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/* BEGIN_ICS_COPYRIGHT5 ****************************************
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Copyright (c) 2015-2020, Intel Corporation
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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 are met:
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* Redistributions of source code must retain the above copyright notice,
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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 the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (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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* ** END_ICS_COPYRIGHT5 ****************************************/
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#include "fm_digest.h"
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#include <assert.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "ib_types.h"
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fm_digest_t * fm_digest_start(void)
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{
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fm_digest_t * ctx = EVP_MD_CTX_create();
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if (!ctx) return NULL;
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if (!EVP_DigestInit_ex(ctx, EVP_sha256(), NULL)) {
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EVP_MD_CTX_destroy(ctx);
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return NULL;
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}
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return ctx;
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}
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int fm_digest_update(fm_digest_t *ctx, const void *data, size_t len)
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{
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return EVP_DigestUpdate(ctx, data, len);
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}
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int fm_digest_finish(fm_digest_t *ctx, uint8_t *digest)
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{
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unsigned int len;
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if (EVP_DigestFinal_ex(ctx, digest, &len) != 1)
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return 0;
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EVP_MD_CTX_destroy(ctx);
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return 1;
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}
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int fm_digest_len(fm_digest_t *ctx)
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{
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return EVP_MD_CTX_size(ctx);
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}
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