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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 <openssl/evp.h>
- #include <stdint.h>
- #include <se_memcpy.h>
- #include "crypto_wrapper.h"
- sgx_status_t sgx_EVP_Digest(const EVP_MD *type, const uint8_t *p_src, unsigned int src_len, uint8_t *digest, unsigned int *digest_len)
- {
- if(!type || !p_src || src_len == 0 || !digest || digest_len == 0)
- return SGX_ERROR_INVALID_PARAMETER;
- uint8_t tmp_digest[EVP_MAX_MD_SIZE];
- memset(tmp_digest, 0, EVP_MAX_MD_SIZE);
- unsigned int tmp_digest_len;
- unsigned int digest_buf_len = *digest_len;
- EVP_MD_CTX *ctx;
- if(NULL == (ctx = EVP_MD_CTX_create()))
- return SGX_ERROR_OUT_OF_MEMORY;
- if(!EVP_DigestInit_ex(ctx, type, NULL))
- {
- EVP_MD_CTX_destroy(ctx);
- return SGX_ERROR_UNEXPECTED;
- }
- if(!EVP_DigestUpdate(ctx, p_src, src_len))
- {
- EVP_MD_CTX_destroy(ctx);
- return SGX_ERROR_UNEXPECTED;
- }
- if(!EVP_DigestFinal_ex(ctx, tmp_digest, &tmp_digest_len))
- {
- EVP_MD_CTX_destroy(ctx);
- return SGX_ERROR_UNEXPECTED;
- }
- EVP_MD_CTX_destroy(ctx);
- if(tmp_digest_len > digest_buf_len)
- {
- return SGX_ERROR_UNEXPECTED;
- }
- if(memcpy_s(digest, digest_buf_len, tmp_digest, tmp_digest_len))
- return SGX_ERROR_UNEXPECTED;
- *digest_len = tmp_digest_len;
- return SGX_SUCCESS;
- }
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