struct_var)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t ret_param_len, ms_len;
+    char *temp_buff;
+    size_t retval_len;
+    if(!resp_length || !p_struct_var)
+        return INVALID_PARAMETER_ERROR;    
+    retval_len = sizeof(retval);
+    ret_param_len = sizeof(retval) + sizeof(param_struct_t);
+    temp_buff = (char*)malloc(ret_param_len);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+    memcpy(temp_buff, &retval, sizeof(retval)); 
+    memcpy(temp_buff + sizeof(retval), p_struct_var, sizeof(param_struct_t));
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, temp_buff, ret_param_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t unmarshal_input_parameters_e3_foo1(param_struct_t *pstruct, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!pstruct || !ms)
+        return INVALID_PARAMETER_ERROR;    
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+
+    if(len != (sizeof(pstruct->var1) + sizeof(pstruct->var2)))
+        return ATTESTATION_ERROR;
+
+    memcpy(&pstruct->var1, buff, sizeof(pstruct->var1));
+    memcpy(&pstruct->var2, buff + sizeof(pstruct->var1), sizeof(pstruct->var2)); 
+
+    return SUCCESS;
+}
+
+
+uint32_t unmarshal_retval_and_output_parameters_e1_foo1(char* out_buff, external_param_struct_t *p_struct_var, char** retval)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff || !p_struct_var)
+        return INVALID_PARAMETER_ERROR;    
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *retval = (char*)malloc(retval_len);
+    if(!*retval)
+    {
+        return MALLOC_ERROR;
+    }
+    memcpy(*retval, ms->ret_outparam_buff, retval_len);
+    memcpy(&p_struct_var->var1, (ms->ret_outparam_buff) + retval_len, sizeof(p_struct_var->var1));
+    memcpy(&p_struct_var->var2, (ms->ret_outparam_buff) + retval_len + sizeof(p_struct_var->var1), sizeof(p_struct_var->var2));
+    memcpy(&p_struct_var->p_internal_struct->ivar1, (ms->ret_outparam_buff) + retval_len + sizeof(p_struct_var->var1)+ sizeof(p_struct_var->var2), sizeof(p_struct_var->p_internal_struct->ivar1));
+    memcpy(&p_struct_var->p_internal_struct->ivar2, (ms->ret_outparam_buff) + retval_len + sizeof(p_struct_var->var1)+ sizeof(p_struct_var->var2) + sizeof(p_struct_var->p_internal_struct->ivar1), sizeof(p_struct_var->p_internal_struct->ivar2));
+    return SUCCESS;
+}
+
+
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t secret_data_len, ms_len;
+    if(!marshalled_buff_len)
+        return INVALID_PARAMETER_ERROR;            
+    secret_data_len = sizeof(secret_data);
+    ms_len = sizeof(ms_in_msg_exchange_t) + secret_data_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)secret_data_len;
+    memcpy(&ms->inparam_buff, &secret_data, secret_data_len);
+
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+    return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!inp_secret_data || !ms)
+        return INVALID_PARAMETER_ERROR;    
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+
+    if(len != sizeof(uint32_t))
+        return ATTESTATION_ERROR;
+
+    memcpy(inp_secret_data, buff, sizeof(uint32_t));
+
+    return SUCCESS;
+}
+
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t secret_response_len, ms_len;
+    size_t retval_len, ret_param_len;
+    if(!resp_length)
+        return INVALID_PARAMETER_ERROR;    
+    secret_response_len = sizeof(secret_response);
+    retval_len = secret_response_len;
+    ret_param_len = secret_response_len;
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, &secret_response, secret_response_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+     return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff)
+        return INVALID_PARAMETER_ERROR;    
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *secret_response = (char*)malloc(retval_len);
+    if(!*secret_response)
+    {
+        return MALLOC_ERROR;
+    }
+    memcpy(*secret_response, ms->ret_outparam_buff, retval_len);
+    return SUCCESS;
+}
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Enclave3/Utility_E3.h

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef UTILITY_E3_H__
+#define UTILITY_E3_H__
+
+#include "stdint.h"
+
+
+typedef struct _internal_param_struct_t
+{
+    uint32_t ivar1;
+    uint32_t ivar2;
+}internal_param_struct_t;
+
+typedef struct _external_param_struct_t
+{
+    uint32_t var1;
+    uint32_t var2;
+    internal_param_struct_t *p_internal_struct;
+}external_param_struct_t;
+
+typedef struct _param_struct_t
+{
+    uint32_t var1;
+    uint32_t var2;
+}param_struct_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint32_t marshal_input_parameters_e1_foo1(uint32_t target_fn_id, uint32_t msg_type, external_param_struct_t *p_struct_var, size_t len_data, size_t len_ptr_data, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t unmarshal_retval_and_output_parameters_e1_foo1(char* out_buff, external_param_struct_t *p_struct_var, char** retval);
+uint32_t unmarshal_input_parameters_e3_foo1(param_struct_t *pstruct, ms_in_msg_exchange_t* ms);
+uint32_t marshal_retval_and_output_parameters_e3_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval, param_struct_t *p_struct_var);
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms);
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response);
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response);
+
+#ifdef __cplusplus
+ }
+#endif
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Include/dh_session_protocol.h

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef _DH_SESSION_PROROCOL_H
+#define _DH_SESSION_PROROCOL_H
+
+#include "sgx_ecp_types.h"
+#include "sgx_key.h"
+#include "sgx_report.h"
+#include "sgx_attributes.h"
+
+#define NONCE_SIZE         16
+#define MAC_SIZE           16
+
+#define MSG_BUF_LEN        sizeof(ec_pub_t)*2
+#define MSG_HASH_SZ        32
+
+
+//Session information structure
+typedef struct _la_dh_session_t
+{
+    uint32_t  session_id; //Identifies the current session
+    uint32_t  status; //Indicates session is in progress, active or closed
+    union
+    {
+        struct
+        {
+			sgx_dh_session_t dh_session;
+        }in_progress;
+
+        struct
+        {
+            sgx_key_128bit_t AEK; //Session Key
+            uint32_t counter; //Used to store Message Sequence Number
+        }active;
+    };
+} dh_session_t;
+
+
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/LocalAttestationCode/EnclaveMessageExchange.cpp

@@ -0,0 +1,726 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "sgx_trts.h"
+#include "sgx_utils.h"
+#include "EnclaveMessageExchange.h"
+#include "sgx_eid.h"
+#include "error_codes.h"
+#include "sgx_ecp_types.h"
+#include "sgx_thread.h"
+#include <map>
+#include "dh_session_protocol.h"
+#include "sgx_dh.h"
+#include "sgx_tcrypto.h"
+#include "LocalAttestationCode_t.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint32_t enclave_to_enclave_call_dispatcher(char* decrypted_data, size_t decrypted_data_length, char** resp_buffer, size_t* resp_length);
+uint32_t message_exchange_response_generator(char* decrypted_data, char** resp_buffer, size_t* resp_length);
+uint32_t verify_peer_enclave_trust(sgx_dh_session_enclave_identity_t* peer_enclave_identity);
+
+#ifdef __cplusplus
+}
+#endif
+
+#define MAX_SESSION_COUNT  16
+
+//number of open sessions
+uint32_t g_session_count = 0;
+
+ATTESTATION_STATUS generate_session_id(uint32_t *session_id);
+ATTESTATION_STATUS end_session(sgx_enclave_id_t src_enclave_id);
+
+//Array of open session ids
+session_id_tracker_t *g_session_id_tracker[MAX_SESSION_COUNT];
+
+//Map between the source enclave id and the session information associated with that particular session
+std::map<sgx_enclave_id_t, dh_session_t>g_dest_session_info_map;
+
+//Create a session with the destination enclave
+ATTESTATION_STATUS create_session(sgx_enclave_id_t src_enclave_id,
+                         sgx_enclave_id_t dest_enclave_id,
+                         dh_session_t *session_info)
+{
+    ocall_print_string("[ECALL] create_session()\n");
+    sgx_dh_msg1_t dh_msg1;            //Diffie-Hellman Message 1
+    sgx_key_128bit_t dh_aek;        // Session Key
+    sgx_dh_msg2_t dh_msg2;            //Diffie-Hellman Message 2
+    sgx_dh_msg3_t dh_msg3;            //Diffie-Hellman Message 3
+    uint32_t session_id;
+    uint32_t retstatus;
+    sgx_status_t status = SGX_SUCCESS;
+    sgx_dh_session_t sgx_dh_session;
+    sgx_dh_session_enclave_identity_t responder_identity;
+
+    if(!session_info)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    memset(&dh_aek,0, sizeof(sgx_key_128bit_t));
+    memset(&dh_msg1, 0, sizeof(sgx_dh_msg1_t));
+    memset(&dh_msg2, 0, sizeof(sgx_dh_msg2_t));
+    memset(&dh_msg3, 0, sizeof(sgx_dh_msg3_t));
+    memset(session_info, 0, sizeof(dh_session_t));
+
+    //Intialize the session as a session initiator
+    ocall_print_string("[ECALL] Initializing the session as session initiator...\n");
+    status = sgx_dh_init_session(SGX_DH_SESSION_INITIATOR, &sgx_dh_session);
+    if(SGX_SUCCESS != status)
+    {
+            return status;
+    }
+
+    //Ocall to request for a session with the destination enclave and obtain session id and Message 1 if successful
+    status = session_request_ocall(&retstatus, src_enclave_id, dest_enclave_id, &dh_msg1, &session_id);
+    if (status == SGX_SUCCESS)
+    {
+        if ((ATTESTATION_STATUS)retstatus != SUCCESS)
+            return ((ATTESTATION_STATUS)retstatus);
+    }
+    else
+    {
+        return ATTESTATION_SE_ERROR;
+    }
+
+    ocall_print_string("[ECALL] Processing message1 obtained from Enclave2 and generate message2\n");
+    status = sgx_dh_initiator_proc_msg1(&dh_msg1, &dh_msg2, &sgx_dh_session);
+    if(SGX_SUCCESS != status)
+    {
+         return status;
+    }
+
+    //Send Message 2 to Destination Enclave and get Message 3 in return
+    status = exchange_report_ocall(&retstatus, src_enclave_id, dest_enclave_id, &dh_msg2, &dh_msg3, session_id);
+    if (status == SGX_SUCCESS)
+    {
+        if ((ATTESTATION_STATUS)retstatus != SUCCESS)
+            return ((ATTESTATION_STATUS)retstatus);
+    }
+    else
+    {
+        return ATTESTATION_SE_ERROR;
+    }
+
+    //Process Message 3 obtained from the destination enclave
+    ocall_print_string("[ECALL] Processing message3 obtained from Enclave3\n");
+    status = sgx_dh_initiator_proc_msg3(&dh_msg3, &sgx_dh_session, &dh_aek, &responder_identity);
+    if(SGX_SUCCESS != status)
+    {
+        return status;
+    }
+
+    // Verify the identity of the destination enclave
+    ocall_print_string("[ECALL] Verifying Encalve2(Responder)'s trust\n");
+    if(verify_peer_enclave_trust(&responder_identity) != SUCCESS)
+    {
+        return INVALID_SESSION;
+    }
+
+    memcpy(session_info->active.AEK, &dh_aek, sizeof(sgx_key_128bit_t));
+    session_info->session_id = session_id;
+    session_info->active.counter = 0;
+    session_info->status = ACTIVE;
+    memset(&dh_aek,0, sizeof(sgx_key_128bit_t));
+    return status;
+}
+
+//Handle the request from Source Enclave for a session
+ATTESTATION_STATUS session_request(sgx_enclave_id_t src_enclave_id,
+                          sgx_dh_msg1_t *dh_msg1,
+                          uint32_t *session_id )
+{
+    dh_session_t session_info;
+    sgx_dh_session_t sgx_dh_session;
+    sgx_status_t status = SGX_SUCCESS;
+
+    if(!session_id || !dh_msg1)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    //Intialize the session as a session responder
+    status = sgx_dh_init_session(SGX_DH_SESSION_RESPONDER, &sgx_dh_session);
+    if(SGX_SUCCESS != status)
+    {
+        return status;
+    }
+
+    //get a new SessionID
+    if ((status = (sgx_status_t)generate_session_id(session_id)) != SUCCESS)
+        return status; //no more sessions available
+
+    //Allocate memory for the session id tracker
+    g_session_id_tracker[*session_id] = (session_id_tracker_t *)malloc(sizeof(session_id_tracker_t));
+    if(!g_session_id_tracker[*session_id])
+    {
+        return MALLOC_ERROR;
+    }
+
+    memset(g_session_id_tracker[*session_id], 0, sizeof(session_id_tracker_t));
+    g_session_id_tracker[*session_id]->session_id = *session_id;
+    session_info.status = IN_PROGRESS;
+
+    //Generate Message1 that will be returned to Source Enclave
+    status = sgx_dh_responder_gen_msg1((sgx_dh_msg1_t*)dh_msg1, &sgx_dh_session);
+    if(SGX_SUCCESS != status)
+    {
+        SAFE_FREE(g_session_id_tracker[*session_id]);
+        return status;
+    }
+    memcpy(&session_info.in_progress.dh_session, &sgx_dh_session, sizeof(sgx_dh_session_t));
+    //Store the session information under the correspoding source enlave id key
+    g_dest_session_info_map.insert(std::pair<sgx_enclave_id_t, dh_session_t>(src_enclave_id, session_info));
+
+    return status;
+}
+
+//Verify Message 2, generate Message3 and exchange Message 3 with Source Enclave
+ATTESTATION_STATUS exchange_report(sgx_enclave_id_t src_enclave_id,
+                          sgx_dh_msg2_t *dh_msg2,
+                          sgx_dh_msg3_t *dh_msg3,
+                          uint32_t session_id)
+{
+
+    sgx_key_128bit_t dh_aek;   // Session key
+    dh_session_t *session_info;
+    ATTESTATION_STATUS status = SUCCESS;
+    sgx_dh_session_t sgx_dh_session;
+    sgx_dh_session_enclave_identity_t initiator_identity;
+
+    if(!dh_msg2 || !dh_msg3)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    memset(&dh_aek,0, sizeof(sgx_key_128bit_t));
+    do
+    {
+        //Retreive the session information for the corresponding source enclave id
+        std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_dest_session_info_map.find(src_enclave_id);
+        if(it != g_dest_session_info_map.end())
+        {
+            session_info = &it->second;
+        }
+        else
+        {
+            status = INVALID_SESSION;
+            break;
+        }
+
+        if(session_info->status != IN_PROGRESS)
+        {
+            status = INVALID_SESSION;
+            break;
+        }
+
+        memcpy(&sgx_dh_session, &session_info->in_progress.dh_session, sizeof(sgx_dh_session_t));
+
+        dh_msg3->msg3_body.additional_prop_length = 0;
+        //Process message 2 from source enclave and obtain message 3
+        sgx_status_t se_ret = sgx_dh_responder_proc_msg2(dh_msg2,
+                                                       dh_msg3,
+                                                       &sgx_dh_session,
+                                                       &dh_aek,
+                                                       &initiator_identity);
+        if(SGX_SUCCESS != se_ret)
+        {
+            status = se_ret;
+            break;
+        }
+
+        //Verify source enclave's trust
+          if(verify_peer_enclave_trust(&initiator_identity) != SUCCESS)
+        {
+            return INVALID_SESSION;
+        }
+
+        //save the session ID, status and initialize the session nonce
+        session_info->session_id = session_id;
+        session_info->status = ACTIVE;
+        session_info->active.counter = 0;
+        memcpy(session_info->active.AEK, &dh_aek, sizeof(sgx_key_128bit_t));
+        memset(&dh_aek,0, sizeof(sgx_key_128bit_t));
+        g_session_count++;
+    }while(0);
+
+    if(status != SUCCESS)
+    {
+        end_session(src_enclave_id);
+    }
+
+    return status;
+}
+
+//Request for the response size, send the request message to the destination enclave and receive the response message back
+ATTESTATION_STATUS send_request_receive_response(sgx_enclave_id_t src_enclave_id,
+                                  sgx_enclave_id_t dest_enclave_id,
+                                  dh_session_t *session_info,
+                                  char *inp_buff,
+                                  size_t inp_buff_len,
+                                  size_t max_out_buff_size,
+                                  char **out_buff,
+                                  size_t* out_buff_len)
+{
+    const uint8_t* plaintext;
+    uint32_t plaintext_length;
+    sgx_status_t status;
+    uint32_t retstatus;
+    secure_message_t* req_message;
+    secure_message_t* resp_message;
+    uint8_t *decrypted_data;
+    uint32_t decrypted_data_length;
+    uint32_t plain_text_offset;
+    uint8_t l_tag[TAG_SIZE];
+    size_t max_resp_message_length;
+    plaintext = (const uint8_t*)(" ");
+    plaintext_length = 0;
+
+    if(!session_info || !inp_buff)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    //Check if the nonce for the session has not exceeded 2^32-2 if so end session and start a new session
+    if(session_info->active.counter == ((uint32_t) - 2))
+    {
+        close_session(src_enclave_id, dest_enclave_id);
+        create_session(src_enclave_id, dest_enclave_id, session_info);
+    }
+
+    //Allocate memory for the AES-GCM request message
+    req_message = (secure_message_t*)malloc(sizeof(secure_message_t)+ inp_buff_len);
+    if(!req_message)
+    {
+        return MALLOC_ERROR;
+    }
+
+    memset(req_message,0,sizeof(secure_message_t)+ inp_buff_len);
+    const uint32_t data2encrypt_length = (uint32_t)inp_buff_len;
+    //Set the payload size to data to encrypt length
+    req_message->message_aes_gcm_data.payload_size = data2encrypt_length;
+
+    //Use the session nonce as the payload IV
+    memcpy(req_message->message_aes_gcm_data.reserved,&session_info->active.counter,sizeof(session_info->active.counter));
+
+    //Set the session ID of the message to the current session id
+    req_message->session_id = session_info->session_id;
+
+    //Prepare the request message with the encrypted payload
+    status = sgx_rijndael128GCM_encrypt(&session_info->active.AEK, (uint8_t*)inp_buff, data2encrypt_length,
+                reinterpret_cast<uint8_t *>(&(req_message->message_aes_gcm_data.payload)),
+                reinterpret_cast<uint8_t *>(&(req_message->message_aes_gcm_data.reserved)),
+                sizeof(req_message->message_aes_gcm_data.reserved), plaintext, plaintext_length,
+                &(req_message->message_aes_gcm_data.payload_tag));
+
+    if(SGX_SUCCESS != status)
+    {
+        SAFE_FREE(req_message);
+        return status;
+    }
+
+    //Allocate memory for the response payload to be copied
+    *out_buff = (char*)malloc(max_out_buff_size);
+    if(!*out_buff)
+    {
+        SAFE_FREE(req_message);
+        return MALLOC_ERROR;
+    }
+
+    memset(*out_buff, 0, max_out_buff_size);
+
+    //Allocate memory for the response message
+    resp_message = (secure_message_t*)malloc(sizeof(secure_message_t)+ max_out_buff_size);
+    if(!resp_message)
+    {
+        SAFE_FREE(req_message);
+        return MALLOC_ERROR;
+    }
+
+    memset(resp_message, 0, sizeof(secure_message_t)+ max_out_buff_size);
+
+    //Ocall to send the request to the Destination Enclave and get the response message back
+    status = send_request_ocall(&retstatus, src_enclave_id, dest_enclave_id, req_message,
+                                (sizeof(secure_message_t)+ inp_buff_len), max_out_buff_size,
+                                resp_message, (sizeof(secure_message_t)+ max_out_buff_size));
+    if (status == SGX_SUCCESS)
+    {
+        if ((ATTESTATION_STATUS)retstatus != SUCCESS)
+        {
+            SAFE_FREE(req_message);
+            SAFE_FREE(resp_message);
+            return ((ATTESTATION_STATUS)retstatus);
+        }
+    }
+    else
+    {
+        SAFE_FREE(req_message);
+        SAFE_FREE(resp_message);
+        return ATTESTATION_SE_ERROR;
+    }
+
+    max_resp_message_length = sizeof(secure_message_t)+ max_out_buff_size;
+
+    if(sizeof(resp_message) > max_resp_message_length)
+    {
+        SAFE_FREE(req_message);
+        SAFE_FREE(resp_message);
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    //Code to process the response message from the Destination Enclave
+
+    decrypted_data_length = resp_message->message_aes_gcm_data.payload_size;
+    plain_text_offset = decrypted_data_length;
+    decrypted_data = (uint8_t*)malloc(decrypted_data_length);
+    if(!decrypted_data)
+    {
+        SAFE_FREE(req_message);
+        SAFE_FREE(resp_message);
+        return MALLOC_ERROR;
+    }
+    memset(&l_tag, 0, 16);
+
+    memset(decrypted_data, 0, decrypted_data_length);
+
+    //Decrypt the response message payload
+    status = sgx_rijndael128GCM_decrypt(&session_info->active.AEK, resp_message->message_aes_gcm_data.payload,
+                decrypted_data_length, decrypted_data,
+                reinterpret_cast<uint8_t *>(&(resp_message->message_aes_gcm_data.reserved)),
+                sizeof(resp_message->message_aes_gcm_data.reserved), &(resp_message->message_aes_gcm_data.payload[plain_text_offset]), plaintext_length,
+                &resp_message->message_aes_gcm_data.payload_tag);
+
+    if(SGX_SUCCESS != status)
+    {
+        SAFE_FREE(req_message);
+        SAFE_FREE(decrypted_data);
+        SAFE_FREE(resp_message);
+        return status;
+    }
+
+    // Verify if the nonce obtained in the response is equal to the session nonce + 1 (Prevents replay attacks)
+    if(*(resp_message->message_aes_gcm_data.reserved) != (session_info->active.counter + 1 ))
+    {
+        SAFE_FREE(req_message);
+        SAFE_FREE(resp_message);
+        SAFE_FREE(decrypted_data);
+        return INVALID_PARAMETER_ERROR;
+    }
+
+        //Update the value of the session nonce in the source enclave
+    session_info->active.counter = session_info->active.counter + 1;
+
+    memcpy(out_buff_len, &decrypted_data_length, sizeof(decrypted_data_length));
+    memcpy(*out_buff, decrypted_data, decrypted_data_length);
+
+    SAFE_FREE(decrypted_data);
+    SAFE_FREE(req_message);
+    SAFE_FREE(resp_message);
+    return SUCCESS;
+
+
+}
+
+//Process the request from the Source enclave and send the response message back to the Source enclave
+ATTESTATION_STATUS generate_response(sgx_enclave_id_t src_enclave_id,
+                                     secure_message_t* req_message,
+                                     size_t req_message_size,
+                                     size_t max_payload_size,
+                                     secure_message_t* resp_message,
+                                     size_t resp_message_size)
+{
+    const uint8_t* plaintext;
+    uint32_t plaintext_length;
+    uint8_t *decrypted_data;
+    uint32_t decrypted_data_length;
+    uint32_t plain_text_offset;
+    ms_in_msg_exchange_t * ms;
+    size_t resp_data_length;
+    size_t resp_message_calc_size;
+    char* resp_data;
+    uint8_t l_tag[TAG_SIZE];
+    size_t header_size, expected_payload_size;
+    dh_session_t *session_info;
+    secure_message_t* temp_resp_message;
+    uint32_t ret;
+    sgx_status_t status;
+
+    plaintext = (const uint8_t*)(" ");
+    plaintext_length = 0;
+
+    if(!req_message || !resp_message)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    //Get the session information from the map corresponding to the source enclave id
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_dest_session_info_map.find(src_enclave_id);
+    if(it != g_dest_session_info_map.end())
+    {
+        session_info = &it->second;
+    }
+    else
+    {
+        return INVALID_SESSION;
+    }
+
+    if(session_info->status != ACTIVE)
+    {
+        return INVALID_SESSION;
+    }
+
+    //Set the decrypted data length to the payload size obtained from the message
+    decrypted_data_length = req_message->message_aes_gcm_data.payload_size;
+
+    header_size = sizeof(secure_message_t);
+    expected_payload_size = req_message_size - header_size;
+
+    //Verify the size of the payload
+    if(expected_payload_size != decrypted_data_length)
+        return INVALID_PARAMETER_ERROR;
+
+    memset(&l_tag, 0, 16);
+    plain_text_offset = decrypted_data_length;
+    decrypted_data = (uint8_t*)malloc(decrypted_data_length);
+    if(!decrypted_data)
+    {
+            return MALLOC_ERROR;
+    }
+
+    memset(decrypted_data, 0, decrypted_data_length);
+
+    //Decrypt the request message payload from source enclave
+    status = sgx_rijndael128GCM_decrypt(&session_info->active.AEK, req_message->message_aes_gcm_data.payload,
+                decrypted_data_length, decrypted_data,
+                reinterpret_cast<uint8_t *>(&(req_message->message_aes_gcm_data.reserved)),
+                sizeof(req_message->message_aes_gcm_data.reserved), &(req_message->message_aes_gcm_data.payload[plain_text_offset]), plaintext_length,
+                &req_message->message_aes_gcm_data.payload_tag);
+
+    if(SGX_SUCCESS != status)
+    {
+        SAFE_FREE(decrypted_data);
+        return status;
+    }
+
+    //Casting the decrypted data to the marshaling structure type to obtain type of request (generic message exchange/enclave to enclave call)
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+
+
+    // Verify if the nonce obtained in the request is equal to the session nonce
+    if((uint32_t)*(req_message->message_aes_gcm_data.reserved) != session_info->active.counter || *(req_message->message_aes_gcm_data.reserved) > ((2^32)-2))
+    {
+        SAFE_FREE(decrypted_data);
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    if(ms->msg_type == MESSAGE_EXCHANGE)
+    {
+        //Call the generic secret response generator for message exchange
+        ret = message_exchange_response_generator((char*)decrypted_data, &resp_data, &resp_data_length);
+        if(ret !=0)
+        {
+            SAFE_FREE(decrypted_data);
+            SAFE_FREE(resp_data);
+            return INVALID_SESSION;
+        }
+    }
+    else if(ms->msg_type == ENCLAVE_TO_ENCLAVE_CALL)
+    {
+        //Call the destination enclave's dispatcher to call the appropriate function in the destination enclave
+        ret = enclave_to_enclave_call_dispatcher((char*)decrypted_data, decrypted_data_length, &resp_data, &resp_data_length);
+        if(ret !=0)
+        {
+            SAFE_FREE(decrypted_data);
+            SAFE_FREE(resp_data);
+            return INVALID_SESSION;
+        }
+    }
+    else
+    {
+        SAFE_FREE(decrypted_data);
+        return INVALID_REQUEST_TYPE_ERROR;
+    }
+
+
+    if(resp_data_length > max_payload_size)
+    {
+        SAFE_FREE(resp_data);
+        SAFE_FREE(decrypted_data);
+        return OUT_BUFFER_LENGTH_ERROR;
+    }
+
+    resp_message_calc_size = sizeof(secure_message_t)+ resp_data_length;
+
+    if(resp_message_calc_size > resp_message_size)
+    {
+        SAFE_FREE(resp_data);
+        SAFE_FREE(decrypted_data);
+        return OUT_BUFFER_LENGTH_ERROR;
+    }
+
+    //Code to build the response back to the Source Enclave
+    temp_resp_message = (secure_message_t*)malloc(resp_message_calc_size);
+    if(!temp_resp_message)
+    {
+            SAFE_FREE(resp_data);
+            SAFE_FREE(decrypted_data);
+            return MALLOC_ERROR;
+    }
+
+    memset(temp_resp_message,0,sizeof(secure_message_t)+ resp_data_length);
+    const uint32_t data2encrypt_length = (uint32_t)resp_data_length;
+    temp_resp_message->session_id = session_info->session_id;
+    temp_resp_message->message_aes_gcm_data.payload_size = data2encrypt_length;
+
+    //Increment the Session Nonce (Replay Protection)
+    session_info->active.counter = session_info->active.counter + 1;
+
+    //Set the response nonce as the session nonce
+    memcpy(&temp_resp_message->message_aes_gcm_data.reserved,&session_info->active.counter,sizeof(session_info->active.counter));
+
+    //Prepare the response message with the encrypted payload
+    status = sgx_rijndael128GCM_encrypt(&session_info->active.AEK, (uint8_t*)resp_data, data2encrypt_length,
+                reinterpret_cast<uint8_t *>(&(temp_resp_message->message_aes_gcm_data.payload)),
+                reinterpret_cast<uint8_t *>(&(temp_resp_message->message_aes_gcm_data.reserved)),
+                sizeof(temp_resp_message->message_aes_gcm_data.reserved), plaintext, plaintext_length,
+                &(temp_resp_message->message_aes_gcm_data.payload_tag));
+
+    if(SGX_SUCCESS != status)
+    {
+        SAFE_FREE(resp_data);
+        SAFE_FREE(decrypted_data);
+        SAFE_FREE(temp_resp_message);
+        return status;
+    }
+
+    memset(resp_message, 0, sizeof(secure_message_t)+ resp_data_length);
+    memcpy(resp_message, temp_resp_message, sizeof(secure_message_t)+ resp_data_length);
+
+    SAFE_FREE(decrypted_data);
+    SAFE_FREE(resp_data);
+    SAFE_FREE(temp_resp_message);
+
+    return SUCCESS;
+}
+
+//Close a current session
+ATTESTATION_STATUS close_session(sgx_enclave_id_t src_enclave_id,
+                        sgx_enclave_id_t dest_enclave_id)
+{
+    sgx_status_t status;
+
+    uint32_t retstatus;
+
+    //Ocall to ask the destination enclave to end the session
+    status = end_session_ocall(&retstatus, src_enclave_id, dest_enclave_id);
+    if (status == SGX_SUCCESS)
+    {
+        if ((ATTESTATION_STATUS)retstatus != SUCCESS)
+            return ((ATTESTATION_STATUS)retstatus);
+    }
+    else
+    {
+        return ATTESTATION_SE_ERROR;
+    }
+    return SUCCESS;
+}
+
+//Respond to the request from the Source Enclave to close the session
+ATTESTATION_STATUS end_session(sgx_enclave_id_t src_enclave_id)
+{
+    ATTESTATION_STATUS status = SUCCESS;
+    int i;
+    dh_session_t session_info;
+    uint32_t session_id;
+
+    //Get the session information from the map corresponding to the source enclave id
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_dest_session_info_map.find(src_enclave_id);
+    if(it != g_dest_session_info_map.end())
+    {
+        session_info = it->second;
+    }
+    else
+    {
+        return INVALID_SESSION;
+    }
+
+    session_id = session_info.session_id;
+    //Erase the session information for the current session
+    g_dest_session_info_map.erase(src_enclave_id);
+
+    //Update the session id tracker
+    if (g_session_count > 0)
+    {
+        //check if session exists
+        for (i=1; i <= MAX_SESSION_COUNT; i++)
+        {
+            if(g_session_id_tracker[i-1] != NULL && g_session_id_tracker[i-1]->session_id == session_id)
+            {
+                memset(g_session_id_tracker[i-1], 0, sizeof(session_id_tracker_t));
+                SAFE_FREE(g_session_id_tracker[i-1]);
+                g_session_count--;
+                break;
+            }
+        }
+    }
+
+    return status;
+
+}
+
+
+//Returns a new sessionID for the source destination session
+ATTESTATION_STATUS generate_session_id(uint32_t *session_id)
+{
+    ATTESTATION_STATUS status = SUCCESS;
+
+    if(!session_id)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    //if the session structure is untintialized, set that as the next session ID
+    for (int i = 0; i < MAX_SESSION_COUNT; i++)
+    {
+        if (g_session_id_tracker[i] == NULL)
+        {
+            *session_id = i;
+            return status;
+        }
+    }
+
+    status = NO_AVAILABLE_SESSION_ERROR;
+
+    return status;
+
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/LocalAttestationCode/EnclaveMessageExchange.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "datatypes.h"
+#include "sgx_eid.h"
+#include "sgx_trts.h"
+#include <map>
+#include "dh_session_protocol.h"
+
+#ifndef LOCALATTESTATION_H_
+#define LOCALATTESTATION_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint32_t SGXAPI create_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, dh_session_t *p_session_info);
+uint32_t SGXAPI send_request_receive_response(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, dh_session_t *p_session_info, char *inp_buff, size_t inp_buff_len, size_t max_out_buff_size, char **out_buff, size_t* out_buff_len);
+uint32_t SGXAPI close_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/LocalAttestationCode/LocalAttestationCode.edl

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+enclave  {
+    include "sgx_eid.h"
+    include "datatypes.h"
+    include "../Include/dh_session_protocol.h"
+    trusted{
+        public uint32_t session_request(sgx_enclave_id_t src_enclave_id, [out] sgx_dh_msg1_t *dh_msg1, [out] uint32_t *session_id);
+        public uint32_t exchange_report(sgx_enclave_id_t src_enclave_id, [in] sgx_dh_msg2_t *dh_msg2, [out] sgx_dh_msg3_t *dh_msg3, uint32_t session_id);
+        public uint32_t generate_response(sgx_enclave_id_t src_enclave_id, [in, size = req_message_size] secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, [out, size=resp_message_size] secure_message_t* resp_message, size_t resp_message_size );
+        public uint32_t end_session(sgx_enclave_id_t src_enclave_id);        
+    };
+
+    untrusted{
+        uint32_t session_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, [out] sgx_dh_msg1_t *dh_msg1,[out] uint32_t *session_id);
+        uint32_t exchange_report_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, [in] sgx_dh_msg2_t *dh_msg2, [out] sgx_dh_msg3_t *dh_msg3, uint32_t session_id);
+        uint32_t send_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, [in, size = req_message_size] secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, [out, size=resp_message_size] secure_message_t* resp_message, size_t resp_message_size);
+        uint32_t end_session_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+        void ocall_print_string([in, string] const char *str);
+    };
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/LocalAttestationCode/datatypes.h

@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "sgx_report.h"
+#include "sgx_eid.h"
+#include "sgx_ecp_types.h"
+#include "sgx_dh.h"
+#include "sgx_tseal.h"
+
+#ifndef DATATYPES_H_
+#define DATATYPES_H_
+
+#define DH_KEY_SIZE        20
+#define NONCE_SIZE         16
+#define MAC_SIZE           16
+#define MAC_KEY_SIZE       16
+#define PADDING_SIZE       16
+
+#define TAG_SIZE        16
+#define IV_SIZE            12
+
+#define DERIVE_MAC_KEY      0x0
+#define DERIVE_SESSION_KEY  0x1
+#define DERIVE_VK1_KEY      0x3
+#define DERIVE_VK2_KEY      0x4
+
+#define CLOSED 0x0
+#define IN_PROGRESS 0x1
+#define ACTIVE 0x2
+
+#define MESSAGE_EXCHANGE 0x0
+#define ENCLAVE_TO_ENCLAVE_CALL 0x1
+
+#define INVALID_ARGUMENT                   -2   ///< Invalid function argument
+#define LOGIC_ERROR                        -3   ///< Functional logic error
+#define FILE_NOT_FOUND                     -4   ///< File not found
+
+#define SAFE_FREE(ptr)     {if (NULL != (ptr)) {free(ptr); (ptr)=NULL;}}
+
+#define VMC_ATTRIBUTE_MASK  0xFFFFFFFFFFFFFFCB
+
+typedef uint8_t dh_nonce[NONCE_SIZE];
+typedef uint8_t cmac_128[MAC_SIZE];
+
+#pragma pack(push, 1)
+
+//Format of the AES-GCM message being exchanged between the source and the destination enclaves
+typedef struct _secure_message_t
+{
+    uint32_t session_id; //Session ID identifyting the session to which the message belongs
+    sgx_aes_gcm_data_t message_aes_gcm_data;    
+}secure_message_t;
+
+//Format of the input function parameter structure
+typedef struct _ms_in_msg_exchange_t {
+    uint32_t msg_type; //Type of Call E2E or general message exchange
+    uint32_t target_fn_id; //Function Id to be called in Destination. Is valid only when msg_type=ENCLAVE_TO_ENCLAVE_CALL
+    uint32_t inparam_buff_len; //Length of the serialized input parameters
+    char inparam_buff[]; //Serialized input parameters
+} ms_in_msg_exchange_t;
+
+//Format of the return value and output function parameter structure
+typedef struct _ms_out_msg_exchange_t {
+    uint32_t retval_len; //Length of the return value
+    uint32_t ret_outparam_buff_len; //Length of the serialized return value and output parameters
+    char ret_outparam_buff[]; //Serialized return value and output parameters
+} ms_out_msg_exchange_t;
+
+//Session Tracker to generate session ids
+typedef struct _session_id_tracker_t
+{
+    uint32_t          session_id;
+}session_id_tracker_t;
+
+#pragma pack(pop)
+
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/LocalAttestationCode/error_codes.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef ERROR_CODES_H_
+#define ERROR_CODES_H_
+
+typedef uint32_t ATTESTATION_STATUS;
+
+#define SUCCESS                          0x00
+#define INVALID_PARAMETER                0xE1
+#define VALID_SESSION                    0xE2
+#define INVALID_SESSION                  0xE3
+#define ATTESTATION_ERROR                0xE4
+#define ATTESTATION_SE_ERROR             0xE5
+#define IPP_ERROR                        0xE6
+#define NO_AVAILABLE_SESSION_ERROR       0xE7
+#define MALLOC_ERROR                     0xE8
+#define ERROR_TAG_MISMATCH               0xE9
+#define OUT_BUFFER_LENGTH_ERROR          0xEA
+#define INVALID_REQUEST_TYPE_ERROR       0xEB
+#define INVALID_PARAMETER_ERROR          0xEC
+#define ENCLAVE_TRUST_ERROR              0xED
+#define ENCRYPT_DECRYPT_ERROR            0xEE
+#define DUPLICATE_SESSION                0xEF
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Makefile

@@ -0,0 +1,346 @@
+#
+# Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of Intel Corporation nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#
+
+######## SGX SDK Settings ########
+
+SGX_SDK ?= /opt/intel/sgxsdk
+SGX_MODE ?= HW
+SGX_ARCH ?= x64
+SGX_DEBUG ?= 1
+
+ifeq ($(shell getconf LONG_BIT), 32)
+	SGX_ARCH := x86
+else ifeq ($(findstring -m32, $(CXXFLAGS)), -m32)
+	SGX_ARCH := x86
+endif
+
+ifeq ($(SGX_ARCH), x86)
+	SGX_COMMON_CFLAGS := -m32
+	SGX_LIBRARY_PATH := $(SGX_SDK)/lib
+	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x86/sgx_sign
+	SGX_EDGER8R := $(SGX_SDK)/bin/x86/sgx_edger8r
+else
+	SGX_COMMON_CFLAGS := -m64
+	SGX_LIBRARY_PATH := $(SGX_SDK)/lib64
+	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x64/sgx_sign
+	SGX_EDGER8R := $(SGX_SDK)/bin/x64/sgx_edger8r
+endif
+
+ifeq ($(SGX_DEBUG), 1)
+ifeq ($(SGX_PRERELEASE), 1)
+$(error Cannot set SGX_DEBUG and SGX_PRERELEASE at the same time!!)
+endif
+endif
+
+ifeq ($(SGX_DEBUG), 1)
+	SGX_COMMON_CFLAGS += -O0 -g
+else
+	SGX_COMMON_CFLAGS += -O2
+endif
+
+######## Library Settings ########
+
+Trust_Lib_Name := libLocalAttestation_Trusted.a
+TrustLib_Cpp_Files := $(wildcard LocalAttestationCode/*.cpp)
+TrustLib_Cpp_Objects := $(TrustLib_Cpp_Files:.cpp=.o)
+TrustLib_Include_Paths := -I$(SGX_SDK)/include -I$(SGX_SDK)/include/tlibc -I$(SGX_SDK)/include/libcxx -I$(SGX_SDK)/include/epid -I./Include
+TrustLib_Compile_Flags := $(SGX_COMMON_CFLAGS) -nostdinc -fvisibility=hidden -fpie -fstack-protector  $(TrustLib_Include_Paths)
+TrustLib_Compile_Cxx_Flags :=  -std=c++11 -nostdinc++
+
+UnTrustLib_Name := libLocalAttestation_unTrusted.a
+UnTrustLib_Cpp_Files := $(wildcard Untrusted_LocalAttestation/*.cpp)
+UnTrustLib_Cpp_Objects := $(UnTrustLib_Cpp_Files:.cpp=.o)
+UnTrustLib_Include_Paths := -I$(SGX_SDK)/include -I$(SGX_SDK)/include/ippcp -I./Include -I./LocalAttestationCode
+UnTrustLib_Compile_Flags := $(SGX_COMMON_CFLAGS) -fPIC -Wno-attributes -std=c++11 $(UnTrustLib_Include_Paths)
+
+######## App Settings ########
+
+ifneq ($(SGX_MODE), HW)
+	Urts_Library_Name := sgx_urts_sim
+else
+	Urts_Library_Name := sgx_urts
+endif
+
+App_Cpp_Files := $(wildcard App/*.cpp)
+App_Include_Paths := -I$(SGX_SDK)/include -I$(SGX_SDK)/include/ippcp -I./Include -I./LocalAttestationCode
+
+App_Compile_Flags := $(SGX_COMMON_CFLAGS) -fPIC -Wno-attributes $(App_Include_Paths)
+# Three configuration modes - Debug, prerelease, release
+#   Debug - Macro DEBUG enabled.
+#   Prerelease - Macro NDEBUG and EDEBUG enabled.
+#   Release - Macro NDEBUG enabled.
+ifeq ($(SGX_DEBUG), 1)
+	App_Compile_Flags += -DDEBUG -UNDEBUG -UEDEBUG
+else ifeq ($(SGX_PRERELEASE), 1)
+	App_Compile_Flags += -DNDEBUG -DEDEBUG -UDEBUG
+else
+	App_Compile_Flags += -DNDEBUG -UEDEBUG -UDEBUG
+endif
+
+App_Link_Flags := $(SGX_COMMON_CFLAGS) -L$(SGX_LIBRARY_PATH) -l$(Urts_Library_Name) -L. -lpthread -lLocalAttestation_unTrusted 
+
+ifneq ($(SGX_MODE), HW)
+	App_Link_Flags += -lsgx_uae_service_sim
+else
+	App_Link_Flags += -lsgx_uae_service
+endif
+
+App_Cpp_Objects := $(App_Cpp_Files:.cpp=.o)
+App_Name := app
+
+######## Enclave Settings ########
+
+Enclave1_Version_Script := Enclave1/Enclave1.lds
+Enclave2_Version_Script := Enclave2/Enclave2.lds
+Enclave3_Version_Script := Enclave3/Enclave3.lds
+
+ifneq ($(SGX_MODE), HW)
+	Trts_Library_Name := sgx_trts_sim
+	Service_Library_Name := sgx_tservice_sim
+else
+	Trts_Library_Name := sgx_trts
+	Service_Library_Name := sgx_tservice
+endif
+Crypto_Library_Name := sgx_tcrypto
+
+Enclave_Cpp_Files_1 := $(wildcard Enclave1/*.cpp)
+Enclave_Cpp_Files_2 := $(wildcard Enclave2/*.cpp)
+Enclave_Cpp_Files_3 := $(wildcard Enclave3/*.cpp)
+Enclave_Include_Paths := -I$(SGX_SDK)/include -I$(SGX_SDK)/include/tlibc -I$(SGX_SDK)/include/libcxx -I./LocalAttestationCode -I./Include
+
+CC_BELOW_4_9 := $(shell expr "`$(CC) -dumpversion`" \< "4.9")
+ifeq ($(CC_BELOW_4_9), 1)
+	Enclave_Compile_Flags := $(SGX_COMMON_CFLAGS) -nostdinc -fvisibility=hidden -fpie -ffunction-sections -fdata-sections -fstack-protector
+else
+	Enclave_Compile_Flags := $(SGX_COMMON_CFLAGS) -nostdinc -fvisibility=hidden -fpie -ffunction-sections -fdata-sections -fstack-protector-strong
+endif
+
+Enclave_Compile_Flags += $(Enclave_Include_Paths)
+
+# To generate a proper enclave, it is recommended to follow below guideline to link the trusted libraries:
+#    1. Link sgx_trts with the `--whole-archive' and `--no-whole-archive' options,
+#       so that the whole content of trts is included in the enclave.
+#    2. For other libraries, you just need to pull the required symbols.
+#       Use `--start-group' and `--end-group' to link these libraries.
+# Do NOT move the libraries linked with `--start-group' and `--end-group' within `--whole-archive' and `--no-whole-archive' options.
+# Otherwise, you may get some undesirable errors.
+Common_Enclave_Link_Flags := $(SGX_COMMON_CFLAGS) -Wl,--no-undefined -nostdlib -nodefaultlibs -nostartfiles -L$(SGX_LIBRARY_PATH) \
+	-Wl,--whole-archive -l$(Trts_Library_Name) -Wl,--no-whole-archive \
+	-Wl,--start-group -lsgx_tstdc -lsgx_tcxx -l$(Crypto_Library_Name) -L. -lLocalAttestation_Trusted -l$(Service_Library_Name) -Wl,--end-group \
+	-Wl,-Bstatic -Wl,-Bsymbolic -Wl,--no-undefined \
+	-Wl,-pie,-eenclave_entry -Wl,--export-dynamic  \
+	-Wl,--defsym,__ImageBase=0 -Wl,--gc-sections
+Enclave1_Link_Flags := $(Common_Enclave_Link_Flags) -Wl,--version-script=$(Enclave1_Version_Script)
+Enclave2_Link_Flags := $(Common_Enclave_Link_Flags) -Wl,--version-script=$(Enclave2_Version_Script)
+Enclave3_Link_Flags := $(Common_Enclave_Link_Flags) -Wl,--version-script=$(Enclave3_Version_Script)
+
+Enclave_Cpp_Objects_1 := $(Enclave_Cpp_Files_1:.cpp=.o)
+Enclave_Cpp_Objects_2 := $(Enclave_Cpp_Files_2:.cpp=.o)
+Enclave_Cpp_Objects_3 := $(Enclave_Cpp_Files_3:.cpp=.o)
+
+Enclave_Name_1 := libenclave1.so
+Enclave_Name_2 := libenclave2.so
+Enclave_Name_3 := libenclave3.so
+
+ifeq ($(SGX_MODE), HW)
+ifeq ($(SGX_DEBUG), 1)
+	Build_Mode = HW_DEBUG
+else ifeq ($(SGX_PRERELEASE), 1)
+	Build_Mode = HW_PRERELEASE
+else
+	Build_Mode = HW_RELEASE
+endif
+else
+ifeq ($(SGX_DEBUG), 1)
+	Build_Mode = SIM_DEBUG
+else ifeq ($(SGX_PRERELEASE), 1)
+	Build_Mode = SIM_PRERELEASE
+else
+	Build_Mode = SIM_RELEASE
+endif
+endif
+
+ifeq ($(Build_Mode), HW_RELEASE)
+all: .config_$(Build_Mode)_$(SGX_ARCH) $(Trust_Lib_Name) $(UnTrustLib_Name) Enclave1.so Enclave2.so Enclave3.so $(App_Name)
+	@echo "The project has been built in release hardware mode."
+	@echo "Please sign the enclaves (Enclave1.so, Enclave2.so, Enclave3.so) first with your signing keys before you run the $(App_Name) to launch and access the enclave."
+	@echo "To sign the enclaves use the following commands:"
+	@echo "   $(SGX_ENCLAVE_SIGNER) sign -key <key1> -enclave Enclave1.so -out <$(Enclave_Name_1)> -config Enclave1/Enclave1.config.xml"
+	@echo "   $(SGX_ENCLAVE_SIGNER) sign -key <key2> -enclave Enclave2.so -out <$(Enclave_Name_2)> -config Enclave2/Enclave2.config.xml"
+	@echo "   $(SGX_ENCLAVE_SIGNER) sign -key <key3> -enclave Enclave3.so -out <$(Enclave_Name_3)> -config Enclave3/Enclave3.config.xml"
+	@echo "You can also sign the enclaves using an external signing tool."
+	@echo "To build the project in simulation mode set SGX_MODE=SIM. To build the project in prerelease mode set SGX_PRERELEASE=1 and SGX_MODE=HW."
+else
+all: .config_$(Build_Mode)_$(SGX_ARCH) $(Trust_Lib_Name) $(UnTrustLib_Name) $(Enclave_Name_1) $(Enclave_Name_2) $(Enclave_Name_3) $(App_Name)
+ifeq ($(Build_Mode), HW_DEBUG)
+	@echo "The project has been built in debug hardware mode."
+else ifeq ($(Build_Mode), SIM_DEBUG)
+	@echo "The project has been built in debug simulation mode."
+else ifeq ($(Build_Mode), HW_PRERELEASE)
+	@echo "The project has been built in pre-release hardware mode."
+else ifeq ($(Build_Mode), SIM_PRERELEASE)
+	@echo "The project has been built in pre-release simulation mode."
+else
+	@echo "The project has been built in release simulation mode."
+endif
+endif
+
+.config_$(Build_Mode)_$(SGX_ARCH):
+	@rm -rf .config_* $(App_Name) *.so *.a App/*.o Enclave1/*.o Enclave1/*_t.* Enclave1/*_u.* Enclave2/*.o Enclave2/*_t.* Enclave2/*_u.* Enclave3/*.o Enclave3/*_t.* Enclave3/*_u.*              LocalAttestationCode/*.o Untrusted_LocalAttestation/*.o LocalAttestationCode/*_t.* 
+	@touch .config_$(Build_Mode)_$(SGX_ARCH)
+
+######## Library Objects ########
+
+LocalAttestationCode/LocalAttestationCode_t.c LocalAttestationCode/LocalAttestationCode_t.h : $(SGX_EDGER8R) LocalAttestationCode/LocalAttestationCode.edl
+	@cd LocalAttestationCode && $(SGX_EDGER8R) --trusted ../LocalAttestationCode/LocalAttestationCode.edl --search-path $(SGX_SDK)/include 
+	@echo "GEN  =>  $@"
+
+LocalAttestationCode/LocalAttestationCode_t.o: LocalAttestationCode/LocalAttestationCode_t.c
+	@$(CC) $(TrustLib_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+LocalAttestationCode/%.o: LocalAttestationCode/%.cpp LocalAttestationCode/LocalAttestationCode_t.h
+	@$(CXX) $(TrustLib_Compile_Flags) $(TrustLib_Compile_Cxx_Flags) -c $< -o $@
+	@echo "CC   <= $<"
+
+$(Trust_Lib_Name): LocalAttestationCode/LocalAttestationCode_t.o $(TrustLib_Cpp_Objects)
+	@$(AR) rcs $@ $^
+	@echo "GEN  =>  $@"
+
+Untrusted_LocalAttestation/%.o: Untrusted_LocalAttestation/%.cpp
+	@$(CXX) $(UnTrustLib_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+$(UnTrustLib_Name): $(UnTrustLib_Cpp_Objects)
+	@$(AR) rcs $@ $^
+	@echo "GEN  =>  $@"
+
+######## App Objects ########
+Enclave1/Enclave1_u.c Enclave1/Enclave1_u.h: $(SGX_EDGER8R) Enclave1/Enclave1.edl
+	@cd Enclave1 && $(SGX_EDGER8R) --use-prefix --untrusted ../Enclave1/Enclave1.edl --search-path $(SGX_SDK)/include 
+	@echo "GEN  =>  $@"
+
+App/Enclave1_u.o: Enclave1/Enclave1_u.c
+	@$(CC) $(App_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+Enclave2/Enclave2_u.c Enclave2/Enclave2_u.h: $(SGX_EDGER8R) Enclave2/Enclave2.edl
+	@cd Enclave2 && $(SGX_EDGER8R) --use-prefix --untrusted ../Enclave2/Enclave2.edl --search-path $(SGX_SDK)/include 
+	@echo "GEN  =>  $@"
+
+App/Enclave2_u.o: Enclave2/Enclave2_u.c
+	@$(CC) $(App_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+Enclave3/Enclave3_u.c Enclave3/Enclave3_u.h: $(SGX_EDGER8R) Enclave3/Enclave3.edl
+	@cd Enclave3 && $(SGX_EDGER8R) --use-prefix --untrusted ../Enclave3/Enclave3.edl --search-path $(SGX_SDK)/include 
+	@echo "GEN  =>  $@"
+
+App/Enclave3_u.o: Enclave3/Enclave3_u.c
+	@$(CC) $(App_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+App/%.o: App/%.cpp Enclave1/Enclave1_u.h Enclave2/Enclave2_u.h Enclave3/Enclave3_u.h
+	@$(CXX) $(App_Compile_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+$(App_Name): App/Enclave1_u.o App/Enclave2_u.o App/Enclave3_u.o $(App_Cpp_Objects) $(UnTrustLib_Name)
+	@$(CXX) $^ -o $@ $(App_Link_Flags)
+	@echo "LINK =>  $@"
+
+
+######## Enclave Objects ########
+
+Enclave1/Enclave1_t.c Enclave1/Enclave1_t.h: $(SGX_EDGER8R) Enclave1/Enclave1.edl
+	@cd Enclave1 && $(SGX_EDGER8R) --use-prefix --trusted ../Enclave1/Enclave1.edl --search-path $(SGX_SDK)/include 
+	@echo "GEN  =>  $@"
+
+Enclave1/Enclave1_t.o: Enclave1/Enclave1_t.c
+	@$(CC) $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+Enclave1/%.o: Enclave1/%.cpp Enclave1/Enclave1_t.h
+	@$(CXX) -std=c++11 -nostdinc++ $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+Enclave1.so: Enclave1/Enclave1_t.o $(Enclave_Cpp_Objects_1) $(Trust_Lib_Name)
+	@$(CXX) Enclave1/Enclave1_t.o $(Enclave_Cpp_Objects_1) -o $@ $(Enclave1_Link_Flags)
+	@echo "LINK =>  $@"
+
+$(Enclave_Name_1): Enclave1.so
+	@$(SGX_ENCLAVE_SIGNER) sign -key Enclave1/Enclave1_private.pem -enclave Enclave1.so -out $@ -config Enclave1/Enclave1.config.xml
+	@echo "SIGN =>  $@"
+
+Enclave2/Enclave2_t.c: $(SGX_EDGER8R) Enclave2/Enclave2.edl
+	@cd Enclave2 && $(SGX_EDGER8R)  --use-prefix --trusted ../Enclave2/Enclave2.edl --search-path $(SGX_SDK)/include
+	@echo "GEN  =>  $@"
+
+Enclave2/Enclave2_t.o: Enclave2/Enclave2_t.c
+	@$(CC) $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+Enclave2/%.o: Enclave2/%.cpp
+	@$(CXX) -std=c++11 -nostdinc++ $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+Enclave2.so: Enclave2/Enclave2_t.o $(Enclave_Cpp_Objects_2) $(Trust_Lib_Name)
+	@$(CXX) Enclave2/Enclave2_t.o $(Enclave_Cpp_Objects_2) -o $@ $(Enclave2_Link_Flags)
+	@echo "LINK =>  $@"
+
+$(Enclave_Name_2): Enclave2.so
+	@$(SGX_ENCLAVE_SIGNER) sign -key Enclave2/Enclave2_private.pem -enclave Enclave2.so -out $@ -config Enclave2/Enclave2.config.xml
+	@echo "SIGN =>  $@"
+
+Enclave3/Enclave3_t.c: $(SGX_EDGER8R) Enclave3/Enclave3.edl
+	@cd Enclave3 && $(SGX_EDGER8R)  --use-prefix --trusted ../Enclave3/Enclave3.edl --search-path $(SGX_SDK)/include
+	@echo "GEN  =>  $@"
+
+Enclave3/Enclave3_t.o: Enclave3/Enclave3_t.c
+	@$(CC) $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+Enclave3/%.o: Enclave3/%.cpp
+	@$(CXX) -std=c++11 -nostdinc++ $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+Enclave3.so: Enclave3/Enclave3_t.o $(Enclave_Cpp_Objects_3) $(Trust_Lib_Name)
+	@$(CXX) Enclave3/Enclave3_t.o $(Enclave_Cpp_Objects_3) -o $@ $(Enclave3_Link_Flags)
+	@echo "LINK =>  $@"
+
+$(Enclave_Name_3): Enclave3.so
+	@$(SGX_ENCLAVE_SIGNER) sign -key Enclave3/Enclave3_private.pem -enclave Enclave3.so -out $@ -config Enclave3/Enclave3.config.xml
+	@echo "SIGN =>  $@"
+
+######## Clean ########
+.PHONY: clean
+
+clean:
+	@rm -rf .config_* $(App_Name) *.so *.a App/*.o Enclave1/*.o Enclave1/*_t.* Enclave1/*_u.* Enclave2/*.o Enclave2/*_t.* Enclave2/*_u.* Enclave3/*.o Enclave3/*_t.* Enclave3/*_u.* LocalAttestationCode/*.o Untrusted_LocalAttestation/*.o LocalAttestationCode/*_t.*

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/README.txt

@@ -0,0 +1,29 @@
+---------------------------
+Purpose of LocalAttestation
+---------------------------
+The project demonstrates:
+- How to establish a protected channel
+- Secret message exchange using enclave to enclave function calls
+
+------------------------------------
+How to Build/Execute the Sample Code
+------------------------------------
+1. Install Intel(R) Software Guard Extensions (Intel(R) SGX) SDK for Linux* OS
+2. Make sure your environment is set:
+    $ source ${sgx-sdk-install-path}/environment
+3. Build the project with the prepared Makefile:
+    a. Hardware Mode, Debug build:
+        $ make
+    b. Hardware Mode, Pre-release build:
+        $ make SGX_PRERELEASE=1 SGX_DEBUG=0
+    c. Hardware Mode, Release build:
+        $ make SGX_DEBUG=0
+    d. Simulation Mode, Debug build:
+        $ make SGX_MODE=SIM
+    e. Simulation Mode, Pre-release build:
+        $ make SGX_MODE=SIM SGX_PRERELEASE=1 SGX_DEBUG=0
+    f. Simulation Mode, Release build:
+        $ make SGX_MODE=SIM SGX_DEBUG=0
+4. Execute the binary directly:
+    $ ./app
+5. Remember to "make clean" before switching build mode

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Untrusted_LocalAttestation/UntrustedEnclaveMessageExchange.cpp

@@ -0,0 +1,194 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "sgx_eid.h"
+#include "error_codes.h"
+#include "datatypes.h"
+#include "sgx_urts.h"
+#include "UntrustedEnclaveMessageExchange.h"
+#include "sgx_dh.h"
+#include <map>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+std::map<sgx_enclave_id_t, uint32_t>g_enclave_id_map;
+
+//Makes an sgx_ecall to the destination enclave to get session id and message1
+ATTESTATION_STATUS session_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, sgx_dh_msg1_t* dh_msg1, uint32_t* session_id)
+{
+	uint32_t status = 0;
+	sgx_status_t ret = SGX_SUCCESS;
+
+    // wait for Enclave2 to fill msg1
+    printf("[OCALL IPC] Waiting for Enclave2 to generate SessionID and message1...\n");
+    sleep(5);
+
+    printf("[OCALL IPC] SessionID and message1 should be ready\n");
+
+    // for session id
+    printf("[OCALL IPC] Retriving SessionID from shared memory\n");
+    key_t key_session_id = ftok("../..", 3);
+    int shmid_session_id = shmget(key_session_id, sizeof(uint32_t), 0666|IPC_CREAT);
+    uint32_t* tmp_session_id = (uint32_t*)shmat(shmid_session_id, (void*)0, 0);
+    memcpy(session_id, tmp_session_id, sizeof(uint32_t));
+    shmdt(tmp_session_id);
+
+    // for msg1
+    printf("[OCALL IPC] Retriving message1 from shared memory\n");
+    key_t key_msg1 = ftok("../..", 2);
+    int shmid_msg1 = shmget(key_msg1, sizeof(sgx_dh_msg1_t), 0666|IPC_CREAT);
+    sgx_dh_msg1_t *tmp_msg1 = (sgx_dh_msg1_t*)shmat(shmid_msg1, (void*)0, 0);
+    memcpy(dh_msg1, tmp_msg1, sizeof(sgx_dh_msg1_t));
+    shmdt(tmp_msg1);
+
+    ret = SGX_SUCCESS;
+
+	if (ret == SGX_SUCCESS)
+		return SUCCESS;
+	else
+	    return INVALID_SESSION;
+
+}
+//Makes an sgx_ecall to the destination enclave sends message2 from the source enclave and gets message 3 from the destination enclave
+ATTESTATION_STATUS exchange_report_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, sgx_dh_msg2_t *dh_msg2, sgx_dh_msg3_t *dh_msg3, uint32_t session_id)
+{
+	uint32_t status = 0;
+	sgx_status_t ret = SGX_SUCCESS;
+
+    // for msg2 (filled by Enclave1)
+    printf("[OCALL IPC] Passing message2 to shared memory for Enclave2\n");
+    key_t key_msg2 = ftok("../..", 4);
+    int shmid_msg2 = shmget(key_msg2, sizeof(sgx_dh_msg2_t), 0666|IPC_CREAT);
+    sgx_dh_msg2_t *tmp_msg2 = (sgx_dh_msg2_t*)shmat(shmid_msg2, (void*)0, 0);
+    memcpy(tmp_msg2, dh_msg2, sizeof(sgx_dh_msg2_t));
+    shmdt(tmp_msg2);
+
+    // wait for Enclave2 to process msg2
+    printf("[OCALL IPC] Waiting for Enclave2 to process message2 and generate message3...\n");
+    sleep(5);
+
+    // retrieve msg3 (filled by Enclave2)
+    printf("[OCALL IPC] Message3 should be ready\n");
+    printf("[OCALL IPC] Retrieving message3 from shared memory\n");
+    key_t key_msg3 = ftok("../..", 5);
+    int shmid_msg3 = shmget(key_msg3, sizeof(sgx_dh_msg3_t), 0666|IPC_CREAT);
+    sgx_dh_msg3_t *tmp_msg3 = (sgx_dh_msg3_t*)shmat(shmid_msg3, (void*)0, 0);
+    memcpy(dh_msg3, tmp_msg3, sizeof(sgx_dh_msg3_t));
+    shmdt(tmp_msg3);
+
+    ret = SGX_SUCCESS;
+	if (ret == SGX_SUCCESS)
+		return SUCCESS;
+	else
+	    return INVALID_SESSION;
+
+}
+
+//Make an sgx_ecall to the destination enclave function that generates the actual response
+ATTESTATION_STATUS send_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id,secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, secure_message_t* resp_message, size_t resp_message_size)
+{
+	uint32_t status = 0;
+    sgx_status_t ret = SGX_SUCCESS;
+	uint32_t temp_enclave_no;
+
+	std::map<sgx_enclave_id_t, uint32_t>::iterator it = g_enclave_id_map.find(dest_enclave_id);
+    if(it != g_enclave_id_map.end())
+	{
+		temp_enclave_no = it->second;
+	}
+    else
+	{
+		return INVALID_SESSION;
+	}
+
+	switch(temp_enclave_no)
+	{
+		case 1:
+			ret = Enclave1_generate_response(dest_enclave_id, &status, src_enclave_id, req_message, req_message_size, max_payload_size, resp_message, resp_message_size);
+			break;
+		case 2:
+			ret = Enclave2_generate_response(dest_enclave_id, &status, src_enclave_id, req_message, req_message_size, max_payload_size, resp_message, resp_message_size);
+			break;
+		case 3:
+			ret = Enclave3_generate_response(dest_enclave_id, &status, src_enclave_id, req_message, req_message_size, max_payload_size, resp_message, resp_message_size);
+			break;
+	}
+	if (ret == SGX_SUCCESS)
+		return (ATTESTATION_STATUS)status;
+	else
+	    return INVALID_SESSION;
+
+}
+
+//Make an sgx_ecall to the destination enclave to close the session
+ATTESTATION_STATUS end_session_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id)
+{
+	uint32_t status = 0;
+	sgx_status_t ret = SGX_SUCCESS;
+	uint32_t temp_enclave_no;
+
+	std::map<sgx_enclave_id_t, uint32_t>::iterator it = g_enclave_id_map.find(dest_enclave_id);
+    if(it != g_enclave_id_map.end())
+	{
+		temp_enclave_no = it->second;
+	}
+    else
+	{
+		return INVALID_SESSION;
+	}
+
+	switch(temp_enclave_no)
+	{
+		case 1:
+			ret = Enclave1_end_session(dest_enclave_id, &status, src_enclave_id);
+			break;
+		case 2:
+			ret = Enclave2_end_session(dest_enclave_id, &status, src_enclave_id);
+			break;
+		case 3:
+			ret = Enclave3_end_session(dest_enclave_id, &status, src_enclave_id);
+			break;
+	}
+	if (ret == SGX_SUCCESS)
+		return (ATTESTATION_STATUS)status;
+	else
+	    return INVALID_SESSION;
+
+}
+
+void ocall_print_string(const char *str)
+{
+    printf("%s", str);
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave1/Untrusted_LocalAttestation/UntrustedEnclaveMessageExchange.h

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "sgx_eid.h"
+#include "error_codes.h"
+#include "datatypes.h"
+#include "sgx_urts.h"
+#include "dh_session_protocol.h"
+#include "sgx_dh.h"
+#include <cstddef>
+
+
+#ifndef ULOCALATTESTATION_H_
+#define ULOCALATTESTATION_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+sgx_status_t Enclave1_session_request(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg1_t* dh_msg1, uint32_t* session_id);
+sgx_status_t Enclave1_exchange_report(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg2_t* dh_msg2, sgx_dh_msg3_t* dh_msg3, uint32_t session_id);
+sgx_status_t Enclave1_generate_response(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, secure_message_t* resp_message, size_t resp_message_size);
+sgx_status_t Enclave1_end_session(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id);
+
+sgx_status_t Enclave2_session_request(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg1_t* dh_msg1, uint32_t* session_id);
+sgx_status_t Enclave2_exchange_report(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg2_t* dh_msg2, sgx_dh_msg3_t* dh_msg3, uint32_t session_id);
+sgx_status_t Enclave2_generate_response(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, secure_message_t* resp_message, size_t resp_message_size);
+sgx_status_t Enclave2_end_session(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id);
+
+sgx_status_t Enclave3_session_request(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg1_t* dh_msg1, uint32_t* session_id);
+sgx_status_t Enclave3_exchange_report(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg2_t* dh_msg2, sgx_dh_msg3_t* dh_msg3, uint32_t session_id);
+sgx_status_t Enclave3_generate_response(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, secure_message_t* resp_message, size_t resp_message_size);
+sgx_status_t Enclave3_end_session(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id);
+
+uint32_t session_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, sgx_dh_msg1_t* dh_msg1, uint32_t* session_id);
+uint32_t exchange_report_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, sgx_dh_msg2_t* dh_msg2, sgx_dh_msg3_t* dh_msg3, uint32_t session_id);
+uint32_t send_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, secure_message_t* resp_message, size_t resp_message_size);
+uint32_t end_session_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+void ocall_print_string(const char *str);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/.cproject

@@ -0,0 +1,216 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?fileVersion 4.0.0?><cproject storage_type_id="org.eclipse.cdt.core.XmlProjectDescriptionStorage">
+	<storageModule moduleId="org.eclipse.cdt.core.settings">
+		<cconfiguration id="com.intel.sgx.configuration.Sim.Debug">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.intel.sgx.configuration.Sim.Debug" moduleId="org.eclipse.cdt.core.settings" name="Intel(R) SGX Simulation Debug">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.autotools.core.ErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildProperties="" description="" id="com.intel.sgx.configuration.Sim.Debug" name="Intel(R) SGX Simulation Debug" parent="com.intel.sgx.configuration.Sim.Debug">
+					<folderInfo id="com.intel.sgx.configuration.Sim.Debug.935873960" name="/" resourcePath="">
+						<toolChain id="com.intel.sgx.toolChain.Sim.Debug.2132595457" name="Intel(R) SGX" superClass="com.intel.sgx.toolChain.Sim.Debug">
+							<targetPlatform binaryParser="org.eclipse.cdt.core.ELF" id="com.intel.sgx.targetEnclave.1678491512" isAbstract="false" superClass="com.intel.sgx.targetEnclave"/>
+							<builder arguments="SGX_DEBUG=1 SGX_MODE=SIM -f Makefile" command="make" id="com.intel.sgx.builder2.229166714" keepEnvironmentInBuildfile="false" name="Intel(R) Software Guard Extensions Linux Builder" superClass="com.intel.sgx.builder2"/>
+							<tool id="com.intel.sgx.compiler.81269967" name="Intel(R) SGX" superClass="com.intel.sgx.compiler">
+								<option id="com.intel.sgx.option.includePath.1694375039" superClass="com.intel.sgx.option.includePath" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${SGX_SDK}/include&quot;"/>
+								</option>
+								<inputType id="com.intel.sgx.inputType.742388855" superClass="com.intel.sgx.inputType"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+		<cconfiguration id="com.intel.sgx.configuration.Sim.Release">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.intel.sgx.configuration.Sim.Release" moduleId="org.eclipse.cdt.core.settings" name="Intel(R) SGX Simulation">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.autotools.core.ErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildProperties="" description="" id="com.intel.sgx.configuration.Sim.Release" name="Intel(R) SGX Simulation" parent="com.intel.sgx.configuration.Sim.Release">
+					<folderInfo id="com.intel.sgx.configuration.Sim.Release.428839196" name="/" resourcePath="">
+						<toolChain id="com.intel.sgx.toolChain.Sim.Release.709775329" name="Intel(R) SGX" superClass="com.intel.sgx.toolChain.Sim.Release">
+							<targetPlatform binaryParser="org.eclipse.cdt.core.ELF" id="com.intel.sgx.targetEnclave.1866379479" isAbstract="false" superClass="com.intel.sgx.targetEnclave"/>
+							<builder arguments="SGX_DEBUG=0 SGX_MODE=SIM -f Makefile" command="make" id="com.intel.sgx.builder3.1000705250" keepEnvironmentInBuildfile="false" name="Intel(R) Software Guard Extensions Linux Builder" superClass="com.intel.sgx.builder3"/>
+							<tool id="com.intel.sgx.compiler.301453474" name="Intel(R) SGX" superClass="com.intel.sgx.compiler">
+								<option id="com.intel.sgx.option.includePath.1312096753" superClass="com.intel.sgx.option.includePath" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${SGX_SDK}/include&quot;"/>
+								</option>
+								<inputType id="com.intel.sgx.inputType.596141238" superClass="com.intel.sgx.inputType"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+		<cconfiguration id="com.intel.sgx.configuration.HW.Debug">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.intel.sgx.configuration.HW.Debug" moduleId="org.eclipse.cdt.core.settings" name="Intel(R) SGX Hardware Debug">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.autotools.core.ErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildProperties="" description="" id="com.intel.sgx.configuration.HW.Debug" name="Intel(R) SGX Hardware Debug" parent="com.intel.sgx.configuration.HW.Debug">
+					<folderInfo id="com.intel.sgx.configuration.HW.Debug.562917509" name="/" resourcePath="">
+						<toolChain id="com.intel.sgx.toolChain.HW.Debug.2046051538" name="Intel(R) SGX" superClass="com.intel.sgx.toolChain.HW.Debug">
+							<targetPlatform binaryParser="org.eclipse.cdt.core.ELF" id="com.intel.sgx.targetEnclave.999277922" isAbstract="false" superClass="com.intel.sgx.targetEnclave"/>
+							<builder arguments="SGX_DEBUG=1 SGX_MODE=HW -f Makefile" command="make" id="com.intel.sgx.builder1.577701014" keepEnvironmentInBuildfile="false" name="Intel(R) Software Guard Extensions Linux Builder" superClass="com.intel.sgx.builder1"/>
+							<tool id="com.intel.sgx.compiler.1898704176" name="Intel(R) SGX" superClass="com.intel.sgx.compiler">
+								<option id="com.intel.sgx.option.includePath.1026657138" superClass="com.intel.sgx.option.includePath" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${SGX_SDK}/include&quot;"/>
+								</option>
+								<inputType id="com.intel.sgx.inputType.393162412" superClass="com.intel.sgx.inputType"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+		<cconfiguration id="com.intel.sgx.configuration.HW.Prerelease">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.intel.sgx.configuration.HW.Prerelease" moduleId="org.eclipse.cdt.core.settings" name="Intel(R) SGX Hardware Prerelease">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.autotools.core.ErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildProperties="" description="" id="com.intel.sgx.configuration.HW.Prerelease" name="Intel(R) SGX Hardware Prerelease" parent="com.intel.sgx.configuration.HW.Prerelease">
+					<folderInfo id="com.intel.sgx.configuration.HW.Prerelease.2074448686" name="/" resourcePath="">
+						<toolChain id="com.intel.sgx.toolChain.HW.Prerelease.2016152654" name="Intel(R) SGX" superClass="com.intel.sgx.toolChain.HW.Prerelease">
+							<targetPlatform binaryParser="org.eclipse.cdt.core.ELF" id="com.intel.sgx.targetEnclave.1520324017" isAbstract="false" superClass="com.intel.sgx.targetEnclave"/>
+							<builder arguments="SGX_PRERELEASE=1 SGX_MODE=HW -f Makefile" command="make" id="com.intel.sgx.builder5.293910513" keepEnvironmentInBuildfile="false" name="Intel(R) Software Guard Extensions Linux Builder" superClass="com.intel.sgx.builder5"/>
+							<tool id="com.intel.sgx.compiler.845441552" name="Intel(R) SGX" superClass="com.intel.sgx.compiler">
+								<option id="com.intel.sgx.option.includePath.199398937" superClass="com.intel.sgx.option.includePath" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${SGX_SDK}/include&quot;"/>
+								</option>
+								<inputType id="com.intel.sgx.inputType.1555926498" superClass="com.intel.sgx.inputType"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+		<cconfiguration id="com.intel.sgx.configuration.HW.Release">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.intel.sgx.configuration.HW.Release" moduleId="org.eclipse.cdt.core.settings" name="Intel(R) SGX Hardware Release">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.autotools.core.ErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildProperties="" description="" id="com.intel.sgx.configuration.HW.Release" name="Intel(R) SGX Hardware Release" parent="com.intel.sgx.configuration.HW.Release">
+					<folderInfo id="com.intel.sgx.configuration.HW.Release.1347223665" name="/" resourcePath="">
+						<toolChain id="com.intel.sgx.toolChain.HW.Release.1050674831" name="Intel(R) SGX" superClass="com.intel.sgx.toolChain.HW.Release">
+							<targetPlatform binaryParser="org.eclipse.cdt.core.ELF" id="com.intel.sgx.targetEnclave.987781695" isAbstract="false" superClass="com.intel.sgx.targetEnclave"/>
+							<builder arguments="SGX_DEBUG=0 SGX_MODE=HW -f Makefile" command="make" id="com.intel.sgx.builder6.484951388" keepEnvironmentInBuildfile="false" name="Intel(R) Software Guard Extensions Linux Builder" superClass="com.intel.sgx.builder6"/>
+							<tool id="com.intel.sgx.compiler.945246695" name="Intel(R) SGX" superClass="com.intel.sgx.compiler">
+								<option id="com.intel.sgx.option.includePath.119487102" superClass="com.intel.sgx.option.includePath" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${SGX_SDK}/include&quot;"/>
+								</option>
+								<inputType id="com.intel.sgx.inputType.593431891" superClass="com.intel.sgx.inputType"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+	</storageModule>
+	<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+		<project id="LocalAttestation.cdt.managedbuild.target.gnu.exe.872917958" name="Executable" projectType="cdt.managedbuild.target.gnu.exe"/>
+	</storageModule>
+	<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
+	<storageModule moduleId="refreshScope" versionNumber="2">
+		<configuration configurationName="Intel(R) SGX Hardware Debug">
+			<resource resourceType="PROJECT" workspacePath="/LocalAttestation"/>
+		</configuration>
+		<configuration configurationName="Intel(R) SGX Simulation Debug">
+			<resource resourceType="PROJECT" workspacePath="/LocalAttestation"/>
+		</configuration>
+		<configuration configurationName="Intel(R) SGX Hardware Prerelease">
+			<resource resourceType="PROJECT" workspacePath="/LocalAttestation"/>
+		</configuration>
+		<configuration configurationName="Intel(R) SGX Simulation">
+			<resource resourceType="PROJECT" workspacePath="/LocalAttestation"/>
+		</configuration>
+		<configuration configurationName="Intel(R) SGX Hardware Release">
+			<resource resourceType="PROJECT" workspacePath="/LocalAttestation"/>
+		</configuration>
+	</storageModule>
+	<storageModule moduleId="scannerConfiguration">
+		<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+		<scannerConfigBuildInfo instanceId="com.intel.sgx.configuration.HW.Release;com.intel.sgx.configuration.HW.Release.1347223665;com.intel.sgx.compiler.945246695;com.intel.sgx.inputType.593431891">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="com.intel.sgx.SGXPerProjectProfile"/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="com.intel.sgx.configuration.Sim.Debug;com.intel.sgx.configuration.Sim.Debug.935873960;com.intel.sgx.compiler.81269967;com.intel.sgx.inputType.742388855">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="com.intel.sgx.SGXPerProjectProfile"/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="com.intel.sgx.configuration.Sim.Release;com.intel.sgx.configuration.Sim.Release.428839196;com.intel.sgx.compiler.301453474;com.intel.sgx.inputType.596141238">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="com.intel.sgx.SGXPerProjectProfile"/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.exe.debug.1609650460;cdt.managedbuild.config.gnu.exe.debug.1609650460.;cdt.managedbuild.tool.gnu.c.compiler.exe.debug.1644119147;cdt.managedbuild.tool.gnu.c.compiler.input.938348551">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.exe.release.1394873887;cdt.managedbuild.config.gnu.exe.release.1394873887.;cdt.managedbuild.tool.gnu.c.compiler.exe.release.2035356548;cdt.managedbuild.tool.gnu.c.compiler.input.793813290">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="com.intel.sgx.configuration.HW.Debug;com.intel.sgx.configuration.HW.Debug.562917509;com.intel.sgx.compiler.1898704176;com.intel.sgx.inputType.393162412">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="com.intel.sgx.SGXPerProjectProfile"/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="com.intel.sgx.configuration.HW.Prerelease;com.intel.sgx.configuration.HW.Prerelease.2074448686;com.intel.sgx.compiler.845441552;com.intel.sgx.inputType.1555926498">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="com.intel.sgx.SGXPerProjectProfile"/>
+		</scannerConfigBuildInfo>
+	</storageModule>
+	<storageModule moduleId="org.eclipse.cdt.internal.ui.text.commentOwnerProjectMappings"/>
+</cproject>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/.project

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>LocalAttestation</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
+			<triggers>clean,full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
+			<triggers>full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.cdt.core.cnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+		<nature>org.eclipse.cdt.core.ccnature</nature>
+		<nature>com.intel.sgx.sgxnature</nature>
+	</natures>
+</projectDescription>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/.settings/language.settings.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<project>
+	<configuration id="com.intel.sgx.configuration.Sim.Debug" name="Intel(R) SGX Simulation Debug">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
+				<resource project-relative-path="">
+					<entry kind="includePath" name="${SGX_SDK}/include">
+						<flag value="LOCAL"/>
+					</entry>
+				</resource>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetector" ref="shared-provider"/>
+		</extension>
+	</configuration>
+	<configuration id="com.intel.sgx.configuration.Sim.Release" name="Intel(R) SGX Simulation">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
+				<resource project-relative-path="">
+					<entry kind="includePath" name="${SGX_SDK}/include">
+						<flag value="LOCAL"/>
+					</entry>
+				</resource>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetector" ref="shared-provider"/>
+		</extension>
+	</configuration>
+	<configuration id="com.intel.sgx.configuration.HW.Debug" name="Intel(R) SGX Hardware Debug">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
+				<resource project-relative-path="">
+					<entry kind="includePath" name="${SGX_SDK}/include">
+						<flag value="LOCAL"/>
+					</entry>
+				</resource>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetector" ref="shared-provider"/>
+		</extension>
+	</configuration>
+	<configuration id="com.intel.sgx.configuration.HW.Prerelease" name="Intel(R) SGX Hardware Prerelease">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
+				<resource project-relative-path="">
+					<entry kind="includePath" name="${SGX_SDK}/include">
+						<flag value="LOCAL"/>
+					</entry>
+				</resource>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetector" ref="shared-provider"/>
+		</extension>
+	</configuration>
+	<configuration id="com.intel.sgx.configuration.HW.Release" name="Intel(R) SGX Hardware Release">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider class="org.eclipse.cdt.core.language.settings.providers.LanguageSettingsGenericProvider" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider" name="CDT User Setting Entries" prefer-non-shared="true" store-entries-with-project="true">
+				<resource project-relative-path="">
+					<entry kind="includePath" name="${SGX_SDK}/include">
+						<flag value="LOCAL"/>
+					</entry>
+				</resource>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetector" ref="shared-provider"/>
+		</extension>
+	</configuration>
+</project>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/App/App.cpp

@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+// App.cpp : Defines the entry point for the console application.
+#include <stdio.h>
+#include <map>
+#include "../Enclave1/Enclave1_u.h"
+#include "../Enclave2/Enclave2_u.h"
+#include "../Enclave3/Enclave3_u.h"
+#include "sgx_eid.h"
+#include "sgx_urts.h"
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
+
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <unistd.h>
+
+#define UNUSED(val) (void)(val)
+#define TCHAR   char
+#define _TCHAR  char
+#define _T(str) str
+#define scanf_s scanf
+#define _tmain  main
+
+extern std::map<sgx_enclave_id_t, uint32_t>g_enclave_id_map;
+
+
+sgx_enclave_id_t e1_enclave_id = 0;
+sgx_enclave_id_t e2_enclave_id = 0;
+sgx_enclave_id_t e3_enclave_id = 0;
+
+#define ENCLAVE1_PATH "libenclave1.so"
+#define ENCLAVE2_PATH "libenclave2.so"
+#define ENCLAVE3_PATH "libenclave3.so"
+
+void waitForKeyPress()
+{
+    char ch;
+    int temp;
+    printf("\n\nHit a key....\n");
+    temp = scanf_s("%c", &ch);
+}
+
+uint32_t load_enclaves()
+{
+    uint32_t enclave_temp_no;
+    int ret, launch_token_updated;
+    sgx_launch_token_t launch_token;
+
+    enclave_temp_no = 0;
+
+    ret = sgx_create_enclave(ENCLAVE1_PATH, SGX_DEBUG_FLAG, &launch_token, &launch_token_updated, &e1_enclave_id, NULL);
+    if (ret != SGX_SUCCESS) {
+                return ret;
+    }
+
+    enclave_temp_no++;
+    g_enclave_id_map.insert(std::pair<sgx_enclave_id_t, uint32_t>(e1_enclave_id, enclave_temp_no));
+
+    return SGX_SUCCESS;
+}
+
+int _tmain(int argc, _TCHAR* argv[])
+{
+    uint32_t ret_status;
+    sgx_status_t status;
+
+    UNUSED(argc);
+    UNUSED(argv);
+
+    if(load_enclaves() != SGX_SUCCESS)
+    {
+        printf("\nLoad Enclave Failure");
+    }
+
+    //printf("\nAvailable Enclaves");
+    //printf("\nEnclave1 - EnclaveID %" PRIx64 "\n", e1_enclave_id);
+
+    // shared memory between Enlave1 and Enclave2 to pass data
+    key_t key = ftok("../..", 1);
+    int shmid = shmget(key, 1024, 0666 | IPC_CREAT);
+    char *str = (char*)shmat(shmid, (void*)0, 0);
+
+    printf("[TEST IPC] Receiving from Enclave1: %s", str);
+
+    shmdt(str);
+    shmctl(shmid, IPC_RMID, NULL);
+
+    do
+    {
+        printf("[START] Testing create session between Enclave1 (Initiator) and Enclave2 (Responder)\n");
+        status = Enclave1_test_create_session(e1_enclave_id, &ret_status, e1_enclave_id, 0);
+        if (status!=SGX_SUCCESS)
+        {
+            printf("[END] test_create_session Ecall failed: Error code is %x\n", status);
+            break;
+        }
+        else
+        {
+            if(ret_status==0)
+            {
+                printf("[END] Secure Channel Establishment between Initiator (E1) and Responder (E2) Enclaves successful !!!\n");
+            }
+            else
+            {
+                printf("[END] Session establishment and key exchange failure between Initiator (E1) and Responder (E2): Error code is %x\n", ret_status);
+                break;
+            }
+        }
+
+#pragma warning (push)
+#pragma warning (disable : 4127)
+    }while(0);
+#pragma warning (pop)
+
+    sgx_destroy_enclave(e1_enclave_id);
+
+    waitForKeyPress();
+
+    return 0;
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave1/Enclave1.config.xml

@@ -0,0 +1,12 @@
+<EnclaveConfiguration> 
+  <ProdID>0</ProdID> 
+  <ISVSVN>0</ISVSVN> 
+  <StackMaxSize>0x40000</StackMaxSize> 
+  <HeapMaxSize>0x100000</HeapMaxSize> 
+  <TCSNum>1</TCSNum> 
+  <TCSPolicy>1</TCSPolicy> 
+  <!-- Recommend changing 'DisableDebug' to 1 to make the enclave undebuggable for enclave release -->
+  <DisableDebug>0</DisableDebug> 
+  <MiscSelect>0</MiscSelect>
+  <MiscMask>0xFFFFFFFF</MiscMask>
+</EnclaveConfiguration>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave1/Enclave1.cpp

@@ -0,0 +1,367 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+// Enclave1.cpp : Defines the exported functions for the .so application
+#include "sgx_eid.h"
+#include "Enclave1_t.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E1.h"
+#include "sgx_thread.h"
+#include "sgx_dh.h"
+#include <map>
+
+#define UNUSED(val) (void)(val)
+
+std::map<sgx_enclave_id_t, dh_session_t>g_src_session_info_map;
+
+static uint32_t e1_foo1_wrapper(ms_in_msg_exchange_t *ms, size_t param_lenth, char** resp_buffer, size_t* resp_length);
+
+//Function pointer table containing the list of functions that the enclave exposes
+const struct {
+    size_t num_funcs;
+    const void* table[1];
+} func_table = {
+    1,
+    {
+        (const void*)e1_foo1_wrapper,
+    }
+};
+
+//Makes use of the sample code function to establish a secure channel with the destination enclave (Test Vector)
+uint32_t test_create_session(sgx_enclave_id_t src_enclave_id,
+                         sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    dh_session_t dest_session_info;
+
+    //Core reference code function for creating a session
+    ke_status = create_session(src_enclave_id, dest_enclave_id, &dest_session_info);
+
+    return ke_status;
+}
+
+//Makes use of the sample code function to do an enclave to enclave call (Test Vector)
+uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id,
+                                          sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    uint32_t var1,var2;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* retval;
+
+    var1 = 0x4;
+    var2 = 0x5;
+    target_fn_id = 0;
+    msg_type = ENCLAVE_TO_ENCLAVE_CALL;
+    max_out_buff_size = 50;
+
+    //Marshals the input parameters for calling function foo1 in Enclave2 into a input buffer
+    ke_status = marshal_input_parameters_e2_foo1(target_fn_id, msg_type, var1, var2, &marshalled_inp_buff, &marshalled_inp_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+
+    //Search the map for the session information associated with the destination enclave id of Enclave2 passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+          dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info, marshalled_inp_buff,
+                                            marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+
+
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    //Un-marshal the return value and output parameters from foo1 of Enclave 2
+    ke_status = unmarshal_retval_and_output_parameters_e2_foo1(out_buff, &retval);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(retval);
+    return SUCCESS;
+}
+
+//Makes use of the sample code function to do a generic secret message exchange (Test Vector)
+uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id,
+                               sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* secret_response;
+    uint32_t secret_data;
+
+    target_fn_id = 0;
+    msg_type = MESSAGE_EXCHANGE;
+    max_out_buff_size = 50;
+    secret_data = 0x12345678; //Secret Data here is shown only for purpose of demonstration.
+
+    //Marshals the secret data into a buffer
+    ke_status = marshal_message_exchange_request(target_fn_id, msg_type, secret_data, &marshalled_inp_buff, &marshalled_inp_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+         dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info, marshalled_inp_buff,
+                                                marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    //Un-marshal the secret response data
+    ke_status = umarshal_message_exchange_response(out_buff, &secret_response);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(secret_response);
+    return SUCCESS;
+}
+
+
+//Makes use of the sample code function to close a current session
+uint32_t test_close_session(sgx_enclave_id_t src_enclave_id,
+                                sgx_enclave_id_t dest_enclave_id)
+{
+    dh_session_t dest_session_info;
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+        dest_session_info = it->second;
+    }
+    else
+    {
+        return NULL;
+    }
+
+    //Core reference code function for closing a session
+    ke_status = close_session(src_enclave_id, dest_enclave_id);
+
+    //Erase the session information associated with the destination enclave id
+    g_src_session_info_map.erase(dest_enclave_id);
+    return ke_status;
+}
+
+//Function that is used to verify the trust of the other enclave
+//Each enclave can have its own way verifying the peer enclave identity
+extern "C" uint32_t verify_peer_enclave_trust(sgx_dh_session_enclave_identity_t* peer_enclave_identity)
+{
+    if(!peer_enclave_identity)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    if(peer_enclave_identity->isv_prod_id != 0 || !(peer_enclave_identity->attributes.flags & SGX_FLAGS_INITTED))
+        // || peer_enclave_identity->attributes.xfrm !=3)// || peer_enclave_identity->mr_signer != xx //TODO: To be hardcoded with values to check
+    {
+        return ENCLAVE_TRUST_ERROR;
+    }
+    else
+    {
+        return SUCCESS;
+    }
+}
+
+
+//Dispatcher function that calls the approriate enclave function based on the function id
+//Each enclave can have its own way of dispatching the calls from other enclave
+extern "C" uint32_t enclave_to_enclave_call_dispatcher(char* decrypted_data,
+                                                       size_t decrypted_data_length,
+                                                       char** resp_buffer,
+                                                       size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t (*fn1)(ms_in_msg_exchange_t *ms, size_t, char**, size_t*);
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+    if(ms->target_fn_id >= func_table.num_funcs)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    fn1 = (uint32_t (*)(ms_in_msg_exchange_t*, size_t, char**, size_t*))func_table.table[ms->target_fn_id];
+    return fn1(ms, decrypted_data_length, resp_buffer, resp_length);
+}
+
+//Operates on the input secret and generates the output secret
+uint32_t get_message_exchange_response(uint32_t inp_secret_data)
+{
+    uint32_t secret_response;
+
+    //User should use more complex encryption method to protect their secret, below is just a simple example
+    secret_response = inp_secret_data & 0x11111111;
+
+    return secret_response;
+
+}
+
+//Generates the response from the request message
+extern "C" uint32_t message_exchange_response_generator(char* decrypted_data,
+                                              char** resp_buffer,
+                                              size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t inp_secret_data;
+    uint32_t out_secret_data;
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+
+    if(umarshal_message_exchange_request(&inp_secret_data,ms) != SUCCESS)
+        return ATTESTATION_ERROR;
+
+    out_secret_data = get_message_exchange_response(inp_secret_data);
+
+    if(marshal_message_exchange_response(resp_buffer, resp_length, out_secret_data) != SUCCESS)
+        return MALLOC_ERROR;
+
+    return SUCCESS;
+
+}
+
+
+static uint32_t e1_foo1(external_param_struct_t *p_struct_var)
+{
+    if(!p_struct_var)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    (p_struct_var->var1)++;
+    (p_struct_var->var2)++;
+    (p_struct_var->p_internal_struct->ivar1)++;
+    (p_struct_var->p_internal_struct->ivar2)++;
+
+    return (p_struct_var->var1 + p_struct_var->var2 + p_struct_var->p_internal_struct->ivar1 + p_struct_var->p_internal_struct->ivar2);
+}
+
+//Function which is executed on request from the source enclave
+static uint32_t e1_foo1_wrapper(ms_in_msg_exchange_t *ms,
+                    size_t param_lenth,
+                    char** resp_buffer,
+                    size_t* resp_length)
+{
+    UNUSED(param_lenth);
+
+    uint32_t ret;
+    size_t len_data, len_ptr_data;
+    external_param_struct_t *p_struct_var;
+    internal_param_struct_t internal_struct_var;
+
+    if(!ms || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    p_struct_var = (external_param_struct_t*)malloc(sizeof(external_param_struct_t));
+    if(!p_struct_var)
+        return MALLOC_ERROR;
+
+    p_struct_var->p_internal_struct = &internal_struct_var;
+
+    if(unmarshal_input_parameters_e1_foo1(p_struct_var, ms) != SUCCESS)//can use the stack
+    {
+        SAFE_FREE(p_struct_var);
+        return ATTESTATION_ERROR;
+    }
+
+    ret = e1_foo1(p_struct_var);
+
+    len_data = sizeof(external_param_struct_t) - sizeof(p_struct_var->p_internal_struct);
+    len_ptr_data = sizeof(internal_struct_var);
+
+    if(marshal_retval_and_output_parameters_e1_foo1(resp_buffer, resp_length, ret, p_struct_var, len_data, len_ptr_data) != SUCCESS)
+    {
+        SAFE_FREE(p_struct_var);
+        return MALLOC_ERROR;
+    }
+    SAFE_FREE(p_struct_var);
+    return SUCCESS;
+}
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave1/Enclave1.edl

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+enclave {
+    include "sgx_eid.h"
+    from "../LocalAttestationCode/LocalAttestationCode.edl" import *;
+    from "sgx_tstdc.edl" import *;
+    trusted{
+            public uint32_t test_create_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_close_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+    };
+
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave1/Enclave1.lds

@@ -0,0 +1,10 @@
+Enclave1.so
+{
+    global:
+        g_global_data_sim;
+        g_global_data;
+        enclave_entry;
+        g_peak_heap_used;
+    local:
+        *;
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave1/Enclave1_private.pem

@@ -0,0 +1,39 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave1/Utility_E1.cpp

@@ -0,0 +1,222 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "sgx_eid.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E1.h"
+#include "stdlib.h"
+#include "string.h"
+
+uint32_t marshal_input_parameters_e2_foo1(uint32_t target_fn_id, uint32_t msg_type, uint32_t var1, uint32_t var2, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t param_len, ms_len;
+    char *temp_buff;
+        
+    param_len = sizeof(var1)+sizeof(var2);
+    temp_buff = (char*)malloc(param_len);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+
+    memcpy(temp_buff,&var1,sizeof(var1));
+    memcpy(temp_buff+sizeof(var1),&var2,sizeof(var2));
+    ms_len = sizeof(ms_in_msg_exchange_t) + param_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)param_len;
+    memcpy(&ms->inparam_buff, temp_buff, param_len);
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t unmarshal_retval_and_output_parameters_e2_foo1(char* out_buff, char** retval)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff)
+        return INVALID_PARAMETER_ERROR;
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *retval = (char*)malloc(retval_len);
+    if(!*retval)
+        return MALLOC_ERROR;
+
+    memcpy(*retval, ms->ret_outparam_buff, retval_len);
+    return SUCCESS;
+}
+
+uint32_t unmarshal_input_parameters_e1_foo1(external_param_struct_t *pstruct, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!pstruct || !ms)
+        return INVALID_PARAMETER_ERROR;
+
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+    if(len != (sizeof(pstruct->var1)+sizeof(pstruct->var2)+sizeof(pstruct->p_internal_struct->ivar1)+sizeof(pstruct->p_internal_struct->ivar2)))
+        return ATTESTATION_ERROR;
+
+    memcpy(&pstruct->var1, buff, sizeof(pstruct->var1));
+    memcpy(&pstruct->var2, buff + sizeof(pstruct->var1), sizeof(pstruct->var2));
+    memcpy(&pstruct->p_internal_struct->ivar1, buff+(sizeof(pstruct->var1)+sizeof(pstruct->var2)), sizeof(pstruct->p_internal_struct->ivar1)); 
+    memcpy(&pstruct->p_internal_struct->ivar2, buff+(sizeof(pstruct->var1)+sizeof(pstruct->var2)+sizeof(pstruct->p_internal_struct->ivar1)), sizeof(pstruct->p_internal_struct->ivar2));
+
+    return SUCCESS;
+}
+
+uint32_t marshal_retval_and_output_parameters_e1_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval, external_param_struct_t *p_struct_var, size_t len_data, size_t len_ptr_data)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t param_len, ms_len, ret_param_len;;
+    char *temp_buff;
+    int* addr;
+    char* struct_data;
+    size_t retval_len;
+    
+    if(!resp_length || !p_struct_var)
+        return INVALID_PARAMETER_ERROR;
+
+    retval_len = sizeof(retval);
+    struct_data = (char*)p_struct_var;    
+    param_len = len_data + len_ptr_data;
+    ret_param_len = param_len + retval_len;
+    addr = *(int **)(struct_data + len_data);
+    temp_buff = (char*)malloc(ret_param_len);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+
+    memcpy(temp_buff, &retval, sizeof(retval)); 
+    memcpy(temp_buff + sizeof(retval), struct_data, len_data);
+    memcpy(temp_buff + sizeof(retval) + len_data, addr, len_ptr_data);
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, temp_buff, ret_param_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+    
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t secret_data_len, ms_len;
+    if(!marshalled_buff_len)
+        return INVALID_PARAMETER_ERROR;
+    secret_data_len = sizeof(secret_data);
+    ms_len = sizeof(ms_in_msg_exchange_t) + secret_data_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)secret_data_len;
+    memcpy(&ms->inparam_buff, &secret_data, secret_data_len);
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+     return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!inp_secret_data || !ms)
+        return INVALID_PARAMETER_ERROR;
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+    if(len != sizeof(uint32_t))
+        return ATTESTATION_ERROR;
+
+    memcpy(inp_secret_data, buff, sizeof(uint32_t));    
+
+    return SUCCESS;
+}
+
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t secret_response_len, ms_len;
+    size_t retval_len, ret_param_len;
+    if(!resp_length)
+        return INVALID_PARAMETER_ERROR;
+    secret_response_len = sizeof(secret_response);
+    retval_len = secret_response_len;
+    ret_param_len = secret_response_len;
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, &secret_response, secret_response_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+    return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff)
+        return INVALID_PARAMETER_ERROR;
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *secret_response = (char*)malloc(retval_len);
+    if(!*secret_response)
+    {
+        return MALLOC_ERROR;
+    }
+    memcpy(*secret_response, ms->ret_outparam_buff, retval_len);
+    return SUCCESS;
+}
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave1/Utility_E1.h

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef UTILITY_E1_H__
+#define UTILITY_E1_H__
+
+#include "stdint.h"
+
+typedef struct _internal_param_struct_t
+{
+    uint32_t ivar1;
+    uint32_t ivar2;
+}internal_param_struct_t;
+
+typedef struct _external_param_struct_t
+{
+    uint32_t var1;
+    uint32_t var2;
+    internal_param_struct_t *p_internal_struct;
+}external_param_struct_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint32_t marshal_input_parameters_e2_foo1(uint32_t target_fn_id, uint32_t msg_type, uint32_t var1, uint32_t var2, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t unmarshal_retval_and_output_parameters_e2_foo1(char* out_buff, char** retval);
+uint32_t unmarshal_input_parameters_e1_foo1(external_param_struct_t *pstruct, ms_in_msg_exchange_t* ms);
+uint32_t marshal_retval_and_output_parameters_e1_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval, external_param_struct_t *p_struct_var, size_t len_data, size_t len_ptr_data);
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms);
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response);
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response);
+#ifdef __cplusplus
+ }
+#endif
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave2/Enclave2.config.xml

@@ -0,0 +1,12 @@
+<EnclaveConfiguration> 
+  <ProdID>0</ProdID> 
+  <ISVSVN>0</ISVSVN> 
+  <StackMaxSize>0x40000</StackMaxSize> 
+  <HeapMaxSize>0x100000</HeapMaxSize> 
+  <TCSNum>1</TCSNum> 
+  <TCSPolicy>1</TCSPolicy>
+  <!-- Recommend changing 'DisableDebug' to 1 to make the enclave undebuggable for enclave release -->
+  <DisableDebug>0</DisableDebug>
+  <MiscSelect>0</MiscSelect>
+  <MiscMask>0xFFFFFFFF</MiscMask>
+</EnclaveConfiguration>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave2/Enclave2.cpp

@@ -0,0 +1,339 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+// Enclave2.cpp : Defines the exported functions for the DLL application
+#include "sgx_eid.h"
+#include "Enclave2_t.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E2.h"
+#include "sgx_thread.h"
+#include "sgx_dh.h"
+#include <map>
+
+#define UNUSED(val) (void)(val)
+
+std::map<sgx_enclave_id_t, dh_session_t>g_src_session_info_map;
+
+static uint32_t e2_foo1_wrapper(ms_in_msg_exchange_t *ms, size_t param_lenth, char** resp_buffer, size_t* resp_length);
+
+//Function pointer table containing the list of functions that the enclave exposes
+const struct {
+    size_t num_funcs;
+    const void* table[1];
+} func_table = {
+    1,
+    {
+        (const void*)e2_foo1_wrapper,
+    }
+};
+
+//Makes use of the sample code function to establish a secure channel with the destination enclave
+uint32_t test_create_session(sgx_enclave_id_t src_enclave_id,
+                          sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    dh_session_t dest_session_info;
+    //Core reference code function for creating a session
+    ke_status = create_session(src_enclave_id, dest_enclave_id,&dest_session_info);
+    if(ke_status == SUCCESS)
+    {
+        //Insert the session information into the map under the corresponding destination enclave id
+        g_src_session_info_map.insert(std::pair<sgx_enclave_id_t, dh_session_t>(dest_enclave_id, dest_session_info));
+    }
+    memset(&dest_session_info, 0, sizeof(dh_session_t));
+    return ke_status;
+}
+
+//Makes use of the sample code function to do an enclave to enclave call (Test Vector)
+uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id,
+                                          sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    param_struct_t *p_struct_var, struct_var;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* retval;
+
+    max_out_buff_size = 50;
+    target_fn_id = 0;
+    msg_type = ENCLAVE_TO_ENCLAVE_CALL;
+
+    struct_var.var1 = 0x3;
+    struct_var.var2 = 0x4;
+    p_struct_var = &struct_var;
+
+    //Marshals the input parameters for calling function foo1 in Enclave3 into a input buffer
+    ke_status = marshal_input_parameters_e3_foo1(target_fn_id, msg_type, p_struct_var, &marshalled_inp_buff, &marshalled_inp_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+         dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info, marshalled_inp_buff,
+                                               marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    //Un-marshal the return value and output parameters from foo1 of Enclave3
+    ke_status = unmarshal_retval_and_output_parameters_e3_foo1(out_buff, p_struct_var, &retval);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(retval);
+    return SUCCESS;
+}
+
+//Makes use of the sample code function to do a generic secret message exchange (Test Vector)
+uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id,
+                               sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* secret_response;
+    uint32_t secret_data;
+
+    target_fn_id = 0;
+    msg_type = MESSAGE_EXCHANGE;
+    max_out_buff_size = 50;
+    secret_data = 0x12345678; //Secret Data here is shown only for purpose of demonstration.
+
+    //Marshals the secret data into a buffer
+    ke_status = marshal_message_exchange_request(target_fn_id, msg_type, secret_data, &marshalled_inp_buff, &marshalled_inp_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+           dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info, marshalled_inp_buff,
+                                                marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    //Un-marshal the secret response data
+    ke_status = umarshal_message_exchange_response(out_buff, &secret_response);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(secret_response);
+    return SUCCESS;
+}
+
+
+//Makes use of the sample code function to close a current session
+uint32_t test_close_session(sgx_enclave_id_t src_enclave_id,
+                                sgx_enclave_id_t dest_enclave_id)
+{
+    dh_session_t dest_session_info;
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+         dest_session_info = it->second;
+    }
+    else
+    {
+        return NULL;
+    }
+    //Core reference code function for closing a session
+    ke_status = close_session(src_enclave_id, dest_enclave_id);
+
+    //Erase the session information associated with the destination enclave id
+    g_src_session_info_map.erase(dest_enclave_id);
+    return ke_status;
+}
+
+//Function that is used to verify the trust of the other enclave
+//Each enclave can have its own way verifying the peer enclave identity
+extern "C" uint32_t verify_peer_enclave_trust(sgx_dh_session_enclave_identity_t* peer_enclave_identity)
+{
+    if(!peer_enclave_identity)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    if(peer_enclave_identity->isv_prod_id != 0 || !(peer_enclave_identity->attributes.flags & SGX_FLAGS_INITTED))
+        // || peer_enclave_identity->attributes.xfrm !=3)// || peer_enclave_identity->mr_signer != xx //TODO: To be hardcoded with values to check
+    {
+        return ENCLAVE_TRUST_ERROR;
+    }
+    else
+    {
+        return SUCCESS;
+    }
+}
+
+//Dispatch function that calls the approriate enclave function based on the function id
+//Each enclave can have its own way of dispatching the calls from other enclave
+extern "C" uint32_t enclave_to_enclave_call_dispatcher(char* decrypted_data,
+                                                       size_t decrypted_data_length,
+                                                       char** resp_buffer,
+                                                       size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t (*fn1)(ms_in_msg_exchange_t *ms, size_t, char**, size_t*);
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+    if(ms->target_fn_id >= func_table.num_funcs)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    fn1 = (uint32_t (*)(ms_in_msg_exchange_t*, size_t, char**, size_t*))func_table.table[ms->target_fn_id];
+    return fn1(ms, decrypted_data_length, resp_buffer, resp_length);
+}
+
+//Operates on the input secret and generates the output secret
+uint32_t get_message_exchange_response(uint32_t inp_secret_data)
+{
+    uint32_t secret_response;
+
+    //User should use more complex encryption method to protect their secret, below is just a simple example
+    secret_response = inp_secret_data & 0x11111111;
+
+    return secret_response;
+
+}
+
+//Generates the response from the request message
+extern "C" uint32_t message_exchange_response_generator(char* decrypted_data,
+                                              char** resp_buffer,
+                                               size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t inp_secret_data;
+    uint32_t out_secret_data;
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+
+    if(umarshal_message_exchange_request(&inp_secret_data,ms) != SUCCESS)
+        return ATTESTATION_ERROR;
+
+    out_secret_data = get_message_exchange_response(inp_secret_data);
+
+    if(marshal_message_exchange_response(resp_buffer, resp_length, out_secret_data) != SUCCESS)
+        return MALLOC_ERROR;
+
+    return SUCCESS;
+
+}
+
+static uint32_t e2_foo1(uint32_t var1, uint32_t var2)
+{
+    return(var1 + var2);
+}
+
+//Function which is executed on request from the source enclave
+static uint32_t e2_foo1_wrapper(ms_in_msg_exchange_t *ms,
+                    size_t param_lenth,
+                    char** resp_buffer,
+                    size_t* resp_length)
+{
+    UNUSED(param_lenth);
+
+    uint32_t var1,var2,ret;
+    if(!ms || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    if(unmarshal_input_parameters_e2_foo1(&var1, &var2, ms) != SUCCESS)
+        return ATTESTATION_ERROR;
+
+    ret = e2_foo1(var1, var2);
+
+    if(marshal_retval_and_output_parameters_e2_foo1(resp_buffer, resp_length, ret) != SUCCESS )
+        return MALLOC_ERROR; //can set resp buffer to null here
+
+    return SUCCESS;
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave2/Enclave2.edl

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+enclave {
+    include "sgx_eid.h"
+    from "../LocalAttestationCode/LocalAttestationCode.edl" import *;
+    from "sgx_tstdc.edl" import *;
+    trusted{
+              public uint32_t test_create_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+            public uint32_t test_close_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+    };
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave2/Enclave2.lds

@@ -0,0 +1,10 @@
+Enclave2.so
+{
+    global:
+        g_global_data_sim;
+        g_global_data;
+        enclave_entry;
+        g_peak_heap_used;
+    local:
+        *;
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave2/Enclave2_private.pem

@@ -0,0 +1,39 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave2/Utility_E2.cpp

@@ -0,0 +1,213 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "sgx_eid.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E2.h"
+#include "stdlib.h"
+#include "string.h"
+
+uint32_t marshal_input_parameters_e3_foo1(uint32_t target_fn_id, uint32_t msg_type, param_struct_t *p_struct_var, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t param_len, ms_len;
+    char *temp_buff;
+    if(!p_struct_var || !marshalled_buff_len)
+        return INVALID_PARAMETER_ERROR;    
+    param_len = sizeof(param_struct_t);
+    temp_buff = (char*)malloc(param_len);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+    memcpy(temp_buff, p_struct_var, sizeof(param_struct_t)); //can be optimized
+    ms_len = sizeof(ms_in_msg_exchange_t) + param_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)param_len;
+    memcpy(&ms->inparam_buff, temp_buff, param_len);
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t unmarshal_retval_and_output_parameters_e3_foo1(char* out_buff, param_struct_t *p_struct_var, char** retval)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff)
+        return INVALID_PARAMETER_ERROR;
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *retval = (char*)malloc(retval_len);
+    if(!*retval)
+    {
+        return MALLOC_ERROR;
+    }
+    memcpy(*retval, ms->ret_outparam_buff, retval_len);
+    memcpy(&p_struct_var->var1, (ms->ret_outparam_buff) + retval_len, sizeof(p_struct_var->var1));
+    memcpy(&p_struct_var->var2, (ms->ret_outparam_buff) + retval_len + sizeof(p_struct_var->var1), sizeof(p_struct_var->var2));
+    return SUCCESS;
+}
+
+
+uint32_t unmarshal_input_parameters_e2_foo1(uint32_t* var1, uint32_t* var2, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!var1 || !var2 || !ms)
+        return INVALID_PARAMETER_ERROR;
+
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+
+    if(len != (sizeof(*var1) + sizeof(*var2)))
+        return ATTESTATION_ERROR;
+
+    memcpy(var1, buff, sizeof(*var1));
+    memcpy(var2, buff + sizeof(*var1), sizeof(*var2));
+
+    return SUCCESS;
+}
+
+uint32_t marshal_retval_and_output_parameters_e2_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t ret_param_len, ms_len;
+    char *temp_buff;
+    size_t retval_len;
+    if(!resp_length)
+        return INVALID_PARAMETER_ERROR;
+    retval_len = sizeof(retval);
+    ret_param_len = retval_len; //no out parameters
+    temp_buff = (char*)malloc(ret_param_len);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+
+    memcpy(temp_buff, &retval, sizeof(retval)); 
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, temp_buff, ret_param_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t secret_data_len, ms_len;
+    if(!marshalled_buff_len)
+        return INVALID_PARAMETER_ERROR;    
+    secret_data_len = sizeof(secret_data);
+    ms_len = sizeof(ms_in_msg_exchange_t) + secret_data_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)secret_data_len;
+    memcpy(&ms->inparam_buff, &secret_data, secret_data_len);
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+    return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!inp_secret_data || !ms)
+        return INVALID_PARAMETER_ERROR;    
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+    if(len != sizeof(uint32_t))
+        return ATTESTATION_ERROR;
+
+    memcpy(inp_secret_data, buff, sizeof(uint32_t));
+
+    return SUCCESS;
+}
+
+
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t secret_response_len, ms_len;
+    size_t retval_len, ret_param_len;
+    if(!resp_length)
+        return INVALID_PARAMETER_ERROR;    
+    secret_response_len = sizeof(secret_response);
+    retval_len = secret_response_len;
+    ret_param_len = secret_response_len;
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, &secret_response, secret_response_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+     return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff)
+        return INVALID_PARAMETER_ERROR;    
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *secret_response = (char*)malloc(retval_len);
+    if(!*secret_response)
+    {
+        return MALLOC_ERROR;
+    }
+    memcpy(*secret_response, ms->ret_outparam_buff, retval_len);
+    return SUCCESS;
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave2/Utility_E2.h

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef UTILITY_E2_H__
+#define UTILITY_E2_H__
+#include "stdint.h"
+
+typedef struct _param_struct_t
+{
+    uint32_t var1;
+    uint32_t var2;
+}param_struct_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint32_t marshal_input_parameters_e3_foo1(uint32_t target_fn_id, uint32_t msg_type, param_struct_t *p_struct_var, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t unmarshal_retval_and_output_parameters_e3_foo1(char* out_buff, param_struct_t *p_struct_var, char** retval);
+uint32_t unmarshal_input_parameters_e2_foo1(uint32_t* var1, uint32_t* var2, ms_in_msg_exchange_t* ms);
+uint32_t marshal_retval_and_output_parameters_e2_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval);
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms);
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response);
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response);
+
+#ifdef __cplusplus
+ }
+#endif
+#endif
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave3/Enclave3.config.xml

@@ -0,0 +1,12 @@
+<EnclaveConfiguration> 
+  <ProdID>0</ProdID> 
+  <ISVSVN>0</ISVSVN> 
+  <StackMaxSize>0x40000</StackMaxSize> 
+  <HeapMaxSize>0x100000</HeapMaxSize> 
+  <TCSNum>1</TCSNum> 
+  <TCSPolicy>1</TCSPolicy>
+  <!-- Recommend changing 'DisableDebug' to 1 to make the enclave undebuggable for enclave release -->
+  <DisableDebug>0</DisableDebug> 
+  <MiscSelect>0</MiscSelect>
+  <MiscMask>0xFFFFFFFF</MiscMask>
+</EnclaveConfiguration>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave3/Enclave3.cpp

@@ -0,0 +1,366 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+// Enclave3.cpp : Defines the exported functions for the DLL application
+#include "sgx_eid.h"
+#include "Enclave3_t.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E3.h"
+#include "sgx_thread.h"
+#include "sgx_dh.h"
+#include <map>
+
+#define UNUSED(val) (void)(val)
+
+std::map<sgx_enclave_id_t, dh_session_t>g_src_session_info_map;
+
+static uint32_t e3_foo1_wrapper(ms_in_msg_exchange_t *ms, size_t param_lenth, char** resp_buffer, size_t* resp_length);
+
+//Function pointer table containing the list of functions that the enclave exposes
+const struct {
+    size_t num_funcs;
+    const void* table[1];
+} func_table = {
+    1,
+    {
+        (const void*)e3_foo1_wrapper,
+    }
+};
+
+//Makes use of the sample code function to establish a secure channel with the destination enclave
+uint32_t test_create_session(sgx_enclave_id_t src_enclave_id,
+                          sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    dh_session_t dest_session_info;
+    //Core reference code function for creating a session
+    ke_status = create_session(src_enclave_id, dest_enclave_id,&dest_session_info);
+    if(ke_status == SUCCESS)
+    {
+        //Insert the session information into the map under the corresponding destination enclave id
+        g_src_session_info_map.insert(std::pair<sgx_enclave_id_t, dh_session_t>(dest_enclave_id, dest_session_info));
+    }
+    memset(&dest_session_info, 0, sizeof(dh_session_t));
+    return ke_status;
+}
+
+//Makes use of the sample code function to do an enclave to enclave call (Test Vector)
+uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id,
+                                          sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    external_param_struct_t *p_struct_var, struct_var;
+    internal_param_struct_t internal_struct_var;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* retval;
+
+    max_out_buff_size = 50;
+    msg_type = ENCLAVE_TO_ENCLAVE_CALL;
+    target_fn_id = 0;
+    internal_struct_var.ivar1 = 0x5;
+    internal_struct_var.ivar2 = 0x6;
+    struct_var.var1 = 0x3;
+    struct_var.var2 = 0x4;
+    struct_var.p_internal_struct = &internal_struct_var;
+    p_struct_var = &struct_var;
+
+    size_t len_data = sizeof(struct_var) - sizeof(struct_var.p_internal_struct);
+    size_t len_ptr_data = sizeof(internal_struct_var);
+
+    //Marshals the input parameters for calling function foo1 in Enclave1 into a input buffer
+    ke_status = marshal_input_parameters_e1_foo1(target_fn_id, msg_type, p_struct_var, len_data,
+                                len_ptr_data, &marshalled_inp_buff, &marshalled_inp_buff_len);
+
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+        dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info,
+                  marshalled_inp_buff, marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    ////Un-marshal the return value and output parameters from foo1 of Enclave1
+    ke_status = unmarshal_retval_and_output_parameters_e1_foo1(out_buff, p_struct_var, &retval);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(retval);
+    return SUCCESS;
+}
+
+//Makes use of the sample code function to do a generic secret message exchange (Test Vector)
+uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id,
+                               sgx_enclave_id_t dest_enclave_id)
+{
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    uint32_t target_fn_id, msg_type;
+    char* marshalled_inp_buff;
+    size_t marshalled_inp_buff_len;
+    char* out_buff;
+    size_t out_buff_len;
+    dh_session_t *dest_session_info;
+    size_t max_out_buff_size;
+    char* secret_response;
+    uint32_t secret_data;
+
+    target_fn_id = 0;
+    msg_type = MESSAGE_EXCHANGE;
+    max_out_buff_size = 50;
+    secret_data = 0x12345678; //Secret Data here is shown only for purpose of demonstration.
+
+    //Marshals the parameters into a buffer
+    ke_status = marshal_message_exchange_request(target_fn_id, msg_type, secret_data, &marshalled_inp_buff, &marshalled_inp_buff_len);
+    if(ke_status != SUCCESS)
+    {
+        return ke_status;
+    }
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+        dest_session_info = &it->second;
+    }
+    else
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        return INVALID_SESSION;
+    }
+
+    //Core Reference Code function
+    ke_status = send_request_receive_response(src_enclave_id, dest_enclave_id, dest_session_info, marshalled_inp_buff,
+                                                marshalled_inp_buff_len, max_out_buff_size, &out_buff, &out_buff_len);
+
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+    //Un-marshal the secret response data
+    ke_status = umarshal_message_exchange_response(out_buff, &secret_response);
+    if(ke_status != SUCCESS)
+    {
+        SAFE_FREE(marshalled_inp_buff);
+        SAFE_FREE(out_buff);
+        return ke_status;
+    }
+
+    SAFE_FREE(marshalled_inp_buff);
+    SAFE_FREE(out_buff);
+    SAFE_FREE(secret_response);
+    return SUCCESS;
+}
+
+
+//Makes use of the sample code function to close a current session
+uint32_t test_close_session(sgx_enclave_id_t src_enclave_id,
+                                sgx_enclave_id_t dest_enclave_id)
+{
+    dh_session_t dest_session_info;
+    ATTESTATION_STATUS ke_status = SUCCESS;
+    //Search the map for the session information associated with the destination enclave id passed in
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_src_session_info_map.find(dest_enclave_id);
+    if(it != g_src_session_info_map.end())
+    {
+        dest_session_info = it->second;
+    }
+    else
+    {
+        return NULL;
+    }
+    //Core reference code function for closing a session
+    ke_status = close_session(src_enclave_id, dest_enclave_id);
+
+    //Erase the session information associated with the destination enclave id
+    g_src_session_info_map.erase(dest_enclave_id);
+    return ke_status;
+}
+
+//Function that is used to verify the trust of the other enclave
+//Each enclave can have its own way verifying the peer enclave identity
+extern "C" uint32_t verify_peer_enclave_trust(sgx_dh_session_enclave_identity_t* peer_enclave_identity)
+{
+    if(!peer_enclave_identity)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    if(peer_enclave_identity->isv_prod_id != 0 || !(peer_enclave_identity->attributes.flags & SGX_FLAGS_INITTED))
+        // || peer_enclave_identity->attributes.xfrm !=3)// || peer_enclave_identity->mr_signer != xx //TODO: To be hardcoded with values to check
+    {
+        return ENCLAVE_TRUST_ERROR;
+    }
+    else
+    {
+        return SUCCESS;
+    }
+}
+
+
+//Dispatch function that calls the approriate enclave function based on the function id
+//Each enclave can have its own way of dispatching the calls from other enclave
+extern "C" uint32_t enclave_to_enclave_call_dispatcher(char* decrypted_data,
+                                                       size_t decrypted_data_length,
+                                                       char** resp_buffer,
+                                                       size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t (*fn1)(ms_in_msg_exchange_t *ms, size_t, char**, size_t*);
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+    if(ms->target_fn_id >= func_table.num_funcs)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    fn1 = (uint32_t (*)(ms_in_msg_exchange_t*, size_t, char**, size_t*))func_table.table[ms->target_fn_id];
+    return fn1(ms, decrypted_data_length, resp_buffer, resp_length);
+}
+
+//Operates on the input secret and generates the output secret
+uint32_t get_message_exchange_response(uint32_t inp_secret_data)
+{
+    uint32_t secret_response;
+
+    //User should use more complex encryption method to protect their secret, below is just a simple example
+    secret_response = inp_secret_data & 0x11111111;
+
+    return secret_response;
+
+}
+//Generates the response from the request message
+extern "C" uint32_t message_exchange_response_generator(char* decrypted_data,
+                                              char** resp_buffer,
+                                              size_t* resp_length)
+{
+    ms_in_msg_exchange_t *ms;
+    uint32_t inp_secret_data;
+    uint32_t out_secret_data;
+    if(!decrypted_data || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+
+    if(umarshal_message_exchange_request(&inp_secret_data,ms) != SUCCESS)
+        return ATTESTATION_ERROR;
+
+    out_secret_data = get_message_exchange_response(inp_secret_data);
+
+    if(marshal_message_exchange_response(resp_buffer, resp_length, out_secret_data) != SUCCESS)
+        return MALLOC_ERROR;
+
+    return SUCCESS;
+
+}
+
+
+static uint32_t e3_foo1(param_struct_t *p_struct_var)
+{
+    if(!p_struct_var)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    p_struct_var->var1++;
+    p_struct_var->var2++;
+
+    return(p_struct_var->var1 * p_struct_var->var2);
+}
+
+//Function which is executed on request from the source enclave
+static uint32_t e3_foo1_wrapper(ms_in_msg_exchange_t *ms,
+                    size_t param_lenth,
+                    char** resp_buffer,
+                    size_t* resp_length)
+{
+    UNUSED(param_lenth);
+    
+    uint32_t ret;
+    param_struct_t *p_struct_var;
+    if(!ms || !resp_length)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    p_struct_var = (param_struct_t*)malloc(sizeof(param_struct_t));
+    if(!p_struct_var)
+        return MALLOC_ERROR;
+
+    if(unmarshal_input_parameters_e3_foo1(p_struct_var, ms) != SUCCESS)
+    {
+        SAFE_FREE(p_struct_var);
+        return ATTESTATION_ERROR;
+    }
+
+    ret = e3_foo1(p_struct_var);
+
+    if(marshal_retval_and_output_parameters_e3_foo1(resp_buffer, resp_length, ret, p_struct_var) != SUCCESS)
+    {
+        SAFE_FREE(p_struct_var);
+        return MALLOC_ERROR;
+    }
+    SAFE_FREE(p_struct_var);
+    return SUCCESS;
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave3/Enclave3.edl

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+enclave {
+    include "sgx_eid.h"
+    from "../LocalAttestationCode/LocalAttestationCode.edl" import *;
+    from "sgx_tstdc.edl" import *;
+    trusted{
+        public uint32_t test_create_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+        public uint32_t test_enclave_to_enclave_call(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+        public uint32_t test_message_exchange(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+        public uint32_t test_close_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+    };
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave3/Enclave3.lds

@@ -0,0 +1,10 @@
+Enclave3.so
+{
+    global:
+        g_global_data_sim;
+        g_global_data;
+        enclave_entry;
+        g_peak_heap_used;
+    local:
+        *;
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave3/Enclave3_private.pem

@@ -0,0 +1,39 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave3/Utility_E3.cpp

@@ -0,0 +1,223 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "sgx_eid.h"
+#include "EnclaveMessageExchange.h"
+#include "error_codes.h"
+#include "Utility_E3.h"
+#include "stdlib.h"
+#include "string.h"
+
+uint32_t marshal_input_parameters_e1_foo1(uint32_t target_fn_id, uint32_t msg_type, external_param_struct_t *p_struct_var, size_t len_data, size_t len_ptr_data, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t param_len, ms_len;
+    char *temp_buff;
+    int* addr;
+    char* struct_data;
+    if(!p_struct_var || !marshalled_buff_len)
+        return INVALID_PARAMETER_ERROR;    
+    struct_data = (char*)p_struct_var;
+    temp_buff = (char*)malloc(len_data + len_ptr_data);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+    memcpy(temp_buff, struct_data, len_data);
+    addr = *(int **)(struct_data + len_data);
+    memcpy(temp_buff + len_data, addr, len_ptr_data); //can be optimized
+    param_len = len_data + len_ptr_data;
+    ms_len =  sizeof(ms_in_msg_exchange_t) + param_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)param_len;
+    memcpy(&ms->inparam_buff, temp_buff, param_len);
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+        
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t marshal_retval_and_output_parameters_e3_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval, param_struct_t *p_struct_var)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t ret_param_len, ms_len;
+    char *temp_buff;
+    size_t retval_len;
+    if(!resp_length || !p_struct_var)
+        return INVALID_PARAMETER_ERROR;    
+    retval_len = sizeof(retval);
+    ret_param_len = sizeof(retval) + sizeof(param_struct_t);
+    temp_buff = (char*)malloc(ret_param_len);
+    if(!temp_buff)
+        return MALLOC_ERROR;
+    memcpy(temp_buff, &retval, sizeof(retval)); 
+    memcpy(temp_buff + sizeof(retval), p_struct_var, sizeof(param_struct_t));
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+    {
+        SAFE_FREE(temp_buff);
+        return MALLOC_ERROR;
+    }
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, temp_buff, ret_param_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+    SAFE_FREE(temp_buff);
+    return SUCCESS;
+}
+
+uint32_t unmarshal_input_parameters_e3_foo1(param_struct_t *pstruct, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!pstruct || !ms)
+        return INVALID_PARAMETER_ERROR;    
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+
+    if(len != (sizeof(pstruct->var1) + sizeof(pstruct->var2)))
+        return ATTESTATION_ERROR;
+
+    memcpy(&pstruct->var1, buff, sizeof(pstruct->var1));
+    memcpy(&pstruct->var2, buff + sizeof(pstruct->var1), sizeof(pstruct->var2)); 
+
+    return SUCCESS;
+}
+
+
+uint32_t unmarshal_retval_and_output_parameters_e1_foo1(char* out_buff, external_param_struct_t *p_struct_var, char** retval)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff || !p_struct_var)
+        return INVALID_PARAMETER_ERROR;    
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *retval = (char*)malloc(retval_len);
+    if(!*retval)
+    {
+        return MALLOC_ERROR;
+    }
+    memcpy(*retval, ms->ret_outparam_buff, retval_len);
+    memcpy(&p_struct_var->var1, (ms->ret_outparam_buff) + retval_len, sizeof(p_struct_var->var1));
+    memcpy(&p_struct_var->var2, (ms->ret_outparam_buff) + retval_len + sizeof(p_struct_var->var1), sizeof(p_struct_var->var2));
+    memcpy(&p_struct_var->p_internal_struct->ivar1, (ms->ret_outparam_buff) + retval_len + sizeof(p_struct_var->var1)+ sizeof(p_struct_var->var2), sizeof(p_struct_var->p_internal_struct->ivar1));
+    memcpy(&p_struct_var->p_internal_struct->ivar2, (ms->ret_outparam_buff) + retval_len + sizeof(p_struct_var->var1)+ sizeof(p_struct_var->var2) + sizeof(p_struct_var->p_internal_struct->ivar1), sizeof(p_struct_var->p_internal_struct->ivar2));
+    return SUCCESS;
+}
+
+
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len)
+{
+    ms_in_msg_exchange_t *ms;
+    size_t secret_data_len, ms_len;
+    if(!marshalled_buff_len)
+        return INVALID_PARAMETER_ERROR;            
+    secret_data_len = sizeof(secret_data);
+    ms_len = sizeof(ms_in_msg_exchange_t) + secret_data_len;
+    ms = (ms_in_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+
+    ms->msg_type = msg_type;
+    ms->target_fn_id = target_fn_id;
+    ms->inparam_buff_len = (uint32_t)secret_data_len;
+    memcpy(&ms->inparam_buff, &secret_data, secret_data_len);
+
+    *marshalled_buff = (char*)ms;
+    *marshalled_buff_len = ms_len;
+    return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms)
+{
+    char* buff;
+    size_t len;
+    if(!inp_secret_data || !ms)
+        return INVALID_PARAMETER_ERROR;    
+    buff = ms->inparam_buff;
+    len = ms->inparam_buff_len;
+
+    if(len != sizeof(uint32_t))
+        return ATTESTATION_ERROR;
+
+    memcpy(inp_secret_data, buff, sizeof(uint32_t));
+
+    return SUCCESS;
+}
+
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response)
+{
+    ms_out_msg_exchange_t *ms;
+    size_t secret_response_len, ms_len;
+    size_t retval_len, ret_param_len;
+    if(!resp_length)
+        return INVALID_PARAMETER_ERROR;    
+    secret_response_len = sizeof(secret_response);
+    retval_len = secret_response_len;
+    ret_param_len = secret_response_len;
+    ms_len = sizeof(ms_out_msg_exchange_t) + ret_param_len;
+    ms = (ms_out_msg_exchange_t *)malloc(ms_len);
+    if(!ms)
+        return MALLOC_ERROR;
+    ms->retval_len = (uint32_t)retval_len;
+    ms->ret_outparam_buff_len = (uint32_t)ret_param_len;
+    memcpy(&ms->ret_outparam_buff, &secret_response, secret_response_len);
+    *resp_buffer = (char*)ms;
+    *resp_length = ms_len;
+     return SUCCESS;
+}
+
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response)
+{
+    size_t retval_len;
+    ms_out_msg_exchange_t *ms;
+    if(!out_buff)
+        return INVALID_PARAMETER_ERROR;    
+    ms = (ms_out_msg_exchange_t *)out_buff;
+    retval_len = ms->retval_len;
+    *secret_response = (char*)malloc(retval_len);
+    if(!*secret_response)
+    {
+        return MALLOC_ERROR;
+    }
+    memcpy(*secret_response, ms->ret_outparam_buff, retval_len);
+    return SUCCESS;
+}
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Enclave3/Utility_E3.h

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef UTILITY_E3_H__
+#define UTILITY_E3_H__
+
+#include "stdint.h"
+
+
+typedef struct _internal_param_struct_t
+{
+    uint32_t ivar1;
+    uint32_t ivar2;
+}internal_param_struct_t;
+
+typedef struct _external_param_struct_t
+{
+    uint32_t var1;
+    uint32_t var2;
+    internal_param_struct_t *p_internal_struct;
+}external_param_struct_t;
+
+typedef struct _param_struct_t
+{
+    uint32_t var1;
+    uint32_t var2;
+}param_struct_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint32_t marshal_input_parameters_e1_foo1(uint32_t target_fn_id, uint32_t msg_type, external_param_struct_t *p_struct_var, size_t len_data, size_t len_ptr_data, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t unmarshal_retval_and_output_parameters_e1_foo1(char* out_buff, external_param_struct_t *p_struct_var, char** retval);
+uint32_t unmarshal_input_parameters_e3_foo1(param_struct_t *pstruct, ms_in_msg_exchange_t* ms);
+uint32_t marshal_retval_and_output_parameters_e3_foo1(char** resp_buffer, size_t* resp_length, uint32_t retval, param_struct_t *p_struct_var);
+uint32_t marshal_message_exchange_request(uint32_t target_fn_id, uint32_t msg_type, uint32_t secret_data, char** marshalled_buff, size_t* marshalled_buff_len);
+uint32_t umarshal_message_exchange_request(uint32_t* inp_secret_data, ms_in_msg_exchange_t* ms);
+uint32_t marshal_message_exchange_response(char** resp_buffer, size_t* resp_length, uint32_t secret_response);
+uint32_t umarshal_message_exchange_response(char* out_buff, char** secret_response);
+
+#ifdef __cplusplus
+ }
+#endif
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Include/dh_session_protocol.h

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef _DH_SESSION_PROROCOL_H
+#define _DH_SESSION_PROROCOL_H
+
+#include "sgx_ecp_types.h"
+#include "sgx_key.h"
+#include "sgx_report.h"
+#include "sgx_attributes.h"
+
+#define NONCE_SIZE         16
+#define MAC_SIZE           16
+
+#define MSG_BUF_LEN        sizeof(ec_pub_t)*2
+#define MSG_HASH_SZ        32
+
+
+//Session information structure
+typedef struct _la_dh_session_t
+{
+    uint32_t  session_id; //Identifies the current session
+    uint32_t  status; //Indicates session is in progress, active or closed
+    union
+    {
+        struct
+        {
+			sgx_dh_session_t dh_session;
+        }in_progress;
+
+        struct
+        {
+            sgx_key_128bit_t AEK; //Session Key
+            uint32_t counter; //Used to store Message Sequence Number
+        }active;
+    };
+} dh_session_t;
+
+
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/LocalAttestationCode/EnclaveMessageExchange.cpp

@@ -0,0 +1,760 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "sgx_trts.h"
+#include "sgx_utils.h"
+#include "EnclaveMessageExchange.h"
+#include "sgx_eid.h"
+#include "error_codes.h"
+#include "sgx_ecp_types.h"
+#include "sgx_thread.h"
+#include <map>
+#include "dh_session_protocol.h"
+#include "sgx_dh.h"
+#include "sgx_tcrypto.h"
+#include "LocalAttestationCode_t.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint32_t enclave_to_enclave_call_dispatcher(char* decrypted_data, size_t decrypted_data_length, char** resp_buffer, size_t* resp_length);
+uint32_t message_exchange_response_generator(char* decrypted_data, char** resp_buffer, size_t* resp_length);
+uint32_t verify_peer_enclave_trust(sgx_dh_session_enclave_identity_t* peer_enclave_identity);
+
+#ifdef __cplusplus
+}
+#endif
+
+#define MAX_SESSION_COUNT  16
+
+//number of open sessions
+uint32_t g_session_count = 0;
+
+ATTESTATION_STATUS generate_session_id(uint32_t *session_id);
+ATTESTATION_STATUS end_session(sgx_enclave_id_t src_enclave_id);
+
+//Array of open session ids
+session_id_tracker_t *g_session_id_tracker[MAX_SESSION_COUNT];
+
+//Map between the source enclave id and the session information associated with that particular session
+std::map<sgx_enclave_id_t, dh_session_t>g_dest_session_info_map;
+
+//Create a session with the destination enclave
+ATTESTATION_STATUS create_session(sgx_enclave_id_t src_enclave_id,
+                         sgx_enclave_id_t dest_enclave_id,
+                         dh_session_t *session_info)
+{
+	ocall_print_string("[ECALL] create_session()\n");
+    sgx_dh_msg1_t dh_msg1;            //Diffie-Hellman Message 1
+    sgx_key_128bit_t dh_aek;        // Session Key
+    sgx_dh_msg2_t dh_msg2;            //Diffie-Hellman Message 2
+    sgx_dh_msg3_t dh_msg3;            //Diffie-Hellman Message 3
+    uint32_t session_id;
+    uint32_t retstatus;
+    sgx_status_t status = SGX_SUCCESS;
+    sgx_dh_session_t sgx_dh_session;
+    sgx_dh_session_enclave_identity_t responder_identity;
+	// for exchange report
+	// ATTESTATION_STATUS status = SUCCESS;
+	sgx_dh_session_enclave_identity_t initiator_identity;
+
+    if(!session_info)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    memset(&dh_aek,0, sizeof(sgx_key_128bit_t));
+    memset(&dh_msg1, 0, sizeof(sgx_dh_msg1_t));
+    memset(&dh_msg2, 0, sizeof(sgx_dh_msg2_t));
+    memset(&dh_msg3, 0, sizeof(sgx_dh_msg3_t));
+    memset(session_info, 0, sizeof(dh_session_t));
+
+   //Intialize the session as a session responder
+	ocall_print_string("[ECALL] Initializing the session as session responder...\n");
+    status = sgx_dh_init_session(SGX_DH_SESSION_RESPONDER, &sgx_dh_session);
+    if(SGX_SUCCESS != status)
+    {
+        return status;
+    }
+
+    //get a new SessionID
+	ocall_print_string("[ECALL] Getting a new SessionID\n");
+    if ((status = (sgx_status_t)generate_session_id(&session_id)) != SUCCESS)
+        return status; //no more sessions available
+
+    //Allocate memory for the session id tracker
+    g_session_id_tracker[session_id] = (session_id_tracker_t *)malloc(sizeof(session_id_tracker_t));
+    if(!g_session_id_tracker[session_id])
+    {
+        return MALLOC_ERROR;
+    }
+
+	memset(g_session_id_tracker[session_id], 0, sizeof(session_id_tracker_t));
+    g_session_id_tracker[session_id]->session_id = session_id;
+    session_info->status = IN_PROGRESS;
+
+	//Generate Message1 that will be returned to Source Enclave
+	ocall_print_string("[ECALL] Generating message1 that will be passed to session initiator\n");
+    status = sgx_dh_responder_gen_msg1((sgx_dh_msg1_t*)&dh_msg1, &sgx_dh_session);
+    if(SGX_SUCCESS != status)
+    {
+        SAFE_FREE(g_session_id_tracker[session_id]);
+        return status;
+    }
+
+	memcpy(&session_info->in_progress.dh_session, &sgx_dh_session, sizeof(sgx_dh_session_t));
+    //Store the session information under the correspoding source enlave id key
+	g_dest_session_info_map.insert(std::pair<sgx_enclave_id_t, dh_session_t>(0, *session_info));
+
+	// pass session id and msg1 to shared memory
+	// ocall_print_string("Entering session_request_ocall for IPC\n");
+    status = session_request_ocall(&retstatus, src_enclave_id, dest_enclave_id, &dh_msg1, &session_id);
+    if (status == SGX_SUCCESS)
+    {
+        if ((ATTESTATION_STATUS)retstatus != SUCCESS)
+            return ((ATTESTATION_STATUS)retstatus);
+    }
+    else
+    {
+        return ATTESTATION_SE_ERROR;
+    }
+
+	// starts report exchange
+
+    //first retrieve msg2 from initiator
+    status = exchange_report_ocall(&retstatus, src_enclave_id, dest_enclave_id, &dh_msg2, NULL, session_id);
+
+	dh_msg3.msg3_body.additional_prop_length = 0;
+    //Process message 2 from source enclave and obtain message 3
+	ocall_print_string("[ECALL] Processing message2 from Enclave1(Initiator) and obtain message3\n");
+    sgx_status_t se_ret = sgx_dh_responder_proc_msg2(&dh_msg2,
+                                                   &dh_msg3,
+                                                   &sgx_dh_session,
+                                                   &dh_aek,
+                                                   &initiator_identity);
+
+	if(SGX_SUCCESS != se_ret)
+    {
+        status = se_ret;
+        return status;
+    }
+
+    //Verify source enclave's trust
+	ocall_print_string("[ECALL] Verifying Enclave1(Initiator)'s trust\n");
+    if(verify_peer_enclave_trust(&initiator_identity) != SUCCESS)
+    {
+        return INVALID_SESSION;
+    }
+
+	status = exchange_report_ocall(&retstatus, src_enclave_id, dest_enclave_id, &dh_msg2, &dh_msg3, session_id);
+
+    if (status == SGX_SUCCESS)
+    {
+        if ((ATTESTATION_STATUS)retstatus != SUCCESS)
+            return ((ATTESTATION_STATUS)retstatus);
+    }
+    else
+    {
+        return ATTESTATION_SE_ERROR;
+    }
+
+    return status;
+}
+
+//Handle the request from Source Enclave for a session
+ATTESTATION_STATUS session_request(sgx_enclave_id_t src_enclave_id,
+                          sgx_dh_msg1_t *dh_msg1,
+                          uint32_t *session_id )
+{
+    ocall_print_string("Testing session_request()\n");
+    dh_session_t session_info;
+    sgx_dh_session_t sgx_dh_session;
+    sgx_status_t status = SGX_SUCCESS;
+
+    if(!session_id || !dh_msg1)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    //Intialize the session as a session responder
+    status = sgx_dh_init_session(SGX_DH_SESSION_RESPONDER, &sgx_dh_session);
+    if(SGX_SUCCESS != status)
+    {
+        return status;
+    }
+
+    //get a new SessionID
+    if ((status = (sgx_status_t)generate_session_id(session_id)) != SUCCESS)
+        return status; //no more sessions available
+
+    //Allocate memory for the session id tracker
+    g_session_id_tracker[*session_id] = (session_id_tracker_t *)malloc(sizeof(session_id_tracker_t));
+    if(!g_session_id_tracker[*session_id])
+    {
+        return MALLOC_ERROR;
+    }
+
+    memset(g_session_id_tracker[*session_id], 0, sizeof(session_id_tracker_t));
+    g_session_id_tracker[*session_id]->session_id = *session_id;
+    session_info.status = IN_PROGRESS;
+
+    //Generate Message1 that will be returned to Source Enclave
+    status = sgx_dh_responder_gen_msg1((sgx_dh_msg1_t*)dh_msg1, &sgx_dh_session);
+    if(SGX_SUCCESS != status)
+    {
+        SAFE_FREE(g_session_id_tracker[*session_id]);
+        return status;
+    }
+    memcpy(&session_info.in_progress.dh_session, &sgx_dh_session, sizeof(sgx_dh_session_t));
+    //Store the session information under the correspoding source enlave id key
+    g_dest_session_info_map.insert(std::pair<sgx_enclave_id_t, dh_session_t>(src_enclave_id, session_info));
+
+    return status;
+}
+
+//Verify Message 2, generate Message3 and exchange Message 3 with Source Enclave
+ATTESTATION_STATUS exchange_report(sgx_enclave_id_t src_enclave_id,
+                          sgx_dh_msg2_t *dh_msg2,
+                          sgx_dh_msg3_t *dh_msg3,
+                          uint32_t session_id)
+{
+
+    sgx_key_128bit_t dh_aek;   // Session key
+    dh_session_t *session_info;
+    ATTESTATION_STATUS status = SUCCESS;
+    sgx_dh_session_t sgx_dh_session;
+    sgx_dh_session_enclave_identity_t initiator_identity;
+
+    if(!dh_msg2 || !dh_msg3)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    memset(&dh_aek,0, sizeof(sgx_key_128bit_t));
+    do
+    {
+        //Retreive the session information for the corresponding source enclave id
+        std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_dest_session_info_map.find(src_enclave_id);
+        if(it != g_dest_session_info_map.end())
+        {
+            session_info = &it->second;
+        }
+        else
+        {
+            status = INVALID_SESSION;
+            break;
+        }
+
+        if(session_info->status != IN_PROGRESS)
+        {
+            status = INVALID_SESSION;
+            break;
+        }
+
+        memcpy(&sgx_dh_session, &session_info->in_progress.dh_session, sizeof(sgx_dh_session_t));
+
+        dh_msg3->msg3_body.additional_prop_length = 0;
+        //Process message 2 from source enclave and obtain message 3
+        sgx_status_t se_ret = sgx_dh_responder_proc_msg2(dh_msg2,
+                                                       dh_msg3,
+                                                       &sgx_dh_session,
+                                                       &dh_aek,
+                                                       &initiator_identity);
+        if(SGX_SUCCESS != se_ret)
+        {
+            status = se_ret;
+            break;
+        }
+
+        //Verify source enclave's trust
+          if(verify_peer_enclave_trust(&initiator_identity) != SUCCESS)
+        {
+            return INVALID_SESSION;
+        }
+
+        //save the session ID, status and initialize the session nonce
+        session_info->session_id = session_id;
+        session_info->status = ACTIVE;
+        session_info->active.counter = 0;
+        memcpy(session_info->active.AEK, &dh_aek, sizeof(sgx_key_128bit_t));
+        memset(&dh_aek,0, sizeof(sgx_key_128bit_t));
+        g_session_count++;
+    }while(0);
+
+    if(status != SUCCESS)
+    {
+        end_session(src_enclave_id);
+    }
+
+    return status;
+}
+
+//Request for the response size, send the request message to the destination enclave and receive the response message back
+ATTESTATION_STATUS send_request_receive_response(sgx_enclave_id_t src_enclave_id,
+                                  sgx_enclave_id_t dest_enclave_id,
+                                  dh_session_t *session_info,
+                                  char *inp_buff,
+                                  size_t inp_buff_len,
+                                  size_t max_out_buff_size,
+                                  char **out_buff,
+                                  size_t* out_buff_len)
+{
+    const uint8_t* plaintext;
+    uint32_t plaintext_length;
+    sgx_status_t status;
+    uint32_t retstatus;
+    secure_message_t* req_message;
+    secure_message_t* resp_message;
+    uint8_t *decrypted_data;
+    uint32_t decrypted_data_length;
+    uint32_t plain_text_offset;
+    uint8_t l_tag[TAG_SIZE];
+    size_t max_resp_message_length;
+    plaintext = (const uint8_t*)(" ");
+    plaintext_length = 0;
+
+    if(!session_info || !inp_buff)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    //Check if the nonce for the session has not exceeded 2^32-2 if so end session and start a new session
+    if(session_info->active.counter == ((uint32_t) - 2))
+    {
+        close_session(src_enclave_id, dest_enclave_id);
+        create_session(src_enclave_id, dest_enclave_id, session_info);
+    }
+
+    //Allocate memory for the AES-GCM request message
+    req_message = (secure_message_t*)malloc(sizeof(secure_message_t)+ inp_buff_len);
+    if(!req_message)
+    {
+        return MALLOC_ERROR;
+    }
+
+    memset(req_message,0,sizeof(secure_message_t)+ inp_buff_len);
+    const uint32_t data2encrypt_length = (uint32_t)inp_buff_len;
+    //Set the payload size to data to encrypt length
+    req_message->message_aes_gcm_data.payload_size = data2encrypt_length;
+
+    //Use the session nonce as the payload IV
+    memcpy(req_message->message_aes_gcm_data.reserved,&session_info->active.counter,sizeof(session_info->active.counter));
+
+    //Set the session ID of the message to the current session id
+    req_message->session_id = session_info->session_id;
+
+    //Prepare the request message with the encrypted payload
+    status = sgx_rijndael128GCM_encrypt(&session_info->active.AEK, (uint8_t*)inp_buff, data2encrypt_length,
+                reinterpret_cast<uint8_t *>(&(req_message->message_aes_gcm_data.payload)),
+                reinterpret_cast<uint8_t *>(&(req_message->message_aes_gcm_data.reserved)),
+                sizeof(req_message->message_aes_gcm_data.reserved), plaintext, plaintext_length,
+                &(req_message->message_aes_gcm_data.payload_tag));
+
+    if(SGX_SUCCESS != status)
+    {
+        SAFE_FREE(req_message);
+        return status;
+    }
+
+    //Allocate memory for the response payload to be copied
+    *out_buff = (char*)malloc(max_out_buff_size);
+    if(!*out_buff)
+    {
+        SAFE_FREE(req_message);
+        return MALLOC_ERROR;
+    }
+
+    memset(*out_buff, 0, max_out_buff_size);
+
+    //Allocate memory for the response message
+    resp_message = (secure_message_t*)malloc(sizeof(secure_message_t)+ max_out_buff_size);
+    if(!resp_message)
+    {
+        SAFE_FREE(req_message);
+        return MALLOC_ERROR;
+    }
+
+    memset(resp_message, 0, sizeof(secure_message_t)+ max_out_buff_size);
+
+    //Ocall to send the request to the Destination Enclave and get the response message back
+    status = send_request_ocall(&retstatus, src_enclave_id, dest_enclave_id, req_message,
+                                (sizeof(secure_message_t)+ inp_buff_len), max_out_buff_size,
+                                resp_message, (sizeof(secure_message_t)+ max_out_buff_size));
+    if (status == SGX_SUCCESS)
+    {
+        if ((ATTESTATION_STATUS)retstatus != SUCCESS)
+        {
+            SAFE_FREE(req_message);
+            SAFE_FREE(resp_message);
+            return ((ATTESTATION_STATUS)retstatus);
+        }
+    }
+    else
+    {
+        SAFE_FREE(req_message);
+        SAFE_FREE(resp_message);
+        return ATTESTATION_SE_ERROR;
+    }
+
+    max_resp_message_length = sizeof(secure_message_t)+ max_out_buff_size;
+
+    if(sizeof(resp_message) > max_resp_message_length)
+    {
+        SAFE_FREE(req_message);
+        SAFE_FREE(resp_message);
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    //Code to process the response message from the Destination Enclave
+
+    decrypted_data_length = resp_message->message_aes_gcm_data.payload_size;
+    plain_text_offset = decrypted_data_length;
+    decrypted_data = (uint8_t*)malloc(decrypted_data_length);
+    if(!decrypted_data)
+    {
+        SAFE_FREE(req_message);
+        SAFE_FREE(resp_message);
+        return MALLOC_ERROR;
+    }
+    memset(&l_tag, 0, 16);
+
+    memset(decrypted_data, 0, decrypted_data_length);
+
+    //Decrypt the response message payload
+    status = sgx_rijndael128GCM_decrypt(&session_info->active.AEK, resp_message->message_aes_gcm_data.payload,
+                decrypted_data_length, decrypted_data,
+                reinterpret_cast<uint8_t *>(&(resp_message->message_aes_gcm_data.reserved)),
+                sizeof(resp_message->message_aes_gcm_data.reserved), &(resp_message->message_aes_gcm_data.payload[plain_text_offset]), plaintext_length,
+                &resp_message->message_aes_gcm_data.payload_tag);
+
+    if(SGX_SUCCESS != status)
+    {
+        SAFE_FREE(req_message);
+        SAFE_FREE(decrypted_data);
+        SAFE_FREE(resp_message);
+        return status;
+    }
+
+    // Verify if the nonce obtained in the response is equal to the session nonce + 1 (Prevents replay attacks)
+    if(*(resp_message->message_aes_gcm_data.reserved) != (session_info->active.counter + 1 ))
+    {
+        SAFE_FREE(req_message);
+        SAFE_FREE(resp_message);
+        SAFE_FREE(decrypted_data);
+        return INVALID_PARAMETER_ERROR;
+    }
+
+        //Update the value of the session nonce in the source enclave
+    session_info->active.counter = session_info->active.counter + 1;
+
+    memcpy(out_buff_len, &decrypted_data_length, sizeof(decrypted_data_length));
+    memcpy(*out_buff, decrypted_data, decrypted_data_length);
+
+    SAFE_FREE(decrypted_data);
+    SAFE_FREE(req_message);
+    SAFE_FREE(resp_message);
+    return SUCCESS;
+
+
+}
+
+//Process the request from the Source enclave and send the response message back to the Source enclave
+ATTESTATION_STATUS generate_response(sgx_enclave_id_t src_enclave_id,
+                                     secure_message_t* req_message,
+                                     size_t req_message_size,
+                                     size_t max_payload_size,
+                                     secure_message_t* resp_message,
+                                     size_t resp_message_size)
+{
+    const uint8_t* plaintext;
+    uint32_t plaintext_length;
+    uint8_t *decrypted_data;
+    uint32_t decrypted_data_length;
+    uint32_t plain_text_offset;
+    ms_in_msg_exchange_t * ms;
+    size_t resp_data_length;
+    size_t resp_message_calc_size;
+    char* resp_data;
+    uint8_t l_tag[TAG_SIZE];
+    size_t header_size, expected_payload_size;
+    dh_session_t *session_info;
+    secure_message_t* temp_resp_message;
+    uint32_t ret;
+    sgx_status_t status;
+
+    plaintext = (const uint8_t*)(" ");
+    plaintext_length = 0;
+
+    if(!req_message || !resp_message)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    //Get the session information from the map corresponding to the source enclave id
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_dest_session_info_map.find(src_enclave_id);
+    if(it != g_dest_session_info_map.end())
+    {
+        session_info = &it->second;
+    }
+    else
+    {
+        return INVALID_SESSION;
+    }
+
+    if(session_info->status != ACTIVE)
+    {
+        return INVALID_SESSION;
+    }
+
+    //Set the decrypted data length to the payload size obtained from the message
+    decrypted_data_length = req_message->message_aes_gcm_data.payload_size;
+
+    header_size = sizeof(secure_message_t);
+    expected_payload_size = req_message_size - header_size;
+
+    //Verify the size of the payload
+    if(expected_payload_size != decrypted_data_length)
+        return INVALID_PARAMETER_ERROR;
+
+    memset(&l_tag, 0, 16);
+    plain_text_offset = decrypted_data_length;
+    decrypted_data = (uint8_t*)malloc(decrypted_data_length);
+    if(!decrypted_data)
+    {
+            return MALLOC_ERROR;
+    }
+
+    memset(decrypted_data, 0, decrypted_data_length);
+
+    //Decrypt the request message payload from source enclave
+    status = sgx_rijndael128GCM_decrypt(&session_info->active.AEK, req_message->message_aes_gcm_data.payload,
+                decrypted_data_length, decrypted_data,
+                reinterpret_cast<uint8_t *>(&(req_message->message_aes_gcm_data.reserved)),
+                sizeof(req_message->message_aes_gcm_data.reserved), &(req_message->message_aes_gcm_data.payload[plain_text_offset]), plaintext_length,
+                &req_message->message_aes_gcm_data.payload_tag);
+
+    if(SGX_SUCCESS != status)
+    {
+        SAFE_FREE(decrypted_data);
+        return status;
+    }
+
+    //Casting the decrypted data to the marshaling structure type to obtain type of request (generic message exchange/enclave to enclave call)
+    ms = (ms_in_msg_exchange_t *)decrypted_data;
+
+
+    // Verify if the nonce obtained in the request is equal to the session nonce
+    if((uint32_t)*(req_message->message_aes_gcm_data.reserved) != session_info->active.counter || *(req_message->message_aes_gcm_data.reserved) > ((2^32)-2))
+    {
+        SAFE_FREE(decrypted_data);
+        return INVALID_PARAMETER_ERROR;
+    }
+
+    if(ms->msg_type == MESSAGE_EXCHANGE)
+    {
+        //Call the generic secret response generator for message exchange
+        ret = message_exchange_response_generator((char*)decrypted_data, &resp_data, &resp_data_length);
+        if(ret !=0)
+        {
+            SAFE_FREE(decrypted_data);
+            SAFE_FREE(resp_data);
+            return INVALID_SESSION;
+        }
+    }
+    else if(ms->msg_type == ENCLAVE_TO_ENCLAVE_CALL)
+    {
+        //Call the destination enclave's dispatcher to call the appropriate function in the destination enclave
+        ret = enclave_to_enclave_call_dispatcher((char*)decrypted_data, decrypted_data_length, &resp_data, &resp_data_length);
+        if(ret !=0)
+        {
+            SAFE_FREE(decrypted_data);
+            SAFE_FREE(resp_data);
+            return INVALID_SESSION;
+        }
+    }
+    else
+    {
+        SAFE_FREE(decrypted_data);
+        return INVALID_REQUEST_TYPE_ERROR;
+    }
+
+
+    if(resp_data_length > max_payload_size)
+    {
+        SAFE_FREE(resp_data);
+        SAFE_FREE(decrypted_data);
+        return OUT_BUFFER_LENGTH_ERROR;
+    }
+
+    resp_message_calc_size = sizeof(secure_message_t)+ resp_data_length;
+
+    if(resp_message_calc_size > resp_message_size)
+    {
+        SAFE_FREE(resp_data);
+        SAFE_FREE(decrypted_data);
+        return OUT_BUFFER_LENGTH_ERROR;
+    }
+
+    //Code to build the response back to the Source Enclave
+    temp_resp_message = (secure_message_t*)malloc(resp_message_calc_size);
+    if(!temp_resp_message)
+    {
+            SAFE_FREE(resp_data);
+            SAFE_FREE(decrypted_data);
+            return MALLOC_ERROR;
+    }
+
+    memset(temp_resp_message,0,sizeof(secure_message_t)+ resp_data_length);
+    const uint32_t data2encrypt_length = (uint32_t)resp_data_length;
+    temp_resp_message->session_id = session_info->session_id;
+    temp_resp_message->message_aes_gcm_data.payload_size = data2encrypt_length;
+
+    //Increment the Session Nonce (Replay Protection)
+    session_info->active.counter = session_info->active.counter + 1;
+
+    //Set the response nonce as the session nonce
+    memcpy(&temp_resp_message->message_aes_gcm_data.reserved,&session_info->active.counter,sizeof(session_info->active.counter));
+
+    //Prepare the response message with the encrypted payload
+    status = sgx_rijndael128GCM_encrypt(&session_info->active.AEK, (uint8_t*)resp_data, data2encrypt_length,
+                reinterpret_cast<uint8_t *>(&(temp_resp_message->message_aes_gcm_data.payload)),
+                reinterpret_cast<uint8_t *>(&(temp_resp_message->message_aes_gcm_data.reserved)),
+                sizeof(temp_resp_message->message_aes_gcm_data.reserved), plaintext, plaintext_length,
+                &(temp_resp_message->message_aes_gcm_data.payload_tag));
+
+    if(SGX_SUCCESS != status)
+    {
+        SAFE_FREE(resp_data);
+        SAFE_FREE(decrypted_data);
+        SAFE_FREE(temp_resp_message);
+        return status;
+    }
+
+    memset(resp_message, 0, sizeof(secure_message_t)+ resp_data_length);
+    memcpy(resp_message, temp_resp_message, sizeof(secure_message_t)+ resp_data_length);
+
+    SAFE_FREE(decrypted_data);
+    SAFE_FREE(resp_data);
+    SAFE_FREE(temp_resp_message);
+
+    return SUCCESS;
+}
+
+//Close a current session
+ATTESTATION_STATUS close_session(sgx_enclave_id_t src_enclave_id,
+                        sgx_enclave_id_t dest_enclave_id)
+{
+    sgx_status_t status;
+
+    uint32_t retstatus;
+
+    //Ocall to ask the destination enclave to end the session
+    status = end_session_ocall(&retstatus, src_enclave_id, dest_enclave_id);
+    if (status == SGX_SUCCESS)
+    {
+        if ((ATTESTATION_STATUS)retstatus != SUCCESS)
+            return ((ATTESTATION_STATUS)retstatus);
+    }
+    else
+    {
+        return ATTESTATION_SE_ERROR;
+    }
+    return SUCCESS;
+}
+
+//Respond to the request from the Source Enclave to close the session
+ATTESTATION_STATUS end_session(sgx_enclave_id_t src_enclave_id)
+{
+    ATTESTATION_STATUS status = SUCCESS;
+    int i;
+    dh_session_t session_info;
+    uint32_t session_id;
+
+    //Get the session information from the map corresponding to the source enclave id
+    std::map<sgx_enclave_id_t, dh_session_t>::iterator it = g_dest_session_info_map.find(src_enclave_id);
+    if(it != g_dest_session_info_map.end())
+    {
+        session_info = it->second;
+    }
+    else
+    {
+        return INVALID_SESSION;
+    }
+
+    session_id = session_info.session_id;
+    //Erase the session information for the current session
+    g_dest_session_info_map.erase(src_enclave_id);
+
+    //Update the session id tracker
+    if (g_session_count > 0)
+    {
+        //check if session exists
+        for (i=1; i <= MAX_SESSION_COUNT; i++)
+        {
+            if(g_session_id_tracker[i-1] != NULL && g_session_id_tracker[i-1]->session_id == session_id)
+            {
+                memset(g_session_id_tracker[i-1], 0, sizeof(session_id_tracker_t));
+                SAFE_FREE(g_session_id_tracker[i-1]);
+                g_session_count--;
+                break;
+            }
+        }
+    }
+
+    return status;
+
+}
+
+
+//Returns a new sessionID for the source destination session
+ATTESTATION_STATUS generate_session_id(uint32_t *session_id)
+{
+    ATTESTATION_STATUS status = SUCCESS;
+
+    if(!session_id)
+    {
+        return INVALID_PARAMETER_ERROR;
+    }
+    //if the session structure is untintialized, set that as the next session ID
+    for (int i = 0; i < MAX_SESSION_COUNT; i++)
+    {
+        if (g_session_id_tracker[i] == NULL)
+        {
+            *session_id = i;
+            return status;
+        }
+    }
+
+    status = NO_AVAILABLE_SESSION_ERROR;
+
+    return status;
+
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/LocalAttestationCode/EnclaveMessageExchange.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "datatypes.h"
+#include "sgx_eid.h"
+#include "sgx_trts.h"
+#include <map>
+#include "dh_session_protocol.h"
+
+#ifndef LOCALATTESTATION_H_
+#define LOCALATTESTATION_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint32_t SGXAPI create_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, dh_session_t *p_session_info);
+uint32_t SGXAPI send_request_receive_response(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, dh_session_t *p_session_info, char *inp_buff, size_t inp_buff_len, size_t max_out_buff_size, char **out_buff, size_t* out_buff_len);
+uint32_t SGXAPI close_session(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/LocalAttestationCode/LocalAttestationCode.edl

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+enclave  {
+    include "sgx_eid.h"
+    include "datatypes.h"
+    include "../Include/dh_session_protocol.h"
+    trusted{
+        public uint32_t session_request(sgx_enclave_id_t src_enclave_id, [out] sgx_dh_msg1_t *dh_msg1, [out] uint32_t *session_id);
+        public uint32_t exchange_report(sgx_enclave_id_t src_enclave_id, [in] sgx_dh_msg2_t *dh_msg2, [out] sgx_dh_msg3_t *dh_msg3, uint32_t session_id);
+        public uint32_t generate_response(sgx_enclave_id_t src_enclave_id, [in, size = req_message_size] secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, [out, size=resp_message_size] secure_message_t* resp_message, size_t resp_message_size );
+        public uint32_t end_session(sgx_enclave_id_t src_enclave_id);        
+    };
+
+    untrusted{
+        uint32_t session_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, [in, out] sgx_dh_msg1_t *dh_msg1,[in, out] uint32_t *session_id);
+        uint32_t exchange_report_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, [in, out] sgx_dh_msg2_t *dh_msg2, [in, out] sgx_dh_msg3_t *dh_msg3, uint32_t session_id);
+        uint32_t send_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, [in, size = req_message_size] secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, [out, size=resp_message_size] secure_message_t* resp_message, size_t resp_message_size);
+        uint32_t end_session_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+        void ocall_print_string([in, string] const char *str);
+    };
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/LocalAttestationCode/datatypes.h

@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "sgx_report.h"
+#include "sgx_eid.h"
+#include "sgx_ecp_types.h"
+#include "sgx_dh.h"
+#include "sgx_tseal.h"
+
+#ifndef DATATYPES_H_
+#define DATATYPES_H_
+
+#define DH_KEY_SIZE        20
+#define NONCE_SIZE         16
+#define MAC_SIZE           16
+#define MAC_KEY_SIZE       16
+#define PADDING_SIZE       16
+
+#define TAG_SIZE        16
+#define IV_SIZE            12
+
+#define DERIVE_MAC_KEY      0x0
+#define DERIVE_SESSION_KEY  0x1
+#define DERIVE_VK1_KEY      0x3
+#define DERIVE_VK2_KEY      0x4
+
+#define CLOSED 0x0
+#define IN_PROGRESS 0x1
+#define ACTIVE 0x2
+
+#define MESSAGE_EXCHANGE 0x0
+#define ENCLAVE_TO_ENCLAVE_CALL 0x1
+
+#define INVALID_ARGUMENT                   -2   ///< Invalid function argument
+#define LOGIC_ERROR                        -3   ///< Functional logic error
+#define FILE_NOT_FOUND                     -4   ///< File not found
+
+#define SAFE_FREE(ptr)     {if (NULL != (ptr)) {free(ptr); (ptr)=NULL;}}
+
+#define VMC_ATTRIBUTE_MASK  0xFFFFFFFFFFFFFFCB
+
+typedef uint8_t dh_nonce[NONCE_SIZE];
+typedef uint8_t cmac_128[MAC_SIZE];
+
+#pragma pack(push, 1)
+
+//Format of the AES-GCM message being exchanged between the source and the destination enclaves
+typedef struct _secure_message_t
+{
+    uint32_t session_id; //Session ID identifyting the session to which the message belongs
+    sgx_aes_gcm_data_t message_aes_gcm_data;    
+}secure_message_t;
+
+//Format of the input function parameter structure
+typedef struct _ms_in_msg_exchange_t {
+    uint32_t msg_type; //Type of Call E2E or general message exchange
+    uint32_t target_fn_id; //Function Id to be called in Destination. Is valid only when msg_type=ENCLAVE_TO_ENCLAVE_CALL
+    uint32_t inparam_buff_len; //Length of the serialized input parameters
+    char inparam_buff[]; //Serialized input parameters
+} ms_in_msg_exchange_t;
+
+//Format of the return value and output function parameter structure
+typedef struct _ms_out_msg_exchange_t {
+    uint32_t retval_len; //Length of the return value
+    uint32_t ret_outparam_buff_len; //Length of the serialized return value and output parameters
+    char ret_outparam_buff[]; //Serialized return value and output parameters
+} ms_out_msg_exchange_t;
+
+//Session Tracker to generate session ids
+typedef struct _session_id_tracker_t
+{
+    uint32_t          session_id;
+}session_id_tracker_t;
+
+#pragma pack(pop)
+
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/LocalAttestationCode/error_codes.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef ERROR_CODES_H_
+#define ERROR_CODES_H_
+
+typedef uint32_t ATTESTATION_STATUS;
+
+#define SUCCESS                          0x00
+#define INVALID_PARAMETER                0xE1
+#define VALID_SESSION                    0xE2
+#define INVALID_SESSION                  0xE3
+#define ATTESTATION_ERROR                0xE4
+#define ATTESTATION_SE_ERROR             0xE5
+#define IPP_ERROR                        0xE6
+#define NO_AVAILABLE_SESSION_ERROR       0xE7
+#define MALLOC_ERROR                     0xE8
+#define ERROR_TAG_MISMATCH               0xE9
+#define OUT_BUFFER_LENGTH_ERROR          0xEA
+#define INVALID_REQUEST_TYPE_ERROR       0xEB
+#define INVALID_PARAMETER_ERROR          0xEC
+#define ENCLAVE_TRUST_ERROR              0xED
+#define ENCRYPT_DECRYPT_ERROR            0xEE
+#define DUPLICATE_SESSION                0xEF
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Makefile

@@ -0,0 +1,346 @@
+#
+# Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of Intel Corporation nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#
+
+######## SGX SDK Settings ########
+
+SGX_SDK ?= /opt/intel/sgxsdk
+SGX_MODE ?= HW
+SGX_ARCH ?= x64
+SGX_DEBUG ?= 1
+
+ifeq ($(shell getconf LONG_BIT), 32)
+	SGX_ARCH := x86
+else ifeq ($(findstring -m32, $(CXXFLAGS)), -m32)
+	SGX_ARCH := x86
+endif
+
+ifeq ($(SGX_ARCH), x86)
+	SGX_COMMON_CFLAGS := -m32
+	SGX_LIBRARY_PATH := $(SGX_SDK)/lib
+	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x86/sgx_sign
+	SGX_EDGER8R := $(SGX_SDK)/bin/x86/sgx_edger8r
+else
+	SGX_COMMON_CFLAGS := -m64
+	SGX_LIBRARY_PATH := $(SGX_SDK)/lib64
+	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x64/sgx_sign
+	SGX_EDGER8R := $(SGX_SDK)/bin/x64/sgx_edger8r
+endif
+
+ifeq ($(SGX_DEBUG), 1)
+ifeq ($(SGX_PRERELEASE), 1)
+$(error Cannot set SGX_DEBUG and SGX_PRERELEASE at the same time!!)
+endif
+endif
+
+ifeq ($(SGX_DEBUG), 1)
+	SGX_COMMON_CFLAGS += -O0 -g
+else
+	SGX_COMMON_CFLAGS += -O2
+endif
+
+######## Library Settings ########
+
+Trust_Lib_Name := libLocalAttestation_Trusted.a
+TrustLib_Cpp_Files := $(wildcard LocalAttestationCode/*.cpp)
+TrustLib_Cpp_Objects := $(TrustLib_Cpp_Files:.cpp=.o)
+TrustLib_Include_Paths := -I$(SGX_SDK)/include -I$(SGX_SDK)/include/tlibc -I$(SGX_SDK)/include/libcxx -I$(SGX_SDK)/include/epid -I./Include
+TrustLib_Compile_Flags := $(SGX_COMMON_CFLAGS) -nostdinc -fvisibility=hidden -fpie -fstack-protector  $(TrustLib_Include_Paths)
+TrustLib_Compile_Cxx_Flags :=  -std=c++11 -nostdinc++
+
+UnTrustLib_Name := libLocalAttestation_unTrusted.a
+UnTrustLib_Cpp_Files := $(wildcard Untrusted_LocalAttestation/*.cpp)
+UnTrustLib_Cpp_Objects := $(UnTrustLib_Cpp_Files:.cpp=.o)
+UnTrustLib_Include_Paths := -I$(SGX_SDK)/include -I$(SGX_SDK)/include/ippcp -I./Include -I./LocalAttestationCode
+UnTrustLib_Compile_Flags := $(SGX_COMMON_CFLAGS) -fPIC -Wno-attributes -std=c++11 $(UnTrustLib_Include_Paths)
+
+######## App Settings ########
+
+ifneq ($(SGX_MODE), HW)
+	Urts_Library_Name := sgx_urts_sim
+else
+	Urts_Library_Name := sgx_urts
+endif
+
+App_Cpp_Files := $(wildcard App/*.cpp)
+App_Include_Paths := -I$(SGX_SDK)/include -I$(SGX_SDK)/include/ippcp -I./Include -I./LocalAttestationCode
+
+App_Compile_Flags := $(SGX_COMMON_CFLAGS) -fPIC -Wno-attributes $(App_Include_Paths)
+# Three configuration modes - Debug, prerelease, release
+#   Debug - Macro DEBUG enabled.
+#   Prerelease - Macro NDEBUG and EDEBUG enabled.
+#   Release - Macro NDEBUG enabled.
+ifeq ($(SGX_DEBUG), 1)
+	App_Compile_Flags += -DDEBUG -UNDEBUG -UEDEBUG
+else ifeq ($(SGX_PRERELEASE), 1)
+	App_Compile_Flags += -DNDEBUG -DEDEBUG -UDEBUG
+else
+	App_Compile_Flags += -DNDEBUG -UEDEBUG -UDEBUG
+endif
+
+App_Link_Flags := $(SGX_COMMON_CFLAGS) -L$(SGX_LIBRARY_PATH) -l$(Urts_Library_Name) -L. -lpthread -lLocalAttestation_unTrusted 
+
+ifneq ($(SGX_MODE), HW)
+	App_Link_Flags += -lsgx_uae_service_sim
+else
+	App_Link_Flags += -lsgx_uae_service
+endif
+
+App_Cpp_Objects := $(App_Cpp_Files:.cpp=.o)
+App_Name := app
+
+######## Enclave Settings ########
+
+Enclave1_Version_Script := Enclave1/Enclave1.lds
+Enclave2_Version_Script := Enclave2/Enclave2.lds
+Enclave3_Version_Script := Enclave3/Enclave3.lds
+
+ifneq ($(SGX_MODE), HW)
+	Trts_Library_Name := sgx_trts_sim
+	Service_Library_Name := sgx_tservice_sim
+else
+	Trts_Library_Name := sgx_trts
+	Service_Library_Name := sgx_tservice
+endif
+Crypto_Library_Name := sgx_tcrypto
+
+Enclave_Cpp_Files_1 := $(wildcard Enclave1/*.cpp)
+Enclave_Cpp_Files_2 := $(wildcard Enclave2/*.cpp)
+Enclave_Cpp_Files_3 := $(wildcard Enclave3/*.cpp)
+Enclave_Include_Paths := -I$(SGX_SDK)/include -I$(SGX_SDK)/include/tlibc -I$(SGX_SDK)/include/libcxx -I./LocalAttestationCode -I./Include
+
+CC_BELOW_4_9 := $(shell expr "`$(CC) -dumpversion`" \< "4.9")
+ifeq ($(CC_BELOW_4_9), 1)
+	Enclave_Compile_Flags := $(SGX_COMMON_CFLAGS) -nostdinc -fvisibility=hidden -fpie -ffunction-sections -fdata-sections -fstack-protector
+else
+	Enclave_Compile_Flags := $(SGX_COMMON_CFLAGS) -nostdinc -fvisibility=hidden -fpie -ffunction-sections -fdata-sections -fstack-protector-strong
+endif
+
+Enclave_Compile_Flags += $(Enclave_Include_Paths)
+
+# To generate a proper enclave, it is recommended to follow below guideline to link the trusted libraries:
+#    1. Link sgx_trts with the `--whole-archive' and `--no-whole-archive' options,
+#       so that the whole content of trts is included in the enclave.
+#    2. For other libraries, you just need to pull the required symbols.
+#       Use `--start-group' and `--end-group' to link these libraries.
+# Do NOT move the libraries linked with `--start-group' and `--end-group' within `--whole-archive' and `--no-whole-archive' options.
+# Otherwise, you may get some undesirable errors.
+Common_Enclave_Link_Flags := $(SGX_COMMON_CFLAGS) -Wl,--no-undefined -nostdlib -nodefaultlibs -nostartfiles -L$(SGX_LIBRARY_PATH) \
+	-Wl,--whole-archive -l$(Trts_Library_Name) -Wl,--no-whole-archive \
+	-Wl,--start-group -lsgx_tstdc -lsgx_tcxx -l$(Crypto_Library_Name) -L. -lLocalAttestation_Trusted -l$(Service_Library_Name) -Wl,--end-group \
+	-Wl,-Bstatic -Wl,-Bsymbolic -Wl,--no-undefined \
+	-Wl,-pie,-eenclave_entry -Wl,--export-dynamic  \
+	-Wl,--defsym,__ImageBase=0 -Wl,--gc-sections
+Enclave1_Link_Flags := $(Common_Enclave_Link_Flags) -Wl,--version-script=$(Enclave1_Version_Script)
+Enclave2_Link_Flags := $(Common_Enclave_Link_Flags) -Wl,--version-script=$(Enclave2_Version_Script)
+Enclave3_Link_Flags := $(Common_Enclave_Link_Flags) -Wl,--version-script=$(Enclave3_Version_Script)
+
+Enclave_Cpp_Objects_1 := $(Enclave_Cpp_Files_1:.cpp=.o)
+Enclave_Cpp_Objects_2 := $(Enclave_Cpp_Files_2:.cpp=.o)
+Enclave_Cpp_Objects_3 := $(Enclave_Cpp_Files_3:.cpp=.o)
+
+Enclave_Name_1 := libenclave1.so
+Enclave_Name_2 := libenclave2.so
+Enclave_Name_3 := libenclave3.so
+
+ifeq ($(SGX_MODE), HW)
+ifeq ($(SGX_DEBUG), 1)
+	Build_Mode = HW_DEBUG
+else ifeq ($(SGX_PRERELEASE), 1)
+	Build_Mode = HW_PRERELEASE
+else
+	Build_Mode = HW_RELEASE
+endif
+else
+ifeq ($(SGX_DEBUG), 1)
+	Build_Mode = SIM_DEBUG
+else ifeq ($(SGX_PRERELEASE), 1)
+	Build_Mode = SIM_PRERELEASE
+else
+	Build_Mode = SIM_RELEASE
+endif
+endif
+
+ifeq ($(Build_Mode), HW_RELEASE)
+all: .config_$(Build_Mode)_$(SGX_ARCH) $(Trust_Lib_Name) $(UnTrustLib_Name) Enclave1.so Enclave2.so Enclave3.so $(App_Name)
+	@echo "The project has been built in release hardware mode."
+	@echo "Please sign the enclaves (Enclave1.so, Enclave2.so, Enclave3.so) first with your signing keys before you run the $(App_Name) to launch and access the enclave."
+	@echo "To sign the enclaves use the following commands:"
+	@echo "   $(SGX_ENCLAVE_SIGNER) sign -key <key1> -enclave Enclave1.so -out <$(Enclave_Name_1)> -config Enclave1/Enclave1.config.xml"
+	@echo "   $(SGX_ENCLAVE_SIGNER) sign -key <key2> -enclave Enclave2.so -out <$(Enclave_Name_2)> -config Enclave2/Enclave2.config.xml"
+	@echo "   $(SGX_ENCLAVE_SIGNER) sign -key <key3> -enclave Enclave3.so -out <$(Enclave_Name_3)> -config Enclave3/Enclave3.config.xml"
+	@echo "You can also sign the enclaves using an external signing tool."
+	@echo "To build the project in simulation mode set SGX_MODE=SIM. To build the project in prerelease mode set SGX_PRERELEASE=1 and SGX_MODE=HW."
+else
+all: .config_$(Build_Mode)_$(SGX_ARCH) $(Trust_Lib_Name) $(UnTrustLib_Name) $(Enclave_Name_1) $(Enclave_Name_2) $(Enclave_Name_3) $(App_Name)
+ifeq ($(Build_Mode), HW_DEBUG)
+	@echo "The project has been built in debug hardware mode."
+else ifeq ($(Build_Mode), SIM_DEBUG)
+	@echo "The project has been built in debug simulation mode."
+else ifeq ($(Build_Mode), HW_PRERELEASE)
+	@echo "The project has been built in pre-release hardware mode."
+else ifeq ($(Build_Mode), SIM_PRERELEASE)
+	@echo "The project has been built in pre-release simulation mode."
+else
+	@echo "The project has been built in release simulation mode."
+endif
+endif
+
+.config_$(Build_Mode)_$(SGX_ARCH):
+	@rm -rf .config_* $(App_Name) *.so *.a App/*.o Enclave1/*.o Enclave1/*_t.* Enclave1/*_u.* Enclave2/*.o Enclave2/*_t.* Enclave2/*_u.* Enclave3/*.o Enclave3/*_t.* Enclave3/*_u.*              LocalAttestationCode/*.o Untrusted_LocalAttestation/*.o LocalAttestationCode/*_t.* 
+	@touch .config_$(Build_Mode)_$(SGX_ARCH)
+
+######## Library Objects ########
+
+LocalAttestationCode/LocalAttestationCode_t.c LocalAttestationCode/LocalAttestationCode_t.h : $(SGX_EDGER8R) LocalAttestationCode/LocalAttestationCode.edl
+	@cd LocalAttestationCode && $(SGX_EDGER8R) --trusted ../LocalAttestationCode/LocalAttestationCode.edl --search-path $(SGX_SDK)/include 
+	@echo "GEN  =>  $@"
+
+LocalAttestationCode/LocalAttestationCode_t.o: LocalAttestationCode/LocalAttestationCode_t.c
+	@$(CC) $(TrustLib_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+LocalAttestationCode/%.o: LocalAttestationCode/%.cpp LocalAttestationCode/LocalAttestationCode_t.h
+	@$(CXX) $(TrustLib_Compile_Flags) $(TrustLib_Compile_Cxx_Flags) -c $< -o $@
+	@echo "CC   <= $<"
+
+$(Trust_Lib_Name): LocalAttestationCode/LocalAttestationCode_t.o $(TrustLib_Cpp_Objects)
+	@$(AR) rcs $@ $^
+	@echo "GEN  =>  $@"
+
+Untrusted_LocalAttestation/%.o: Untrusted_LocalAttestation/%.cpp
+	@$(CXX) $(UnTrustLib_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+$(UnTrustLib_Name): $(UnTrustLib_Cpp_Objects)
+	@$(AR) rcs $@ $^
+	@echo "GEN  =>  $@"
+
+######## App Objects ########
+Enclave1/Enclave1_u.c Enclave1/Enclave1_u.h: $(SGX_EDGER8R) Enclave1/Enclave1.edl
+	@cd Enclave1 && $(SGX_EDGER8R) --use-prefix --untrusted ../Enclave1/Enclave1.edl --search-path $(SGX_SDK)/include 
+	@echo "GEN  =>  $@"
+
+App/Enclave1_u.o: Enclave1/Enclave1_u.c
+	@$(CC) $(App_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+Enclave2/Enclave2_u.c Enclave2/Enclave2_u.h: $(SGX_EDGER8R) Enclave2/Enclave2.edl
+	@cd Enclave2 && $(SGX_EDGER8R) --use-prefix --untrusted ../Enclave2/Enclave2.edl --search-path $(SGX_SDK)/include 
+	@echo "GEN  =>  $@"
+
+App/Enclave2_u.o: Enclave2/Enclave2_u.c
+	@$(CC) $(App_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+Enclave3/Enclave3_u.c Enclave3/Enclave3_u.h: $(SGX_EDGER8R) Enclave3/Enclave3.edl
+	@cd Enclave3 && $(SGX_EDGER8R) --use-prefix --untrusted ../Enclave3/Enclave3.edl --search-path $(SGX_SDK)/include 
+	@echo "GEN  =>  $@"
+
+App/Enclave3_u.o: Enclave3/Enclave3_u.c
+	@$(CC) $(App_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+App/%.o: App/%.cpp Enclave1/Enclave1_u.h Enclave2/Enclave2_u.h Enclave3/Enclave3_u.h
+	@$(CXX) $(App_Compile_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+$(App_Name): App/Enclave1_u.o App/Enclave2_u.o App/Enclave3_u.o $(App_Cpp_Objects) $(UnTrustLib_Name)
+	@$(CXX) $^ -o $@ $(App_Link_Flags)
+	@echo "LINK =>  $@"
+
+
+######## Enclave Objects ########
+
+Enclave1/Enclave1_t.c Enclave1/Enclave1_t.h: $(SGX_EDGER8R) Enclave1/Enclave1.edl
+	@cd Enclave1 && $(SGX_EDGER8R) --use-prefix --trusted ../Enclave1/Enclave1.edl --search-path $(SGX_SDK)/include 
+	@echo "GEN  =>  $@"
+
+Enclave1/Enclave1_t.o: Enclave1/Enclave1_t.c
+	@$(CC) $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+Enclave1/%.o: Enclave1/%.cpp Enclave1/Enclave1_t.h
+	@$(CXX) -std=c++11 -nostdinc++ $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+Enclave1.so: Enclave1/Enclave1_t.o $(Enclave_Cpp_Objects_1) $(Trust_Lib_Name)
+	@$(CXX) Enclave1/Enclave1_t.o $(Enclave_Cpp_Objects_1) -o $@ $(Enclave1_Link_Flags)
+	@echo "LINK =>  $@"
+
+$(Enclave_Name_1): Enclave1.so
+	@$(SGX_ENCLAVE_SIGNER) sign -key Enclave1/Enclave1_private.pem -enclave Enclave1.so -out $@ -config Enclave1/Enclave1.config.xml
+	@echo "SIGN =>  $@"
+
+Enclave2/Enclave2_t.c: $(SGX_EDGER8R) Enclave2/Enclave2.edl
+	@cd Enclave2 && $(SGX_EDGER8R)  --use-prefix --trusted ../Enclave2/Enclave2.edl --search-path $(SGX_SDK)/include
+	@echo "GEN  =>  $@"
+
+Enclave2/Enclave2_t.o: Enclave2/Enclave2_t.c
+	@$(CC) $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+Enclave2/%.o: Enclave2/%.cpp
+	@$(CXX) -std=c++11 -nostdinc++ $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+Enclave2.so: Enclave2/Enclave2_t.o $(Enclave_Cpp_Objects_2) $(Trust_Lib_Name)
+	@$(CXX) Enclave2/Enclave2_t.o $(Enclave_Cpp_Objects_2) -o $@ $(Enclave2_Link_Flags)
+	@echo "LINK =>  $@"
+
+$(Enclave_Name_2): Enclave2.so
+	@$(SGX_ENCLAVE_SIGNER) sign -key Enclave2/Enclave2_private.pem -enclave Enclave2.so -out $@ -config Enclave2/Enclave2.config.xml
+	@echo "SIGN =>  $@"
+
+Enclave3/Enclave3_t.c: $(SGX_EDGER8R) Enclave3/Enclave3.edl
+	@cd Enclave3 && $(SGX_EDGER8R)  --use-prefix --trusted ../Enclave3/Enclave3.edl --search-path $(SGX_SDK)/include
+	@echo "GEN  =>  $@"
+
+Enclave3/Enclave3_t.o: Enclave3/Enclave3_t.c
+	@$(CC) $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+Enclave3/%.o: Enclave3/%.cpp
+	@$(CXX) -std=c++11 -nostdinc++ $(Enclave_Compile_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+Enclave3.so: Enclave3/Enclave3_t.o $(Enclave_Cpp_Objects_3) $(Trust_Lib_Name)
+	@$(CXX) Enclave3/Enclave3_t.o $(Enclave_Cpp_Objects_3) -o $@ $(Enclave3_Link_Flags)
+	@echo "LINK =>  $@"
+
+$(Enclave_Name_3): Enclave3.so
+	@$(SGX_ENCLAVE_SIGNER) sign -key Enclave3/Enclave3_private.pem -enclave Enclave3.so -out $@ -config Enclave3/Enclave3.config.xml
+	@echo "SIGN =>  $@"
+
+######## Clean ########
+.PHONY: clean
+
+clean:
+	@rm -rf .config_* $(App_Name) *.so *.a App/*.o Enclave1/*.o Enclave1/*_t.* Enclave1/*_u.* Enclave2/*.o Enclave2/*_t.* Enclave2/*_u.* Enclave3/*.o Enclave3/*_t.* Enclave3/*_u.* LocalAttestationCode/*.o Untrusted_LocalAttestation/*.o LocalAttestationCode/*_t.*

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/README.txt

@@ -0,0 +1,29 @@
+---------------------------
+Purpose of LocalAttestation
+---------------------------
+The project demonstrates:
+- How to establish a protected channel
+- Secret message exchange using enclave to enclave function calls
+
+------------------------------------
+How to Build/Execute the Sample Code
+------------------------------------
+1. Install Intel(R) Software Guard Extensions (Intel(R) SGX) SDK for Linux* OS
+2. Make sure your environment is set:
+    $ source ${sgx-sdk-install-path}/environment
+3. Build the project with the prepared Makefile:
+    a. Hardware Mode, Debug build:
+        $ make
+    b. Hardware Mode, Pre-release build:
+        $ make SGX_PRERELEASE=1 SGX_DEBUG=0
+    c. Hardware Mode, Release build:
+        $ make SGX_DEBUG=0
+    d. Simulation Mode, Debug build:
+        $ make SGX_MODE=SIM
+    e. Simulation Mode, Pre-release build:
+        $ make SGX_MODE=SIM SGX_PRERELEASE=1 SGX_DEBUG=0
+    f. Simulation Mode, Release build:
+        $ make SGX_MODE=SIM SGX_DEBUG=0
+4. Execute the binary directly:
+    $ ./app
+5. Remember to "make clean" before switching build mode

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Untrusted_LocalAttestation/UntrustedEnclaveMessageExchange.cpp

@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "sgx_eid.h"
+#include "error_codes.h"
+#include "datatypes.h"
+#include "sgx_urts.h"
+#include "UntrustedEnclaveMessageExchange.h"
+#include "sgx_dh.h"
+#include <map>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+std::map<sgx_enclave_id_t, uint32_t>g_enclave_id_map;
+extern sgx_enclave_id_t e1_enclave_id;
+
+//Makes an sgx_ecall to the destination enclave to get session id and message1
+ATTESTATION_STATUS session_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, sgx_dh_msg1_t* dh_msg1, uint32_t* session_id)
+{
+	uint32_t status = 0;
+	sgx_status_t ret = SGX_SUCCESS;
+
+    // printf("[OCALL IPC] Generating msg1 and session_id for Enclave1\n");
+    // for session_id
+    printf("[OCALL IPC] Passing SessionID to shared memory for Enclave1\n");
+    key_t key_session_id = ftok("../..", 3);
+    int shmid_session_id = shmget(key_session_id, sizeof(uint32_t), 0666|IPC_CREAT);
+    uint32_t* tmp_session_id = (uint32_t*)shmat(shmid_session_id, (void*)0, 0);
+    memcpy(tmp_session_id, session_id, sizeof(uint32_t));
+
+    // for msg1
+    printf("[OCALL IPC] Passing message1 to shared memory for Enclave1\n");
+    key_t key_msg1 = ftok("../..", 2);
+    int shmid_msg1 = shmget(key_msg1, sizeof(sgx_dh_msg1_t), 0666|IPC_CREAT);
+    sgx_dh_msg1_t* tmp_msg1 = (sgx_dh_msg1_t *)shmat(shmid_msg1, (void*)0, 0);
+    memcpy(tmp_msg1, dh_msg1, sizeof(sgx_dh_msg1_t));
+
+    shmdt(tmp_msg1);
+    shmdt(tmp_session_id);
+
+    // let enclave1 to receive msg1
+    printf("[OCALL IPC] Waiting for Enclave1 to process SessionID and message1...\n");
+    sleep(5);
+
+	if (ret == SGX_SUCCESS)
+		return (ATTESTATION_STATUS)status;
+	else
+	    return INVALID_SESSION;
+
+}
+//Makes an sgx_ecall to the destination enclave sends message2 from the source enclave and gets message 3 from the destination enclave
+ATTESTATION_STATUS exchange_report_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, sgx_dh_msg2_t *dh_msg2, sgx_dh_msg3_t *dh_msg3, uint32_t session_id)
+{
+	uint32_t status = 0;
+	sgx_status_t ret = SGX_SUCCESS;
+
+    if (dh_msg3 == NULL)
+    {
+        // get msg2 from Enclave1
+        printf("[OCALL IPC] Message2 should be ready\n");
+        printf("[OCALL IPC] Retrieving message2 from shared memory\n");
+        key_t key_msg2 = ftok("../..", 4);
+        int shmid_msg2 = shmget(key_msg2, sizeof(sgx_dh_msg2_t), 0666|IPC_CREAT);
+        sgx_dh_msg2_t* tmp_msg2 = (sgx_dh_msg2_t *)shmat(shmid_msg2, (void*)0, 0);
+        memcpy(dh_msg2, tmp_msg2, sizeof(sgx_dh_msg2_t));
+        shmdt(tmp_msg2);
+    }
+
+    // ret = Enclave1_exchange_report(src_enclave_id, &status, 0, dh_msg2, dh_msg3, session_id);
+
+    else
+    {
+        // pass msg3 to shm for Enclave
+        printf("[OCALL IPC] Passing message3 to shared memory for Enclave1\n");
+        key_t key_msg3 = ftok("../..", 5);
+        int shmid_msg3 = shmget(key_msg3, sizeof(sgx_dh_msg3_t), 0666|IPC_CREAT);
+        sgx_dh_msg3_t* tmp_msg3 = (sgx_dh_msg3_t *)shmat(shmid_msg3, (void*)0, 0);
+        memcpy(tmp_msg3, dh_msg3, sizeof(sgx_dh_msg3_t));
+        shmdt(tmp_msg3);
+
+        // wait for Enclave1 to process msg3
+        printf("[OCALL IPC] Waiting for Enclave1 to process message3...\n");
+        sleep(5);
+    }
+
+	if (ret == SGX_SUCCESS)
+		return (ATTESTATION_STATUS)status;
+	else
+	    return INVALID_SESSION;
+
+}
+
+//Make an sgx_ecall to the destination enclave function that generates the actual response
+ATTESTATION_STATUS send_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id,secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, secure_message_t* resp_message, size_t resp_message_size)
+{
+	uint32_t status = 0;
+    sgx_status_t ret = SGX_SUCCESS;
+	uint32_t temp_enclave_no;
+
+	std::map<sgx_enclave_id_t, uint32_t>::iterator it = g_enclave_id_map.find(dest_enclave_id);
+    if(it != g_enclave_id_map.end())
+	{
+		temp_enclave_no = it->second;
+	}
+    else
+	{
+		return INVALID_SESSION;
+	}
+
+	switch(temp_enclave_no)
+	{
+		case 1:
+			ret = Enclave1_generate_response(dest_enclave_id, &status, src_enclave_id, req_message, req_message_size, max_payload_size, resp_message, resp_message_size);
+			break;
+		case 2:
+			ret = Enclave2_generate_response(dest_enclave_id, &status, src_enclave_id, req_message, req_message_size, max_payload_size, resp_message, resp_message_size);
+			break;
+		case 3:
+			ret = Enclave3_generate_response(dest_enclave_id, &status, src_enclave_id, req_message, req_message_size, max_payload_size, resp_message, resp_message_size);
+			break;
+	}
+	if (ret == SGX_SUCCESS)
+		return (ATTESTATION_STATUS)status;
+	else
+	    return INVALID_SESSION;
+
+}
+
+//Make an sgx_ecall to the destination enclave to close the session
+ATTESTATION_STATUS end_session_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id)
+{
+	uint32_t status = 0;
+	sgx_status_t ret = SGX_SUCCESS;
+	uint32_t temp_enclave_no;
+
+	std::map<sgx_enclave_id_t, uint32_t>::iterator it = g_enclave_id_map.find(dest_enclave_id);
+    if(it != g_enclave_id_map.end())
+	{
+		temp_enclave_no = it->second;
+	}
+    else
+	{
+		return INVALID_SESSION;
+	}
+
+	switch(temp_enclave_no)
+	{
+		case 1:
+			ret = Enclave1_end_session(dest_enclave_id, &status, src_enclave_id);
+			break;
+		case 2:
+			ret = Enclave2_end_session(dest_enclave_id, &status, src_enclave_id);
+			break;
+		case 3:
+			ret = Enclave3_end_session(dest_enclave_id, &status, src_enclave_id);
+			break;
+	}
+	if (ret == SGX_SUCCESS)
+		return (ATTESTATION_STATUS)status;
+	else
+	    return INVALID_SESSION;
+
+}
+
+void ocall_print_string(const char *str)
+{
+    printf("%s", str);
+}

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/ProcessLocalAttestation/Enclave2/Untrusted_LocalAttestation/UntrustedEnclaveMessageExchange.h

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "sgx_eid.h"
+#include "error_codes.h"
+#include "datatypes.h"
+#include "sgx_urts.h"
+#include "dh_session_protocol.h"
+#include "sgx_dh.h"
+#include <cstddef>
+
+
+#ifndef ULOCALATTESTATION_H_
+#define ULOCALATTESTATION_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+sgx_status_t Enclave1_session_request(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg1_t* dh_msg1, uint32_t* session_id);
+sgx_status_t Enclave1_exchange_report(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg2_t* dh_msg2, sgx_dh_msg3_t* dh_msg3, uint32_t session_id);
+sgx_status_t Enclave1_generate_response(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, secure_message_t* resp_message, size_t resp_message_size);
+sgx_status_t Enclave1_end_session(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id);
+
+sgx_status_t Enclave2_session_request(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg1_t* dh_msg1, uint32_t* session_id);
+sgx_status_t Enclave2_exchange_report(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg2_t* dh_msg2, sgx_dh_msg3_t* dh_msg3, uint32_t session_id);
+sgx_status_t Enclave2_generate_response(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, secure_message_t* resp_message, size_t resp_message_size);
+sgx_status_t Enclave2_end_session(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id);
+
+sgx_status_t Enclave3_session_request(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg1_t* dh_msg1, uint32_t* session_id);
+sgx_status_t Enclave3_exchange_report(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, sgx_dh_msg2_t* dh_msg2, sgx_dh_msg3_t* dh_msg3, uint32_t session_id);
+sgx_status_t Enclave3_generate_response(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id, secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, secure_message_t* resp_message, size_t resp_message_size);
+sgx_status_t Enclave3_end_session(sgx_enclave_id_t eid, uint32_t* retval, sgx_enclave_id_t src_enclave_id);
+
+uint32_t session_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, sgx_dh_msg1_t* dh_msg1, uint32_t* session_id);
+uint32_t exchange_report_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, sgx_dh_msg2_t* dh_msg2, sgx_dh_msg3_t* dh_msg3, uint32_t session_id);
+uint32_t send_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, secure_message_t* resp_message, size_t resp_message_size);
+uint32_t end_session_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id);
+void ocall_print_string(const char *str);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/RemoteAttestation/Application/Makefile

@@ -0,0 +1,211 @@
+######## SGX SDK Settings ########
+SGX_SDK ?= /opt/intel/sgxsdk
+SGX_MODE ?= SIM
+SGX_ARCH ?= x64
+
+ifeq ($(shell getconf LONG_BIT), 32)
+	SGX_ARCH := x86
+else ifeq ($(findstring -m32, $(CXXFLAGS)), -m32)
+	SGX_ARCH := x86
+endif
+
+ifeq ($(SGX_ARCH), x86)
+	SGX_COMMON_CFLAGS := -m32
+	SGX_LIBRARY_PATH := $(SGX_SDK)/lib
+	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x86/sgx_sign
+	SGX_EDGER8R := $(SGX_SDK)/bin/x86/sgx_edger8r
+else
+	SGX_COMMON_CFLAGS := -m64
+	SGX_LIBRARY_PATH := $(SGX_SDK)/lib64
+	SGX_ENCLAVE_SIGNER := $(SGX_SDK)/bin/x64/sgx_sign
+	SGX_EDGER8R := $(SGX_SDK)/bin/x64/sgx_edger8r
+endif
+
+ifeq ($(SGX_DEBUG), 1)
+ifeq ($(SGX_PRERELEASE), 1)
+$(error Cannot set SGX_DEBUG and SGX_PRERELEASE at the same time!!)
+endif
+endif
+
+ifeq ($(SGX_DEBUG), 1)
+        SGX_COMMON_CFLAGS += -O0 -g
+else
+        SGX_COMMON_CFLAGS += -O2
+endif
+
+ifeq ($(SUPPLIED_KEY_DERIVATION), 1)
+        SGX_COMMON_CFLAGS += -DSUPPLIED_KEY_DERIVATION
+endif
+
+######## App Settings ########
+
+ifneq ($(SGX_MODE), HW)
+	Urts_Library_Name := sgx_urts_sim
+else
+	Urts_Library_Name := sgx_urts
+endif
+
+
+App_Cpp_Files := isv_app/isv_app.cpp ../Util/LogBase.cpp ../Networking/NetworkManager.cpp ../Networking/Session.cpp ../Networking/Server.cpp \
+../Networking/Client.cpp ../Networking/NetworkManagerServer.cpp ../GoogleMessages/Messages.pb.cpp ../Networking/AbstractNetworkOps.cpp \
+../Util/UtilityFunctions.cpp ../Enclave/Enclave.cpp ../MessageHandler/MessageHandler.cpp ../Util/Base64.cpp
+
+App_Include_Paths := -I../Util -Iservice_provider -I$(SGX_SDK)/include -Iheaders  -I../Networking -Iisv_app -I../GoogleMessages -I/usr/local/include -I../Enclave \
+-I../MessageHandler
+
+App_C_Flags := $(SGX_COMMON_CFLAGS) -fPIC -Wno-attributes $(App_Include_Paths)
+
+# Three configuration modes - Debug, prerelease, release
+#   Debug - Macro DEBUG enabled.
+#   Prerelease - Macro NDEBUG and EDEBUG enabled.
+#   Release - Macro NDEBUG enabled.
+ifeq ($(SGX_DEBUG), 1)
+	App_C_Flags += -DDEBUG -UNDEBUG -UEDEBUG
+else ifeq ($(SGX_PRERELEASE), 1)
+	App_C_Flags += -DNDEBUG -DEDEBUG -UDEBUG
+else
+	App_C_Flags += -DNDEBUG -UEDEBUG -UDEBUG
+endif
+
+App_Cpp_Flags := $(App_C_Flags) -std=c++11 -DEnableServer
+App_Link_Flags := $(SGX_COMMON_CFLAGS) -L$(SGX_LIBRARY_PATH) -l$(Urts_Library_Name) -L. -lsgx_ukey_exchange -lpthread -Wl,-rpath=$(CURDIR)/../sample_libcrypto -Wl,-rpath=$(CURDIR) -llog4cpp -lboost_system -lssl -lcrypto -lboost_thread -lprotobuf -L /usr/local/lib -ljsoncpp
+
+ifneq ($(SGX_MODE), HW)
+	App_Link_Flags += -lsgx_uae_service_sim
+else
+	App_Link_Flags += -lsgx_uae_service
+endif
+
+App_Cpp_Objects := $(App_Cpp_Files:.cpp=.o)
+
+App_Name := app
+
+
+######## Enclave Settings ########
+ifneq ($(SGX_MODE), HW)
+	Trts_Library_Name := sgx_trts_sim
+	Service_Library_Name := sgx_tservice_sim
+else
+	Trts_Library_Name := sgx_trts
+	Service_Library_Name := sgx_tservice
+endif
+Crypto_Library_Name := sgx_tcrypto
+
+Enclave_Cpp_Files := isv_enclave/isv_enclave.cpp
+Enclave_Include_Paths := -I$(SGX_SDK)/include -I$(SGX_SDK)/include/tlibc -I$(SGX_SDK)/include/stlport -I$(SGX_SDK)/include/crypto_px/include -I../Enclave/
+
+Enclave_C_Flags := $(SGX_COMMON_CFLAGS) -nostdinc -fvisibility=hidden -fpie -fstack-protector $(Enclave_Include_Paths)
+Enclave_Cpp_Flags := $(Enclave_C_Flags) -std=c++11 -nostdinc++
+
+# To generate a proper enclave, it is recommended to follow below guideline to link the trusted libraries:
+#    1. Link sgx_trts with the `--whole-archive' and `--no-whole-archive' options,
+#       so that the whole content of trts is included in the enclave.
+#    2. For other libraries, you just need to pull the required symbols.
+#       Use `--start-group' and `--end-group' to link these libraries.
+# Do NOT move the libraries linked with `--start-group' and `--end-group' within `--whole-archive' and `--no-whole-archive' options.
+# Otherwise, you may get some undesirable errors.
+Enclave_Link_Flags := $(SGX_COMMON_CFLAGS) -Wl,--no-undefined -nostdlib -nodefaultlibs -nostartfiles -L$(SGX_LIBRARY_PATH) \
+	-Wl,--whole-archive -l$(Trts_Library_Name) -Wl,--no-whole-archive \
+	-Wl,--start-group -lsgx_tstdc -lsgx_tstdcxx -lsgx_tkey_exchange -l$(Crypto_Library_Name) -l$(Service_Library_Name) -Wl,--end-group \
+	-Wl,-Bstatic -Wl,-Bsymbolic -Wl,--no-undefined \
+	-Wl,-pie,-eenclave_entry -Wl,--export-dynamic  \
+	-Wl,--defsym,__ImageBase=0 \
+	-Wl,--version-script=isv_enclave/isv_enclave.lds
+
+Enclave_Cpp_Objects := $(Enclave_Cpp_Files:.cpp=.o)
+
+Enclave_Name := isv_enclave.so
+Signed_Enclave_Name := isv_enclave.signed.so
+Enclave_Config_File := isv_enclave/isv_enclave.config.xml
+
+ifeq ($(SGX_MODE), HW)
+ifneq ($(SGX_DEBUG), 1)
+ifneq ($(SGX_PRERELEASE), 1)
+Build_Mode = HW_RELEASE
+endif
+endif
+endif
+
+
+.PHONY: all run
+
+ifeq ($(Build_Mode), HW_RELEASE)
+all: $(App_Name) $(Enclave_Name)
+	@echo "The project has been built in release hardware mode."
+	@echo "Please sign the $(Enclave_Name) first with your signing key before you run the $(App_Name) to launch and access the enclave."
+	@echo "To sign the enclave use the command:"
+	@echo "   $(SGX_ENCLAVE_SIGNER) sign -key <your key> -enclave $(Enclave_Name) -out <$(Signed_Enclave_Name)> -config $(Enclave_Config_File)"
+	@echo "You can also sign the enclave using an external signing tool."
+	@echo "To build the project in simulation mode set SGX_MODE=SIM. To build the project in prerelease mode set SGX_PRERELEASE=1 and SGX_MODE=HW."
+else
+all: $(App_Name) $(Signed_Enclave_Name)
+endif
+
+run: all
+ifneq ($(Build_Mode), HW_RELEASE)
+	@$(CURDIR)/$(App_Name) 	
+	@echo "RUN  =>  $(App_Name) [$(SGX_MODE)|$(SGX_ARCH), OK]"
+endif
+
+
+######## App Objects ########
+
+isv_app/isv_enclave_u.c: $(SGX_EDGER8R) isv_enclave/isv_enclave.edl
+	@cd isv_app && $(SGX_EDGER8R) --untrusted ../isv_enclave/isv_enclave.edl --search-path ../isv_enclave --search-path $(SGX_SDK)/include
+	@echo "GEN  =>  $@"
+
+isv_app/isv_enclave_u.o: isv_app/isv_enclave_u.c
+	@$(CC) $(App_C_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+isv_app/%.o: isv_app/%.cpp
+	@$(CXX) $(App_Cpp_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+../MessageHandler/%.o: ../MessageHandler/%.cpp
+	@$(CXX) $(App_Cpp_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+../Util/%.o: ../Util/%.cpp
+	@$(CXX) $(App_Cpp_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+../Networking/%.o: ../Networking/%.cpp
+	@$(CXX) $(App_Cpp_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+../Enclave/%.o: ../Enclave/%.cpp
+	@$(CXX) $(App_Cpp_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+$(App_Name): isv_app/isv_enclave_u.o $(App_Cpp_Objects)
+	@$(CXX) $^ -o $@ $(App_Link_Flags)
+	@echo "LINK =>  $@"
+
+
+######## Enclave Objects ########
+
+isv_enclave/isv_enclave_t.c: $(SGX_EDGER8R) isv_enclave/isv_enclave.edl
+	@cd isv_enclave && $(SGX_EDGER8R) --trusted ../isv_enclave/isv_enclave.edl --search-path ../isv_enclave --search-path $(SGX_SDK)/include
+	@echo "GEN  =>  $@"
+
+isv_enclave/isv_enclave_t.o: isv_enclave/isv_enclave_t.c
+	@$(CC) $(Enclave_C_Flags) -c $< -o $@
+	@echo "CC   <=  $<"
+
+isv_enclave/%.o: isv_enclave/%.cpp
+	@$(CXX) $(Enclave_Cpp_Flags) -c $< -o $@
+	@echo "CXX  <=  $<"
+
+$(Enclave_Name): isv_enclave/isv_enclave_t.o $(Enclave_Cpp_Objects)
+	@$(CXX) $^ -o $@ $(Enclave_Link_Flags)
+	@echo "LINK =>  $@"
+
+$(Signed_Enclave_Name): $(Enclave_Name)
+	@$(SGX_ENCLAVE_SIGNER) sign -key isv_enclave/isv_enclave_private.pem -enclave $(Enclave_Name) -out $@ -config $(Enclave_Config_File)
+	@echo "SIGN =>  $@"
+
+.PHONY: clean
+
+clean:
+	@rm -f $(App_Name) $(Enclave_Name) $(Signed_Enclave_Name) $(App_Cpp_Objects) isv_app/isv_enclave_u.* $(Enclave_Cpp_Objects) isv_enclave/isv_enclave_t.* libservice_provider.* $(ServiceProvider_Cpp_Objects)

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/RemoteAttestation/Application/isv_app/isv_app.cpp

@@ -0,0 +1,40 @@
+#include <iostream>
+#include <unistd.h>
+
+#include "LogBase.h"
+
+using namespace util;
+
+#include "MessageHandler.h"
+
+int Main(int argc, char* argv[]) {
+    LogBase::Inst();
+
+    int ret = 0;
+
+    MessageHandler msg;
+    msg.init();
+    msg.start();
+
+    return ret;
+}
+
+
+int main( int argc, char **argv ) {
+    try {
+        return Main(argc, argv);
+    } catch (std::exception& e) {
+        Log("exception: %s", e.what());
+    } catch (...) {
+        Log("unexpected exception") ;
+    }
+
+    return -1;
+}
+
+
+
+
+
+
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/RemoteAttestation/Application/isv_enclave/isv_enclave.config.xml

@@ -0,0 +1,11 @@
+<EnclaveConfiguration>
+	<ProdID>0</ProdID>
+	<ISVSVN>0</ISVSVN>
+	<StackMaxSize>0x40000</StackMaxSize>
+	<HeapMaxSize>0x100000</HeapMaxSize>
+	<TCSNum>1</TCSNum>
+	<TCSPolicy>1</TCSPolicy>
+	<DisableDebug>0</DisableDebug>
+	<MiscSelect>0</MiscSelect>
+	<MiscMask>0xFFFFFFFF</MiscMask>
+</EnclaveConfiguration>

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/RemoteAttestation/Application/isv_enclave/isv_enclave.cpp

@@ -0,0 +1,311 @@
+#include <stdarg.h>
+#include <stdio.h>
+
+#include <assert.h>
+#include "isv_enclave_t.h"
+#include "sgx_tkey_exchange.h"
+#include "sgx_tcrypto.h"
+#include "string.h"
+
+// This is the public EC key of the SP. The corresponding private EC key is
+// used by the SP to sign data used in the remote attestation SIGMA protocol
+// to sign channel binding data in MSG2. A successful verification of the
+// signature confirms the identity of the SP to the ISV app in remote
+// attestation secure channel binding. The public EC key should be hardcoded in
+// the enclave or delivered in a trustworthy manner. The use of a spoofed public
+// EC key in the remote attestation with secure channel binding session may lead
+// to a security compromise. Every different SP the enlcave communicates to
+// must have a unique SP public key. Delivery of the SP public key is
+// determined by the ISV. The TKE SIGMA protocl expects an Elliptical Curve key
+// based on NIST P-256
+static const sgx_ec256_public_t g_sp_pub_key = {
+    {
+        0x72, 0x12, 0x8a, 0x7a, 0x17, 0x52, 0x6e, 0xbf,
+        0x85, 0xd0, 0x3a, 0x62, 0x37, 0x30, 0xae, 0xad,
+        0x3e, 0x3d, 0xaa, 0xee, 0x9c, 0x60, 0x73, 0x1d,
+        0xb0, 0x5b, 0xe8, 0x62, 0x1c, 0x4b, 0xeb, 0x38
+    },
+    {
+        0xd4, 0x81, 0x40, 0xd9, 0x50, 0xe2, 0x57, 0x7b,
+        0x26, 0xee, 0xb7, 0x41, 0xe7, 0xc6, 0x14, 0xe2,
+        0x24, 0xb7, 0xbd, 0xc9, 0x03, 0xf2, 0x9a, 0x28,
+        0xa8, 0x3c, 0xc8, 0x10, 0x11, 0x14, 0x5e, 0x06
+    }
+
+};
+
+
+#ifdef SUPPLIED_KEY_DERIVATION
+
+#pragma message ("Supplied key derivation function is used.")
+
+typedef struct _hash_buffer_t {
+    uint8_t counter[4];
+    sgx_ec256_dh_shared_t shared_secret;
+    uint8_t algorithm_id[4];
+} hash_buffer_t;
+
+const char ID_U[] = "SGXRAENCLAVE";
+const char ID_V[] = "SGXRASERVER";
+
+// Derive two keys from shared key and key id.
+bool derive_key(
+    const sgx_ec256_dh_shared_t *p_shared_key,
+    uint8_t key_id,
+    sgx_ec_key_128bit_t *first_derived_key,
+    sgx_ec_key_128bit_t *second_derived_key) {
+    sgx_status_t sgx_ret = SGX_SUCCESS;
+    hash_buffer_t hash_buffer;
+    sgx_sha_state_handle_t sha_context;
+    sgx_sha256_hash_t key_material;
+
+    memset(&hash_buffer, 0, sizeof(hash_buffer_t));
+    /* counter in big endian  */
+    hash_buffer.counter[3] = key_id;
+
+    /*convert from little endian to big endian */
+    for (size_t i = 0; i < sizeof(sgx_ec256_dh_shared_t); i++) {
+        hash_buffer.shared_secret.s[i] = p_shared_key->s[sizeof(p_shared_key->s)-1 - i];
+    }
+
+    sgx_ret = sgx_sha256_init(&sha_context);
+    if (sgx_ret != SGX_SUCCESS) {
+        return false;
+    }
+    sgx_ret = sgx_sha256_update((uint8_t*)&hash_buffer, sizeof(hash_buffer_t), sha_context);
+    if (sgx_ret != SGX_SUCCESS) {
+        sgx_sha256_close(sha_context);
+        return false;
+    }
+    sgx_ret = sgx_sha256_update((uint8_t*)&ID_U, sizeof(ID_U), sha_context);
+    if (sgx_ret != SGX_SUCCESS) {
+        sgx_sha256_close(sha_context);
+        return false;
+    }
+    sgx_ret = sgx_sha256_update((uint8_t*)&ID_V, sizeof(ID_V), sha_context);
+    if (sgx_ret != SGX_SUCCESS) {
+        sgx_sha256_close(sha_context);
+        return false;
+    }
+    sgx_ret = sgx_sha256_get_hash(sha_context, &key_material);
+    if (sgx_ret != SGX_SUCCESS) {
+        sgx_sha256_close(sha_context);
+        return false;
+    }
+    sgx_ret = sgx_sha256_close(sha_context);
+
+    assert(sizeof(sgx_ec_key_128bit_t)* 2 == sizeof(sgx_sha256_hash_t));
+    memcpy(first_derived_key, &key_material, sizeof(sgx_ec_key_128bit_t));
+    memcpy(second_derived_key, (uint8_t*)&key_material + sizeof(sgx_ec_key_128bit_t), sizeof(sgx_ec_key_128bit_t));
+
+    // memset here can be optimized away by compiler, so please use memset_s on
+    // windows for production code and similar functions on other OSes.
+    memset(&key_material, 0, sizeof(sgx_sha256_hash_t));
+
+    return true;
+}
+
+//isv defined key derivation function id
+#define ISV_KDF_ID 2
+
+typedef enum _derive_key_type_t {
+    DERIVE_KEY_SMK_SK = 0,
+    DERIVE_KEY_MK_VK,
+} derive_key_type_t;
+
+sgx_status_t key_derivation(const sgx_ec256_dh_shared_t* shared_key,
+                            uint16_t kdf_id,
+                            sgx_ec_key_128bit_t* smk_key,
+                            sgx_ec_key_128bit_t* sk_key,
+                            sgx_ec_key_128bit_t* mk_key,
+                            sgx_ec_key_128bit_t* vk_key) {
+    bool derive_ret = false;
+
+    if (NULL == shared_key) {
+        return SGX_ERROR_INVALID_PARAMETER;
+    }
+
+    if (ISV_KDF_ID != kdf_id) {
+        //fprintf(stderr, "\nError, key derivation id mismatch in [%s].", __FUNCTION__);
+        return SGX_ERROR_KDF_MISMATCH;
+    }
+
+    derive_ret = derive_key(shared_key, DERIVE_KEY_SMK_SK,
+                            smk_key, sk_key);
+    if (derive_ret != true) {
+        //fprintf(stderr, "\nError, derive key fail in [%s].", __FUNCTION__);
+        return SGX_ERROR_UNEXPECTED;
+    }
+
+    derive_ret = derive_key(shared_key, DERIVE_KEY_MK_VK,
+                            mk_key, vk_key);
+    if (derive_ret != true) {
+        //fprintf(stderr, "\nError, derive key fail in [%s].", __FUNCTION__);
+        return SGX_ERROR_UNEXPECTED;
+    }
+    return SGX_SUCCESS;
+}
+#else
+#pragma message ("Default key derivation function is used.")
+#endif
+
+// This ecall is a wrapper of sgx_ra_init to create the trusted
+// KE exchange key context needed for the remote attestation
+// SIGMA API's. Input pointers aren't checked since the trusted stubs
+// copy them into EPC memory.
+//
+// @param b_pse Indicates whether the ISV app is using the
+//              platform services.
+// @param p_context Pointer to the location where the returned
+//                  key context is to be copied.
+//
+// @return Any error return from the create PSE session if b_pse
+//         is true.
+// @return Any error returned from the trusted key exchange API
+//         for creating a key context.
+
+sgx_status_t enclave_init_ra(
+    int b_pse,
+    sgx_ra_context_t *p_context) {
+    // isv enclave call to trusted key exchange library.
+    sgx_status_t ret;
+    if(b_pse) {
+        int busy_retry_times = 2;
+        do {
+            ret = sgx_create_pse_session();
+        } while (ret == SGX_ERROR_BUSY && busy_retry_times--);
+        if (ret != SGX_SUCCESS)
+            return ret;
+    }
+#ifdef SUPPLIED_KEY_DERIVATION
+    ret = sgx_ra_init_ex(&g_sp_pub_key, b_pse, key_derivation, p_context);
+#else
+    ret = sgx_ra_init(&g_sp_pub_key, b_pse, p_context);
+#endif
+    if(b_pse) {
+        sgx_close_pse_session();
+        return ret;
+    }
+    return ret;
+}
+
+
+// Closes the tKE key context used during the SIGMA key
+// exchange.
+//
+// @param context The trusted KE library key context.
+//
+// @return Return value from the key context close API
+
+sgx_status_t SGXAPI enclave_ra_close(
+    sgx_ra_context_t context) {
+    sgx_status_t ret;
+    ret = sgx_ra_close(context);
+    return ret;
+}
+
+
+// Verify the mac sent in att_result_msg from the SP using the
+// MK key. Input pointers aren't checked since the trusted stubs
+// copy them into EPC memory.
+//
+//
+// @param context The trusted KE library key context.
+// @param p_message Pointer to the message used to produce MAC
+// @param message_size Size in bytes of the message.
+// @param p_mac Pointer to the MAC to compare to.
+// @param mac_size Size in bytes of the MAC
+//
+// @return SGX_ERROR_INVALID_PARAMETER - MAC size is incorrect.
+// @return Any error produced by tKE  API to get SK key.
+// @return Any error produced by the AESCMAC function.
+// @return SGX_ERROR_MAC_MISMATCH - MAC compare fails.
+
+sgx_status_t verify_att_result_mac(sgx_ra_context_t context,
+                                   uint8_t* p_message,
+                                   size_t message_size,
+                                   uint8_t* p_mac,
+                                   size_t mac_size) {
+    sgx_status_t ret;
+    sgx_ec_key_128bit_t mk_key;
+
+    if(mac_size != sizeof(sgx_mac_t)) {
+        ret = SGX_ERROR_INVALID_PARAMETER;
+        return ret;
+    }
+    if(message_size > UINT32_MAX) {
+        ret = SGX_ERROR_INVALID_PARAMETER;
+        return ret;
+    }
+
+    do {
+        uint8_t mac[SGX_CMAC_MAC_SIZE] = {0};
+
+        ret = sgx_ra_get_keys(context, SGX_RA_KEY_MK, &mk_key);
+        if(SGX_SUCCESS != ret) {
+            break;
+        }
+        ret = sgx_rijndael128_cmac_msg(&mk_key,
+                                       p_message,
+                                       (uint32_t)message_size,
+                                       &mac);
+        if(SGX_SUCCESS != ret) {
+            break;
+        }
+        if(0 == consttime_memequal(p_mac, mac, sizeof(mac))) {
+            ret = SGX_ERROR_MAC_MISMATCH;
+            break;
+        }
+
+    } while(0);
+
+    return ret;
+}
+
+
+sgx_status_t verify_secret_data (
+    sgx_ra_context_t context,
+    uint8_t *p_secret,
+    uint32_t secret_size,
+    uint8_t *p_gcm_mac,
+    uint32_t max_verification_length,
+    uint8_t *p_ret) {
+    sgx_status_t ret = SGX_SUCCESS;
+    sgx_ec_key_128bit_t sk_key;
+
+    do {
+        ret = sgx_ra_get_keys(context, SGX_RA_KEY_SK, &sk_key);
+        if (SGX_SUCCESS != ret) {
+            break;
+        }
+
+        uint8_t *decrypted = (uint8_t*) malloc(sizeof(uint8_t) * secret_size);
+        uint8_t aes_gcm_iv[12] = {0};
+
+        ret = sgx_rijndael128GCM_decrypt(&sk_key,
+                                         p_secret,
+                                         secret_size,
+                                         decrypted,
+                                         &aes_gcm_iv[0],
+                                         12,
+                                         NULL,
+                                         0,
+                                         (const sgx_aes_gcm_128bit_tag_t *) (p_gcm_mac));
+
+        if (SGX_SUCCESS == ret) {
+            if (decrypted[0] == 0) {
+                if (decrypted[1] != 1) {
+                    ret = SGX_ERROR_INVALID_SIGNATURE;
+                }
+            } else {
+                ret = SGX_ERROR_UNEXPECTED;
+            }
+        }
+
+    } while(0);
+
+    return ret;
+}
+
+
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/RemoteAttestation/Application/isv_enclave/isv_enclave.edl

@@ -0,0 +1,38 @@
+enclave {
+    from "sgx_tkey_exchange.edl" import *;
+
+    include "sgx_key_exchange.h"
+    include "sgx_trts.h"
+
+    trusted {
+        public sgx_status_t enclave_init_ra(int b_pse, [out] sgx_ra_context_t *p_context);
+
+        public sgx_status_t enclave_ra_close(sgx_ra_context_t context);
+
+        public sgx_status_t verify_att_result_mac(sgx_ra_context_t context,
+													[in,size=message_size] uint8_t* message,
+													size_t message_size,
+													[in,size=mac_size] uint8_t* mac,
+													size_t mac_size);
+
+        public sgx_status_t verify_secret_data(sgx_ra_context_t context,
+												[in,size=secret_size] uint8_t* p_secret,
+												uint32_t secret_size,
+												[in,count=16] uint8_t* gcm_mac,
+												uint32_t max_verification_length,
+												[out, count=16] uint8_t *p_ret);
+    };
+
+};
+
+
+
+
+
+
+
+
+
+
+
+

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/RemoteAttestation/Application/isv_enclave/isv_enclave.lds

@@ -0,0 +1,8 @@
+enclave.so {
+global:
+    g_global_data_sim;
+    g_global_data;
+    enclave_entry;
+local:
+    *;
+};

Assignment 7 - SGX Hands-on/SGX101_sample_code-master/RemoteAttestation/Application/isv_enclave/isv_enclave_private.pem

@@ -0,0 +1,39 @@
+-----BEGIN RSA PRIVATE KEY-----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+9k5gRU+xDqkHanyD1gkGGwhFTUNX94EJEOdQEWw3hxLnVtePoke/
+-----END RSA PRIVATE KEY-----