mirror of
https://github.com/intel/linux-sgx
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lzha101
72 lines
2.6 KiB
C++
72 lines
2.6 KiB
C++
/*
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* Copyright (C) 2011-2021 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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#include "crypto_wrapper.h"
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#include <openssl/cmac.h>
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#include <openssl/evp.h>
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#include <stdint.h>
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#include <assert.h>
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#include <se_memcpy.h>
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sgx_status_t sgx_cmac128_msg(const sgx_key_128bit_t key, const uint8_t *p_src, unsigned int src_len, sgx_mac_t *p_mac)
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{
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if(!key || !p_src || src_len == 0 || !p_mac)
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{
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return SGX_ERROR_INVALID_PARAMETER;
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}
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CMAC_CTX *cmac_ctx = NULL;
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size_t mac_len;
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if(!(cmac_ctx = CMAC_CTX_new()))
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{
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return SGX_ERROR_OUT_OF_MEMORY;
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}
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if(!CMAC_Init(cmac_ctx, key, sizeof(sgx_key_128bit_t), EVP_aes_128_cbc(), NULL))
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{
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CMAC_CTX_free(cmac_ctx);
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return SGX_ERROR_UNEXPECTED;
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}
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if(!CMAC_Update(cmac_ctx, p_src, src_len))
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{
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CMAC_CTX_free(cmac_ctx);
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return SGX_ERROR_UNEXPECTED;
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}
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if(!CMAC_Final(cmac_ctx, (uint8_t *)p_mac, &mac_len))
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{
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CMAC_CTX_free(cmac_ctx);
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return SGX_ERROR_UNEXPECTED;
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}
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CMAC_CTX_free(cmac_ctx);
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assert(mac_len == sizeof(sgx_mac_t));
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return SGX_SUCCESS;
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}
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