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/* $OpenBSD: m_md5_sha1.c,v 1.1 2017/02/28 14:15:37 jsing Exp $ */
/*
* Copyright (c) 2017 Joel Sing <jsing@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <openssl/evp.h>
#include <openssl/md5.h>
#include <openssl/objects.h>
#include <openssl/sha.h>
struct md5_sha1_ctx {
MD5_CTX md5;
SHA_CTX sha1;
};
static int
md5_sha1_init(EVP_MD_CTX *ctx)
{
struct md5_sha1_ctx *mdctx = ctx->md_data;
if (!MD5_Init(&mdctx->md5))
return 0;
if (!SHA1_Init(&mdctx->sha1))
return 0;
return 1;
}
static int
md5_sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count)
{
struct md5_sha1_ctx *mdctx = ctx->md_data;
if (!MD5_Update(&mdctx->md5, data, count))
return 0;
if (!SHA1_Update(&mdctx->sha1, data, count))
return 0;
return 1;
}
static int
md5_sha1_final(EVP_MD_CTX *ctx, unsigned char *out)
{
struct md5_sha1_ctx *mdctx = ctx->md_data;
if (!MD5_Final(out, &mdctx->md5))
return 0;
if (!SHA1_Final(out + MD5_DIGEST_LENGTH, &mdctx->sha1))
return 0;
return 1;
}
static const EVP_MD md5_sha1_md = {
.type = NID_md5_sha1,
.pkey_type = NID_md5_sha1,
.md_size = MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH,
.flags = 0,
.init = md5_sha1_init,
.update = md5_sha1_update,
.final = md5_sha1_final,
.block_size = MD5_CBLOCK, /* MD5_CBLOCK == SHA_CBLOCK */
.ctx_size = sizeof(EVP_MD *) + sizeof(struct md5_sha1_ctx),
};
const EVP_MD *
EVP_md5_sha1(void)
{
return &md5_sha1_md;
}
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