git.zerfleddert.de Git - proxmark3-svn/blob - common/mbedtls/md5.c

   1 /*
   2  *  RFC 1321 compliant MD5 implementation
   3  *
   4  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
   5  *  SPDX-License-Identifier: GPL-2.0
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License along
  18  *  with this program; if not, write to the Free Software Foundation, Inc.,
  19  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  *  This file is part of mbed TLS (https://tls.mbed.org)
  22  */
  23 /*
  24  *  The MD5 algorithm was designed by Ron Rivest in 1991.
  25  *
  26  *  http://www.ietf.org/rfc/rfc1321.txt
  27  */
  28
  29 #if !defined(MBEDTLS_CONFIG_FILE)
  30 #include "mbedtls/config.h"
  31 #else
  32 #include MBEDTLS_CONFIG_FILE
  33 #endif
  34
  35 #if defined(MBEDTLS_MD5_C)
  36
  37 #include "mbedtls/md5.h"
  38 #include "mbedtls/platform_util.h"
  39
  40 #include <string.h>
  41
  42 #if defined(MBEDTLS_SELF_TEST)
  43 #if defined(MBEDTLS_PLATFORM_C)
  44 #include "mbedtls/platform.h"
  45 #else
  46 #include <stdio.h>
  47 #define mbedtls_printf printf
  48 #endif /* MBEDTLS_PLATFORM_C */
  49 #endif /* MBEDTLS_SELF_TEST */
  50
  51 #if !defined(MBEDTLS_MD5_ALT)
  52
  53 /*
  54  * 32-bit integer manipulation macros (little endian)
  55  */
  56 #ifndef GET_UINT32_LE
  57 #define GET_UINT32_LE(n,b,i)                            \
  58 {                                                       \
  59     (n) = ( (uint32_t) (b)[(i)    ]       )             \
  60         | ( (uint32_t) (b)[(i) + 1] <<  8 )             \
  61         | ( (uint32_t) (b)[(i) + 2] << 16 )             \
  62         | ( (uint32_t) (b)[(i) + 3] << 24 );            \
  63 }
  64 #endif
  65
  66 #ifndef PUT_UINT32_LE
  67 #define PUT_UINT32_LE(n,b,i)                                    \
  68 {                                                               \
  69     (b)[(i)    ] = (unsigned char) ( ( (n)       ) & 0xFF );    \
  70     (b)[(i) + 1] = (unsigned char) ( ( (n) >>  8 ) & 0xFF );    \
  71     (b)[(i) + 2] = (unsigned char) ( ( (n) >> 16 ) & 0xFF );    \
  72     (b)[(i) + 3] = (unsigned char) ( ( (n) >> 24 ) & 0xFF );    \
  73 }
  74 #endif
  75
  76 void mbedtls_md5_init( mbedtls_md5_context *ctx )
  77 {
  78     memset( ctx, 0, sizeof( mbedtls_md5_context ) );
  79 }
  80
  81 void mbedtls_md5_free( mbedtls_md5_context *ctx )
  82 {
  83     if( ctx == NULL )
  84         return;
  85
  86     mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md5_context ) );
  87 }
  88
  89 void mbedtls_md5_clone( mbedtls_md5_context *dst,
  90                         const mbedtls_md5_context *src )
  91 {
  92     *dst = *src;
  93 }
  94
  95 /*
  96  * MD5 context setup
  97  */
  98 int mbedtls_md5_starts_ret( mbedtls_md5_context *ctx )
  99 {
 100     ctx->total[0] = 0;
 101     ctx->total[1] = 0;
 102
 103     ctx->state[0] = 0x67452301;
 104     ctx->state[1] = 0xEFCDAB89;
 105     ctx->state[2] = 0x98BADCFE;
 106     ctx->state[3] = 0x10325476;
 107
 108     return( 0 );
 109 }
 110
 111 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
 112 void mbedtls_md5_starts( mbedtls_md5_context *ctx )
 113 {
 114     mbedtls_md5_starts_ret( ctx );
 115 }
 116 #endif
 117
 118 #if !defined(MBEDTLS_MD5_PROCESS_ALT)
 119 int mbedtls_internal_md5_process( mbedtls_md5_context *ctx,
 120                                   const unsigned char data[64] )
 121 {
 122     uint32_t X[16], A, B, C, D;
 123
 124     GET_UINT32_LE( X[ 0], data,  0 );
 125     GET_UINT32_LE( X[ 1], data,  4 );
 126     GET_UINT32_LE( X[ 2], data,  8 );
 127     GET_UINT32_LE( X[ 3], data, 12 );
 128     GET_UINT32_LE( X[ 4], data, 16 );
 129     GET_UINT32_LE( X[ 5], data, 20 );
 130     GET_UINT32_LE( X[ 6], data, 24 );
 131     GET_UINT32_LE( X[ 7], data, 28 );
 132     GET_UINT32_LE( X[ 8], data, 32 );
 133     GET_UINT32_LE( X[ 9], data, 36 );
 134     GET_UINT32_LE( X[10], data, 40 );
 135     GET_UINT32_LE( X[11], data, 44 );
 136     GET_UINT32_LE( X[12], data, 48 );
 137     GET_UINT32_LE( X[13], data, 52 );
 138     GET_UINT32_LE( X[14], data, 56 );
 139     GET_UINT32_LE( X[15], data, 60 );
 140
 141 #define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
 142
 143 #define P(a,b,c,d,k,s,t)                                \
 144 {                                                       \
 145     a += F(b,c,d) + X[k] + t; a = S(a,s) + b;           \
 146 }
 147
 148     A = ctx->state[0];
 149     B = ctx->state[1];
 150     C = ctx->state[2];
 151     D = ctx->state[3];
 152
 153 #define F(x,y,z) (z ^ (x & (y ^ z)))
 154
 155     P( A, B, C, D,  0,  7, 0xD76AA478 );
 156     P( D, A, B, C,  1, 12, 0xE8C7B756 );
 157     P( C, D, A, B,  2, 17, 0x242070DB );
 158     P( B, C, D, A,  3, 22, 0xC1BDCEEE );
 159     P( A, B, C, D,  4,  7, 0xF57C0FAF );
 160     P( D, A, B, C,  5, 12, 0x4787C62A );
 161     P( C, D, A, B,  6, 17, 0xA8304613 );
 162     P( B, C, D, A,  7, 22, 0xFD469501 );
 163     P( A, B, C, D,  8,  7, 0x698098D8 );
 164     P( D, A, B, C,  9, 12, 0x8B44F7AF );
 165     P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
 166     P( B, C, D, A, 11, 22, 0x895CD7BE );
 167     P( A, B, C, D, 12,  7, 0x6B901122 );
 168     P( D, A, B, C, 13, 12, 0xFD987193 );
 169     P( C, D, A, B, 14, 17, 0xA679438E );
 170     P( B, C, D, A, 15, 22, 0x49B40821 );
 171
 172 #undef F
 173
 174 #define F(x,y,z) (y ^ (z & (x ^ y)))
 175
 176     P( A, B, C, D,  1,  5, 0xF61E2562 );
 177     P( D, A, B, C,  6,  9, 0xC040B340 );
 178     P( C, D, A, B, 11, 14, 0x265E5A51 );
 179     P( B, C, D, A,  0, 20, 0xE9B6C7AA );
 180     P( A, B, C, D,  5,  5, 0xD62F105D );
 181     P( D, A, B, C, 10,  9, 0x02441453 );
 182     P( C, D, A, B, 15, 14, 0xD8A1E681 );
 183     P( B, C, D, A,  4, 20, 0xE7D3FBC8 );
 184     P( A, B, C, D,  9,  5, 0x21E1CDE6 );
 185     P( D, A, B, C, 14,  9, 0xC33707D6 );
 186     P( C, D, A, B,  3, 14, 0xF4D50D87 );
 187     P( B, C, D, A,  8, 20, 0x455A14ED );
 188     P( A, B, C, D, 13,  5, 0xA9E3E905 );
 189     P( D, A, B, C,  2,  9, 0xFCEFA3F8 );
 190     P( C, D, A, B,  7, 14, 0x676F02D9 );
 191     P( B, C, D, A, 12, 20, 0x8D2A4C8A );
 192
 193 #undef F
 194
 195 #define F(x,y,z) (x ^ y ^ z)
 196
 197     P( A, B, C, D,  5,  4, 0xFFFA3942 );
 198     P( D, A, B, C,  8, 11, 0x8771F681 );
 199     P( C, D, A, B, 11, 16, 0x6D9D6122 );
 200     P( B, C, D, A, 14, 23, 0xFDE5380C );
 201     P( A, B, C, D,  1,  4, 0xA4BEEA44 );
 202     P( D, A, B, C,  4, 11, 0x4BDECFA9 );
 203     P( C, D, A, B,  7, 16, 0xF6BB4B60 );
 204     P( B, C, D, A, 10, 23, 0xBEBFBC70 );
 205     P( A, B, C, D, 13,  4, 0x289B7EC6 );
 206     P( D, A, B, C,  0, 11, 0xEAA127FA );
 207     P( C, D, A, B,  3, 16, 0xD4EF3085 );
 208     P( B, C, D, A,  6, 23, 0x04881D05 );
 209     P( A, B, C, D,  9,  4, 0xD9D4D039 );
 210     P( D, A, B, C, 12, 11, 0xE6DB99E5 );
 211     P( C, D, A, B, 15, 16, 0x1FA27CF8 );
 212     P( B, C, D, A,  2, 23, 0xC4AC5665 );
 213
 214 #undef F
 215
 216 #define F(x,y,z) (y ^ (x | ~z))
 217
 218     P( A, B, C, D,  0,  6, 0xF4292244 );
 219     P( D, A, B, C,  7, 10, 0x432AFF97 );
 220     P( C, D, A, B, 14, 15, 0xAB9423A7 );
 221     P( B, C, D, A,  5, 21, 0xFC93A039 );
 222     P( A, B, C, D, 12,  6, 0x655B59C3 );
 223     P( D, A, B, C,  3, 10, 0x8F0CCC92 );
 224     P( C, D, A, B, 10, 15, 0xFFEFF47D );
 225     P( B, C, D, A,  1, 21, 0x85845DD1 );
 226     P( A, B, C, D,  8,  6, 0x6FA87E4F );
 227     P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
 228     P( C, D, A, B,  6, 15, 0xA3014314 );
 229     P( B, C, D, A, 13, 21, 0x4E0811A1 );
 230     P( A, B, C, D,  4,  6, 0xF7537E82 );
 231     P( D, A, B, C, 11, 10, 0xBD3AF235 );
 232     P( C, D, A, B,  2, 15, 0x2AD7D2BB );
 233     P( B, C, D, A,  9, 21, 0xEB86D391 );
 234
 235 #undef F
 236
 237     ctx->state[0] += A;
 238     ctx->state[1] += B;
 239     ctx->state[2] += C;
 240     ctx->state[3] += D;
 241
 242     return( 0 );
 243 }
 244
 245 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
 246 void mbedtls_md5_process( mbedtls_md5_context *ctx,
 247                           const unsigned char data[64] )
 248 {
 249     mbedtls_internal_md5_process( ctx, data );
 250 }
 251 #endif
 252 #endif /* !MBEDTLS_MD5_PROCESS_ALT */
 253
 254 /*
 255  * MD5 process buffer
 256  */
 257 int mbedtls_md5_update_ret( mbedtls_md5_context *ctx,
 258                             const unsigned char *input,
 259                             size_t ilen )
 260 {
 261     int ret;
 262     size_t fill;
 263     uint32_t left;
 264
 265     if( ilen == 0 )
 266         return( 0 );
 267
 268     left = ctx->total[0] & 0x3F;
 269     fill = 64 - left;
 270
 271     ctx->total[0] += (uint32_t) ilen;
 272     ctx->total[0] &= 0xFFFFFFFF;
 273
 274     if( ctx->total[0] < (uint32_t) ilen )
 275         ctx->total[1]++;
 276
 277     if( left && ilen >= fill )
 278     {
 279         memcpy( (void *) (ctx->buffer + left), input, fill );
 280         if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
 281             return( ret );
 282
 283         input += fill;
 284         ilen  -= fill;
 285         left = 0;
 286     }
 287
 288     while( ilen >= 64 )
 289     {
 290         if( ( ret = mbedtls_internal_md5_process( ctx, input ) ) != 0 )
 291             return( ret );
 292
 293         input += 64;
 294         ilen  -= 64;
 295     }
 296
 297     if( ilen > 0 )
 298     {
 299         memcpy( (void *) (ctx->buffer + left), input, ilen );
 300     }
 301
 302     return( 0 );
 303 }
 304
 305 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
 306 void mbedtls_md5_update( mbedtls_md5_context *ctx,
 307                          const unsigned char *input,
 308                          size_t ilen )
 309 {
 310     mbedtls_md5_update_ret( ctx, input, ilen );
 311 }
 312 #endif
 313
 314 /*
 315  * MD5 final digest
 316  */
 317 int mbedtls_md5_finish_ret( mbedtls_md5_context *ctx,
 318                             unsigned char output[16] )
 319 {
 320     int ret;
 321     uint32_t used;
 322     uint32_t high, low;
 323
 324     /*
 325      * Add padding: 0x80 then 0x00 until 8 bytes remain for the length
 326      */
 327     used = ctx->total[0] & 0x3F;
 328
 329     ctx->buffer[used++] = 0x80;
 330
 331     if( used <= 56 )
 332     {
 333         /* Enough room for padding + length in current block */
 334         memset( ctx->buffer + used, 0, 56 - used );
 335     }
 336     else
 337     {
 338         /* We'll need an extra block */
 339         memset( ctx->buffer + used, 0, 64 - used );
 340
 341         if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
 342             return( ret );
 343
 344         memset( ctx->buffer, 0, 56 );
 345     }
 346
 347     /*
 348      * Add message length
 349      */
 350     high = ( ctx->total[0] >> 29 )
 351          | ( ctx->total[1] <<  3 );
 352     low  = ( ctx->total[0] <<  3 );
 353
 354     PUT_UINT32_LE( low,  ctx->buffer, 56 );
 355     PUT_UINT32_LE( high, ctx->buffer, 60 );
 356
 357     if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
 358         return( ret );
 359
 360     /*
 361      * Output final state
 362      */
 363     PUT_UINT32_LE( ctx->state[0], output,  0 );
 364     PUT_UINT32_LE( ctx->state[1], output,  4 );
 365     PUT_UINT32_LE( ctx->state[2], output,  8 );
 366     PUT_UINT32_LE( ctx->state[3], output, 12 );
 367
 368     return( 0 );
 369 }
 370
 371 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
 372 void mbedtls_md5_finish( mbedtls_md5_context *ctx,
 373                          unsigned char output[16] )
 374 {
 375     mbedtls_md5_finish_ret( ctx, output );
 376 }
 377 #endif
 378
 379 #endif /* !MBEDTLS_MD5_ALT */
 380
 381 /*
 382  * output = MD5( input buffer )
 383  */
 384 int mbedtls_md5_ret( const unsigned char *input,
 385                      size_t ilen,
 386                      unsigned char output[16] )
 387 {
 388     int ret;
 389     mbedtls_md5_context ctx;
 390
 391     mbedtls_md5_init( &ctx );
 392
 393     if( ( ret = mbedtls_md5_starts_ret( &ctx ) ) != 0 )
 394         goto exit;
 395
 396     if( ( ret = mbedtls_md5_update_ret( &ctx, input, ilen ) ) != 0 )
 397         goto exit;
 398
 399     if( ( ret = mbedtls_md5_finish_ret( &ctx, output ) ) != 0 )
 400         goto exit;
 401
 402 exit:
 403     mbedtls_md5_free( &ctx );
 404
 405     return( ret );
 406 }
 407
 408 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
 409 void mbedtls_md5( const unsigned char *input,
 410                   size_t ilen,
 411                   unsigned char output[16] )
 412 {
 413     mbedtls_md5_ret( input, ilen, output );
 414 }
 415 #endif
 416
 417 #if defined(MBEDTLS_SELF_TEST)
 418 /*
 419  * RFC 1321 test vectors
 420  */
 421 static const unsigned char md5_test_buf[7][81] =
 422 {
 423     { "" },
 424     { "a" },
 425     { "abc" },
 426     { "message digest" },
 427     { "abcdefghijklmnopqrstuvwxyz" },
 428     { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
 429     { "12345678901234567890123456789012345678901234567890123456789012"
 430       "345678901234567890" }
 431 };
 432
 433 static const size_t md5_test_buflen[7] =
 434 {
 435     0, 1, 3, 14, 26, 62, 80
 436 };
 437
 438 static const unsigned char md5_test_sum[7][16] =
 439 {
 440     { 0xD4, 0x1D, 0x8C, 0xD9, 0x8F, 0x00, 0xB2, 0x04,
 441       0xE9, 0x80, 0x09, 0x98, 0xEC, 0xF8, 0x42, 0x7E },
 442     { 0x0C, 0xC1, 0x75, 0xB9, 0xC0, 0xF1, 0xB6, 0xA8,
 443       0x31, 0xC3, 0x99, 0xE2, 0x69, 0x77, 0x26, 0x61 },
 444     { 0x90, 0x01, 0x50, 0x98, 0x3C, 0xD2, 0x4F, 0xB0,
 445       0xD6, 0x96, 0x3F, 0x7D, 0x28, 0xE1, 0x7F, 0x72 },
 446     { 0xF9, 0x6B, 0x69, 0x7D, 0x7C, 0xB7, 0x93, 0x8D,
 447       0x52, 0x5A, 0x2F, 0x31, 0xAA, 0xF1, 0x61, 0xD0 },
 448     { 0xC3, 0xFC, 0xD3, 0xD7, 0x61, 0x92, 0xE4, 0x00,
 449       0x7D, 0xFB, 0x49, 0x6C, 0xCA, 0x67, 0xE1, 0x3B },
 450     { 0xD1, 0x74, 0xAB, 0x98, 0xD2, 0x77, 0xD9, 0xF5,
 451       0xA5, 0x61, 0x1C, 0x2C, 0x9F, 0x41, 0x9D, 0x9F },
 452     { 0x57, 0xED, 0xF4, 0xA2, 0x2B, 0xE3, 0xC9, 0x55,
 453       0xAC, 0x49, 0xDA, 0x2E, 0x21, 0x07, 0xB6, 0x7A }
 454 };
 455
 456 /*
 457  * Checkup routine
 458  */
 459 int mbedtls_md5_self_test( int verbose )
 460 {
 461     int i, ret = 0;
 462     unsigned char md5sum[16];
 463
 464     for( i = 0; i < 7; i++ )
 465     {
 466         if( verbose != 0 )
 467             mbedtls_printf( "  MD5 test #%d: ", i + 1 );
 468
 469         ret = mbedtls_md5_ret( md5_test_buf[i], md5_test_buflen[i], md5sum );
 470         if( ret != 0 )
 471             goto fail;
 472
 473         if( memcmp( md5sum, md5_test_sum[i], 16 ) != 0 )
 474         {
 475             ret = 1;
 476             goto fail;
 477         }
 478
 479         if( verbose != 0 )
 480             mbedtls_printf( "passed\n" );
 481     }
 482
 483     if( verbose != 0 )
 484         mbedtls_printf( "\n" );
 485
 486     return( 0 );
 487
 488 fail:
 489     if( verbose != 0 )
 490         mbedtls_printf( "failed\n" );
 491
 492     return( ret );
 493 }
 494
 495 #endif /* MBEDTLS_SELF_TEST */
 496
 497 #endif /* MBEDTLS_MD5_C */