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41 results

md4.c

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  • md4.c 5.59 KiB
    /* md4.c
    
       The MD4 hash function, described in RFC 1320.
    
       Copyright (C) 2003 Niels Möller, Marcus Comstedt
    
       This file is part of GNU Nettle.
    
       GNU Nettle is free software: you can redistribute it and/or
       modify it under the terms of either:
    
         * the GNU Lesser General Public License as published by the Free
           Software Foundation; either version 3 of the License, or (at your
           option) any later version.
    
       or
    
         * the GNU General Public License as published by the Free
           Software Foundation; either version 2 of the License, or (at your
           option) any later version.
    
       or both in parallel, as here.
    
       GNU Nettle 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
       General Public License for more details.
    
       You should have received copies of the GNU General Public License and
       the GNU Lesser General Public License along with this program.  If
       not, see http://www.gnu.org/licenses/.
    */
    
    /* Based on the public domain md5 code, and modified by Marcus
       Comstedt */
    
    #if HAVE_CONFIG_H
    # include "config.h"
    #endif
    
    #include <assert.h>
    #include <string.h>
    
    #include "md4.h"
    
    #include "macros.h"
    #include "nettle-write.h"
    
    /* A block, treated as a sequence of 32-bit words. */
    #define MD4_DATA_LENGTH 16
    
    static void
    md4_transform(uint32_t *digest, const uint32_t *data);
    
    static void
    md4_compress(struct md4_ctx *ctx, const uint8_t *block);
    
    /* FIXME: Could be an alias for md5_init */
    void
    md4_init(struct md4_ctx *ctx)
    {
      /* Same constants as for md5. */
      const uint32_t iv[_MD4_DIGEST_LENGTH] =
        {
          0x67452301,
          0xefcdab89,
          0x98badcfe,
          0x10325476,
        };
      memcpy(ctx->state, iv, sizeof(ctx->state));