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