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- /*
- * 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 "crypto_wrapper.h"
- #include <openssl/cmac.h>
- #include <openssl/evp.h>
- #include <stdint.h>
- #include <assert.h>
- #include <se_memcpy.h>
- 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)
- {
- if(!key || !p_src || src_len == 0 || !p_mac)
- {
- return SGX_ERROR_INVALID_PARAMETER;
- }
- CMAC_CTX *cmac_ctx = NULL;
- size_t mac_len;
-
- if(!(cmac_ctx = CMAC_CTX_new()))
- {
- return SGX_ERROR_OUT_OF_MEMORY;
- }
- if(!CMAC_Init(cmac_ctx, key, sizeof(sgx_key_128bit_t), EVP_aes_128_cbc(), NULL))
- {
- CMAC_CTX_free(cmac_ctx);
- return SGX_ERROR_UNEXPECTED;
- }
- if(!CMAC_Update(cmac_ctx, p_src, src_len))
- {
- CMAC_CTX_free(cmac_ctx);
- return SGX_ERROR_UNEXPECTED;
- }
- if(!CMAC_Final(cmac_ctx, (uint8_t *)p_mac, &mac_len))
- {
- CMAC_CTX_free(cmac_ctx);
- return SGX_ERROR_UNEXPECTED;
- }
- CMAC_CTX_free(cmac_ctx);
- assert(mac_len == sizeof(sgx_mac_t));
- return SGX_SUCCESS;
- }
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