113 lines
No EOL
4.3 KiB
C
113 lines
No EOL
4.3 KiB
C
/*
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* Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _ENCLAVE_H_
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#define _ENCLAVE_H_
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#include <stdint.h>
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#include <sgx_error.h>
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/*
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* returns the size of the sealed key pair
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*/
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int get_sealed_size();
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/*
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* returns the length of the hash used in the signature
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*/
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int get_digest_size();
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/*
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* returns the size of the signature created by the enclave
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*/
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int get_signature_size();
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/*
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* returns the size of the public key
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*/
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int get_public_key_size();
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/*
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* returns the size of the private key
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*/
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int get_private_key_size();
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/*
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* @brief generates a secp256r1 key pair and returns it sealed by the TEE
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*
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* @param sealed buffer to hold the sealed key pair
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* @param sealed_size size of the sealed key pair
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*
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* @returns SGX_SUCCESS on success, else sgx error code
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*/
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sgx_status_t generate_key_pair(uint8_t *sealed, uint32_t sealed_size);
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/*
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* @brief returns the public key of the sealed key pair provided to the enclave
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*
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* @param sealed buffer containing the sealed key pair
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* @param sealed_size size of the sealed key pair
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* @param public_key buffer to hold the public key
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*
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* @returns SGX_SUCCESS on success, SGX_ERROR_INVALID_PARAMETER for invalid parameters, else sgx error code
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*/
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sgx_status_t get_public_key(const uint8_t *sealed, const uint32_t sealed_size, uint8_t *public_key);
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/*
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* @brief signs the firmware provided by an authorized employee
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*
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* @param firmware buffer containing the firmware
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* @param firmware_size size of the sealed key pair
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* @param sealed buffer containing the sealed key pair
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* @param sealed_size size of the sealed key pair
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* @param public_key buffer with the employees public key; holds enclaves public key after successful signing
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* @param signature buffer with the employees signature; holds the enclaves signature after successful signing
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*
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* @returns SGX_SUCCESS on success, SGX_ERROR_INVALID_PARAMETER for invalid parameters, else sgx error code
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*/
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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);
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/*
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* @brief verifies a firmware signature provided by an authorized employee or enclave
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*
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* @param firmware buffer containing the firmware
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* @param firmware_size size of the sealed key pair or NULL
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* @param sealed buffer containing the sealed key pair
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* @param sealed_size size of the sealed key pair
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* @param public_key buffer with the employees public key or NULL
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* @param signature buffer with the employees signature
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*
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* @returns SGX_EC_VALID on success, SGX_EC_INVALID for invalid signatures, SGX_ERROR_INVALID_PARAMETER for invalid parameters, else sgx error code
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*/
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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);
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#endif /* !_ENCLAVE_H_ */ |