mirror of
https://github.com/intel/linux-sgx
synced 2026-06-08 14:49:32 +00:00
Li, Xun
80 lines
2.8 KiB
C++
80 lines
2.8 KiB
C++
/*
|
|
* 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;
|
|
}
|