md5.h

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/*
     This file is part of GNU libmicrohttpd
     Copyright (C) 2022 Evgeny Grin (Karlson2k)

     GNU libmicrohttpd is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.

     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Lesser General Public License for more details.

     You should have received a copy of the GNU Lesser General Public
     License along with this library.
     If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef MHD_MD5_H
#define MHD_MD5_H 1

#include "mhd_options.h"
#include <stdint.h>
#ifdef HAVE_STDDEF_H
#include <stddef.h>  /* for size_t */
#endif /* HAVE_STDDEF_H */

#define MD5_WORD_SIZE_BITS 32

#define MD5_BYTES_IN_WORD (MD5_WORD_SIZE_BITS / 8)

#define MD5_HASH_SIZE_WORDS 4

#define MD5_DIGEST_SIZE_WORDS MD5_HASH_SIZE_WORDS

#define MD5_DIGEST_SIZE (MD5_DIGEST_SIZE_WORDS * MD5_BYTES_IN_WORD)

#define MD5_DIGEST_STRING_SIZE ((MD5_DIGEST_SIZE) * 2 + 1)

#define MD5_BLOCK_SIZE_BITS 512

#define MD5_BLOCK_SIZE (MD5_BLOCK_SIZE_BITS / 8)

#define MD5_BLOCK_SIZE_WORDS (MD5_BLOCK_SIZE_BITS / MD5_WORD_SIZE_BITS)


struct Md5Ctx
{
  uint32_t H[MD5_HASH_SIZE_WORDS];         
  uint32_t buffer[MD5_BLOCK_SIZE_WORDS];   
  uint64_t count;                          
};

void
MHD_MD5_init (struct Md5Ctx *ctx);


void
MHD_MD5_update (struct Md5Ctx *ctx,
                const uint8_t *data,
                size_t length);


void
MHD_MD5_finish (struct Md5Ctx *ctx,
                uint8_t digest[MD5_DIGEST_SIZE]);

#define MHD_MD5_HAS_FINISH 1

#endif /* MHD_MD5_H */