[Assignment-7] add first enclave part

Assignment 7 - SGX Hands-on/src/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 sgx_status_t public_key([out]uint8_t *gx, [out]uint8_t *gy);
+        public sgx_status_t sign_firmware([in, size=data_size]uint8_t *data, size_t data_size, [out, size=signature_size]uint8_t *signature, size_t signature_size);
+    };
+
+    /* 
+     * 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 {
+        
+    };
+};