[Assignmnt-7] rename directory

Assignment 7 - SGX Hands-on/src/enclave/enclave.h

@@ -0,0 +1,113 @@
+/*
+ * 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 <stdint.h>
+#include <sgx_error.h>
+
+/*
+ * returns the size of the sealed key pair
+ */
+int get_sealed_size();
+
+/*
+ * returns the length of the hash used in the signature
+ */
+int get_digest_size();
+
+/*
+ * returns the size of the signature created by the enclave
+ */
+int get_signature_size();
+
+/*
+ * returns the size of the public key
+ */
+int get_public_key_size();
+
+/*
+ * returns the size of the private key
+ */
+int get_private_key_size();
+
+/*
+ * @brief generates a secp256r1 key pair and returns it sealed by the TEE
+ *
+ * @param sealed buffer to hold the sealed key pair
+ * @param sealed_size size of the sealed key pair
+ *
+ * @returns SGX_SUCCESS on success, else sgx error code
+ */
+sgx_status_t generate_key_pair(uint8_t *sealed, uint32_t sealed_size);
+
+/*
+ * @brief returns the public key of the sealed key pair provided to the enclave
+ *
+ * @param sealed buffer containing the sealed key pair
+ * @param sealed_size size of the sealed key pair
+ * @param public_key buffer to hold the public key
+ *
+ * @returns SGX_SUCCESS on success, SGX_ERROR_INVALID_PARAMETER for invalid parameters, else sgx error code
+ */
+sgx_status_t get_public_key(const uint8_t *sealed, const uint32_t sealed_size, uint8_t *public_key);
+
+/*
+ * @brief signs the firmware provided by an authorized employee
+ *
+ * @param firmware buffer containing the firmware
+ * @param firmware_size size of the sealed key pair
+ * @param sealed buffer containing the sealed key pair
+ * @param sealed_size size of the sealed key pair
+ * @param public_key buffer with the employees public key; holds enclaves public key after successful signing
+ * @param signature buffer with the employees signature; holds the enclaves signature after successful signing
+ *
+ * @returns SGX_SUCCESS on success, SGX_ERROR_INVALID_PARAMETER for invalid parameters, else sgx error code
+ */
+sgx_status_t sign_firmware(const uint8_t *firmware, uint32_t firmware_size, const uint8_t *sealed, uint32_t sealed_size, uint8_t *public_key, uint8_t *signature);
+
+/*
+ * @brief verifies a firmware signature provided by an authorized employee or enclave
+ *
+ * @param firmware buffer containing the firmware
+ * @param firmware_size size of the sealed key pair or NULL
+ * @param sealed buffer containing the sealed key pair
+ * @param sealed_size size of the sealed key pair
+ * @param public_key buffer with the employees public key or NULL
+ * @param signature buffer with the employees signature
+ *
+ * @returns SGX_EC_VALID on success, SGX_EC_INVALID for invalid signatures, SGX_ERROR_INVALID_PARAMETER for invalid parameters, else sgx error code
+ */
+sgx_status_t verify_firmware(const uint8_t *firmware, uint32_t firmware_size, const uint8_t *sealed, uint32_t sealed_size, const uint8_t *public_key, const uint8_t *signature);
+
+#endif /* !_ENCLAVE_H_ */