/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 *

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 *

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. 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.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 *

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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.

 *

 * The licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.] */

#include <openssl/digest.h>

#include <assert.h>

#include <string.h>

#include <openssl/md4.h>

#include <openssl/md5.h>

#include <openssl/nid.h>

#include <openssl/sha.h>

#include "internal.h"

#include "../delocate.h"

#include "../../internal.h"

#if defined(NDEBUG)

#define CHECK(x) (void) (x)

#else

#define CHECK(x) assert(x)

#endif

static void md4_init(EVP_MD_CTX *ctx) {

  CHECK(MD4_Init(ctx->md_data));

}

static void md4_update(EVP_MD_CTX *ctx, const void *data, size_t count) {

  CHECK(MD4_Update(ctx->md_data, data, count));

}

static void md4_final(EVP_MD_CTX *ctx, uint8_t *out) {

  CHECK(MD4_Final(out, ctx->md_data));

}

DEFINE_METHOD_FUNCTION(EVP_MD, EVP_md4) {

  out->type = NID_md4;

  out->md_size = MD4_DIGEST_LENGTH;

  out->flags = 0;

  out->init = md4_init;

  out->update = md4_update;

  out->final = md4_final;

  out->block_size = 64;

  out->ctx_size = sizeof(MD4_CTX);

}

static void md5_init(EVP_MD_CTX *ctx) {

  CHECK(MD5_Init(ctx->md_data));

}

static void md5_update(EVP_MD_CTX *ctx, const void *data, size_t count) {

  CHECK(MD5_Update(ctx->md_data, data, count));

}

static void md5_final(EVP_MD_CTX *ctx, uint8_t *out) {

  CHECK(MD5_Final(out, ctx->md_data));

}

DEFINE_METHOD_FUNCTION(EVP_MD, EVP_md5) {

  out->type = NID_md5;

  out->md_size = MD5_DIGEST_LENGTH;

  out->flags = 0;

  out->init = md5_init;

  out->update = md5_update;

  out->final = md5_final;

  out->block_size = 64;

  out->ctx_size = sizeof(MD5_CTX);

}

static void sha1_init(EVP_MD_CTX *ctx) {

  CHECK(SHA1_Init(ctx->md_data));

}

static void sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count) {

  CHECK(SHA1_Update(ctx->md_data, data, count));

}

static void sha1_final(EVP_MD_CTX *ctx, uint8_t *md) {

  CHECK(SHA1_Final(md, ctx->md_data));

}

DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha1) {

  out->type = NID_sha1;

  out->md_size = SHA_DIGEST_LENGTH;

  out->flags = 0;

  out->init = sha1_init;

  out->update = sha1_update;

  out->final = sha1_final;

  out->block_size = 64;

  out->ctx_size = sizeof(SHA_CTX);

}

static void sha224_init(EVP_MD_CTX *ctx) {

  CHECK(SHA224_Init(ctx->md_data));

}

static void sha224_update(EVP_MD_CTX *ctx, const void *data, size_t count) {

  CHECK(SHA224_Update(ctx->md_data, data, count));

}

static void sha224_final(EVP_MD_CTX *ctx, uint8_t *md) {

  CHECK(SHA224_Final(md, ctx->md_data));

}

DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha224) {

  out->type = NID_sha224;

  out->md_size = SHA224_DIGEST_LENGTH;

  out->flags = 0;

  out->init = sha224_init;

  out->update = sha224_update;

  out->final = sha224_final;

  out->block_size = 64;

  out->ctx_size = sizeof(SHA256_CTX);

}

static void sha256_init(EVP_MD_CTX *ctx) {

  CHECK(SHA256_Init(ctx->md_data));

}

static void sha256_update(EVP_MD_CTX *ctx, const void *data, size_t count) {

  CHECK(SHA256_Update(ctx->md_data, data, count));

}

static void sha256_final(EVP_MD_CTX *ctx, uint8_t *md) {

  CHECK(SHA256_Final(md, ctx->md_data));

}

DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha256) {

  out->type = NID_sha256;

  out->md_size = SHA256_DIGEST_LENGTH;

  out->flags = 0;

  out->init = sha256_init;

  out->update = sha256_update;

  out->final = sha256_final;

  out->block_size = 64;

  out->ctx_size = sizeof(SHA256_CTX);

}

static void sha384_init(EVP_MD_CTX *ctx) {

  CHECK(SHA384_Init(ctx->md_data));

}

static void sha384_update(EVP_MD_CTX *ctx, const void *data, size_t count) {

  CHECK(SHA384_Update(ctx->md_data, data, count));

}

static void sha384_final(EVP_MD_CTX *ctx, uint8_t *md) {

  CHECK(SHA384_Final(md, ctx->md_data));

}

DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha384) {

  out->type = NID_sha384;

  out->md_size = SHA384_DIGEST_LENGTH;

  out->flags = 0;

  out->init = sha384_init;

  out->update = sha384_update;

  out->final = sha384_final;

  out->block_size = 128;

  out->ctx_size = sizeof(SHA512_CTX);

}

static void sha512_init(EVP_MD_CTX *ctx) {

  CHECK(SHA512_Init(ctx->md_data));

}

static void sha512_update(EVP_MD_CTX *ctx, const void *data, size_t count) {

  CHECK(SHA512_Update(ctx->md_data, data, count));

}

static void sha512_final(EVP_MD_CTX *ctx, uint8_t *md) {

  CHECK(SHA512_Final(md, ctx->md_data));

}

DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha512) {

  out->type = NID_sha512;

  out->md_size = SHA512_DIGEST_LENGTH;

  out->flags = 0;

  out->init = sha512_init;

  out->update = sha512_update;

  out->final = sha512_final;

  out->block_size = 128;

  out->ctx_size = sizeof(SHA512_CTX);

}

static void sha512_256_init(EVP_MD_CTX *ctx) {

  CHECK(SHA512_256_Init(ctx->md_data));

}

static void sha512_256_update(EVP_MD_CTX *ctx, const void *data, size_t count) {

  CHECK(SHA512_256_Update(ctx->md_data, data, count));

}

static void sha512_256_final(EVP_MD_CTX *ctx, uint8_t *md) {

  CHECK(SHA512_256_Final(md, ctx->md_data));

}

DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha512_256) {

  out->type = NID_sha512_256;

  out->md_size = SHA512_256_DIGEST_LENGTH;

  out->flags = 0;

  out->init = sha512_256_init;

  out->update = sha512_256_update;

  out->final = sha512_256_final;

  out->block_size = 128;

  out->ctx_size = sizeof(SHA512_CTX);

}

typedef struct {

  MD5_CTX md5;

  SHA_CTX sha1;

} MD5_SHA1_CTX;

static void md5_sha1_init(EVP_MD_CTX *md_ctx) {

  MD5_SHA1_CTX *ctx = md_ctx->md_data;

  CHECK(MD5_Init(&ctx->md5) && SHA1_Init(&ctx->sha1));

}

static void md5_sha1_update(EVP_MD_CTX *md_ctx, const void *data,

                            size_t count) {

  MD5_SHA1_CTX *ctx = md_ctx->md_data;

  CHECK(MD5_Update(&ctx->md5, data, count) &&

        SHA1_Update(&ctx->sha1, data, count));

}

static void md5_sha1_final(EVP_MD_CTX *md_ctx, uint8_t *out) {

  MD5_SHA1_CTX *ctx = md_ctx->md_data;

  CHECK(MD5_Final(out, &ctx->md5) &&

        SHA1_Final(out + MD5_DIGEST_LENGTH, &ctx->sha1));

}

DEFINE_METHOD_FUNCTION(EVP_MD, EVP_md5_sha1) {

  out->type = NID_md5_sha1;

  out->md_size = MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH;

  out->flags = 0;

  out->init = md5_sha1_init;

  out->update = md5_sha1_update;

  out->final = md5_sha1_final;

  out->block_size = 64;

  out->ctx_size = sizeof(MD5_SHA1_CTX);

}

#undef CHECK