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 #include "mbedtls/error.h" 38 39 #include <string.h> 40 41 #if defined(MBEDTLS_SELF_TEST) 42 #if defined(MBEDTLS_PLATFORM_C) 43 #include "mbedtls/platform.h" 44 #else 45 #include <stdio.h> 46 #define mbedtls_printf printf 47 #endif /* MBEDTLS_PLATFORM_C */ 48 #endif /* MBEDTLS_SELF_TEST */ 49 50 #if !defined(MBEDTLS_MD5_ALT) 51 52 /* 53 * 32-bit integer manipulation macros (little endian) 54 */ 55 #ifndef GET_UINT32_LE 56 #define GET_UINT32_LE(n,b,i) \ 57 { \ 58 (n) = ( (uint32_t) (b)[(i) ] ) \ 59 | ( (uint32_t) (b)[(i) + 1] << 8 ) \ 60 | ( (uint32_t) (b)[(i) + 2] << 16 ) \ 61 | ( (uint32_t) (b)[(i) + 3] << 24 ); \ 62 } 63 #endif 64 65 #ifndef PUT_UINT32_LE 66 #define PUT_UINT32_LE(n,b,i) \ 67 { \ 68 (b)[(i) ] = (unsigned char) ( ( (n) ) & 0xFF ); \ 69 (b)[(i) + 1] = (unsigned char) ( ( (n) >> 8 ) & 0xFF ); \ 70 (b)[(i) + 2] = (unsigned char) ( ( (n) >> 16 ) & 0xFF ); \ 71 (b)[(i) + 3] = (unsigned char) ( ( (n) >> 24 ) & 0xFF ); \ 72 } 73 #endif 74 75 void mbedtls_md5_init( mbedtls_md5_context *ctx ) 76 { 77 memset( ctx, 0, sizeof( mbedtls_md5_context ) ); 78 } 79 80 void mbedtls_md5_free( mbedtls_md5_context *ctx ) 81 { 82 if( ctx == NULL ) 83 return; 84 85 mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md5_context ) ); 86 } 87 88 void mbedtls_md5_clone( mbedtls_md5_context *dst, 89 const mbedtls_md5_context *src ) 90 { 91 *dst = *src; 92 } 93 94 /* 95 * MD5 context setup 96 */ 97 int mbedtls_md5_starts_ret( mbedtls_md5_context *ctx ) 98 { 99 ctx->total[0] = 0; 100 ctx->total[1] = 0; 101 102 ctx->state[0] = 0x67452301; 103 ctx->state[1] = 0xEFCDAB89; 104 ctx->state[2] = 0x98BADCFE; 105 ctx->state[3] = 0x10325476; 106 107 return( 0 ); 108 } 109 110 #if !defined(MBEDTLS_DEPRECATED_REMOVED) 111 void mbedtls_md5_starts( mbedtls_md5_context *ctx ) 112 { 113 mbedtls_md5_starts_ret( ctx ); 114 } 115 #endif 116 117 #if !defined(MBEDTLS_MD5_PROCESS_ALT) 118 int mbedtls_internal_md5_process( mbedtls_md5_context *ctx, 119 const unsigned char data[64] ) 120 { 121 uint32_t X[16], A, B, C, D; 122 123 GET_UINT32_LE( X[ 0], data, 0 ); 124 GET_UINT32_LE( X[ 1], data, 4 ); 125 GET_UINT32_LE( X[ 2], data, 8 ); 126 GET_UINT32_LE( X[ 3], data, 12 ); 127 GET_UINT32_LE( X[ 4], data, 16 ); 128 GET_UINT32_LE( X[ 5], data, 20 ); 129 GET_UINT32_LE( X[ 6], data, 24 ); 130 GET_UINT32_LE( X[ 7], data, 28 ); 131 GET_UINT32_LE( X[ 8], data, 32 ); 132 GET_UINT32_LE( X[ 9], data, 36 ); 133 GET_UINT32_LE( X[10], data, 40 ); 134 GET_UINT32_LE( X[11], data, 44 ); 135 GET_UINT32_LE( X[12], data, 48 ); 136 GET_UINT32_LE( X[13], data, 52 ); 137 GET_UINT32_LE( X[14], data, 56 ); 138 GET_UINT32_LE( X[15], data, 60 ); 139 140 #define S(x,n) \ 141 ( ( (x) << (n) ) | ( ( (x) & 0xFFFFFFFF) >> ( 32 - (n) ) ) ) 142 143 #define P(a,b,c,d,k,s,t) \ 144 do \ 145 { \ 146 (a) += F((b),(c),(d)) + X[(k)] + (t); \ 147 (a) = S((a),(s)) + (b); \ 148 } while( 0 ) 149 150 A = ctx->state[0]; 151 B = ctx->state[1]; 152 C = ctx->state[2]; 153 D = ctx->state[3]; 154 155 #define F(x,y,z) ((z) ^ ((x) & ((y) ^ (z)))) 156 157 P( A, B, C, D, 0, 7, 0xD76AA478 ); 158 P( D, A, B, C, 1, 12, 0xE8C7B756 ); 159 P( C, D, A, B, 2, 17, 0x242070DB ); 160 P( B, C, D, A, 3, 22, 0xC1BDCEEE ); 161 P( A, B, C, D, 4, 7, 0xF57C0FAF ); 162 P( D, A, B, C, 5, 12, 0x4787C62A ); 163 P( C, D, A, B, 6, 17, 0xA8304613 ); 164 P( B, C, D, A, 7, 22, 0xFD469501 ); 165 P( A, B, C, D, 8, 7, 0x698098D8 ); 166 P( D, A, B, C, 9, 12, 0x8B44F7AF ); 167 P( C, D, A, B, 10, 17, 0xFFFF5BB1 ); 168 P( B, C, D, A, 11, 22, 0x895CD7BE ); 169 P( A, B, C, D, 12, 7, 0x6B901122 ); 170 P( D, A, B, C, 13, 12, 0xFD987193 ); 171 P( C, D, A, B, 14, 17, 0xA679438E ); 172 P( B, C, D, A, 15, 22, 0x49B40821 ); 173 174 #undef F 175 176 #define F(x,y,z) ((y) ^ ((z) & ((x) ^ (y)))) 177 178 P( A, B, C, D, 1, 5, 0xF61E2562 ); 179 P( D, A, B, C, 6, 9, 0xC040B340 ); 180 P( C, D, A, B, 11, 14, 0x265E5A51 ); 181 P( B, C, D, A, 0, 20, 0xE9B6C7AA ); 182 P( A, B, C, D, 5, 5, 0xD62F105D ); 183 P( D, A, B, C, 10, 9, 0x02441453 ); 184 P( C, D, A, B, 15, 14, 0xD8A1E681 ); 185 P( B, C, D, A, 4, 20, 0xE7D3FBC8 ); 186 P( A, B, C, D, 9, 5, 0x21E1CDE6 ); 187 P( D, A, B, C, 14, 9, 0xC33707D6 ); 188 P( C, D, A, B, 3, 14, 0xF4D50D87 ); 189 P( B, C, D, A, 8, 20, 0x455A14ED ); 190 P( A, B, C, D, 13, 5, 0xA9E3E905 ); 191 P( D, A, B, C, 2, 9, 0xFCEFA3F8 ); 192 P( C, D, A, B, 7, 14, 0x676F02D9 ); 193 P( B, C, D, A, 12, 20, 0x8D2A4C8A ); 194 195 #undef F 196 197 #define F(x,y,z) ((x) ^ (y) ^ (z)) 198 199 P( A, B, C, D, 5, 4, 0xFFFA3942 ); 200 P( D, A, B, C, 8, 11, 0x8771F681 ); 201 P( C, D, A, B, 11, 16, 0x6D9D6122 ); 202 P( B, C, D, A, 14, 23, 0xFDE5380C ); 203 P( A, B, C, D, 1, 4, 0xA4BEEA44 ); 204 P( D, A, B, C, 4, 11, 0x4BDECFA9 ); 205 P( C, D, A, B, 7, 16, 0xF6BB4B60 ); 206 P( B, C, D, A, 10, 23, 0xBEBFBC70 ); 207 P( A, B, C, D, 13, 4, 0x289B7EC6 ); 208 P( D, A, B, C, 0, 11, 0xEAA127FA ); 209 P( C, D, A, B, 3, 16, 0xD4EF3085 ); 210 P( B, C, D, A, 6, 23, 0x04881D05 ); 211 P( A, B, C, D, 9, 4, 0xD9D4D039 ); 212 P( D, A, B, C, 12, 11, 0xE6DB99E5 ); 213 P( C, D, A, B, 15, 16, 0x1FA27CF8 ); 214 P( B, C, D, A, 2, 23, 0xC4AC5665 ); 215 216 #undef F 217 218 #define F(x,y,z) ((y) ^ ((x) | ~(z))) 219 220 P( A, B, C, D, 0, 6, 0xF4292244 ); 221 P( D, A, B, C, 7, 10, 0x432AFF97 ); 222 P( C, D, A, B, 14, 15, 0xAB9423A7 ); 223 P( B, C, D, A, 5, 21, 0xFC93A039 ); 224 P( A, B, C, D, 12, 6, 0x655B59C3 ); 225 P( D, A, B, C, 3, 10, 0x8F0CCC92 ); 226 P( C, D, A, B, 10, 15, 0xFFEFF47D ); 227 P( B, C, D, A, 1, 21, 0x85845DD1 ); 228 P( A, B, C, D, 8, 6, 0x6FA87E4F ); 229 P( D, A, B, C, 15, 10, 0xFE2CE6E0 ); 230 P( C, D, A, B, 6, 15, 0xA3014314 ); 231 P( B, C, D, A, 13, 21, 0x4E0811A1 ); 232 P( A, B, C, D, 4, 6, 0xF7537E82 ); 233 P( D, A, B, C, 11, 10, 0xBD3AF235 ); 234 P( C, D, A, B, 2, 15, 0x2AD7D2BB ); 235 P( B, C, D, A, 9, 21, 0xEB86D391 ); 236 237 #undef F 238 239 ctx->state[0] += A; 240 ctx->state[1] += B; 241 ctx->state[2] += C; 242 ctx->state[3] += D; 243 244 return( 0 ); 245 } 246 247 #if !defined(MBEDTLS_DEPRECATED_REMOVED) 248 void mbedtls_md5_process( mbedtls_md5_context *ctx, 249 const unsigned char data[64] ) 250 { 251 mbedtls_internal_md5_process( ctx, data ); 252 } 253 #endif 254 #endif /* !MBEDTLS_MD5_PROCESS_ALT */ 255 256 /* 257 * MD5 process buffer 258 */ 259 int mbedtls_md5_update_ret( mbedtls_md5_context *ctx, 260 const unsigned char *input, 261 size_t ilen ) 262 { 263 int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; 264 size_t fill; 265 uint32_t left; 266 267 if( ilen == 0 ) 268 return( 0 ); 269 270 left = ctx->total[0] & 0x3F; 271 fill = 64 - left; 272 273 ctx->total[0] += (uint32_t) ilen; 274 ctx->total[0] &= 0xFFFFFFFF; 275 276 if( ctx->total[0] < (uint32_t) ilen ) 277 ctx->total[1]++; 278 279 if( left && ilen >= fill ) 280 { 281 memcpy( (void *) (ctx->buffer + left), input, fill ); 282 if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 ) 283 return( ret ); 284 285 input += fill; 286 ilen -= fill; 287 left = 0; 288 } 289 290 while( ilen >= 64 ) 291 { 292 if( ( ret = mbedtls_internal_md5_process( ctx, input ) ) != 0 ) 293 return( ret ); 294 295 input += 64; 296 ilen -= 64; 297 } 298 299 if( ilen > 0 ) 300 { 301 memcpy( (void *) (ctx->buffer + left), input, ilen ); 302 } 303 304 return( 0 ); 305 } 306 307 #if !defined(MBEDTLS_DEPRECATED_REMOVED) 308 void mbedtls_md5_update( mbedtls_md5_context *ctx, 309 const unsigned char *input, 310 size_t ilen ) 311 { 312 mbedtls_md5_update_ret( ctx, input, ilen ); 313 } 314 #endif 315 316 /* 317 * MD5 final digest 318 */ 319 int mbedtls_md5_finish_ret( mbedtls_md5_context *ctx, 320 unsigned char output[16] ) 321 { 322 int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; 323 uint32_t used; 324 uint32_t high, low; 325 326 /* 327 * Add padding: 0x80 then 0x00 until 8 bytes remain for the length 328 */ 329 used = ctx->total[0] & 0x3F; 330 331 ctx->buffer[used++] = 0x80; 332 333 if( used <= 56 ) 334 { 335 /* Enough room for padding + length in current block */ 336 memset( ctx->buffer + used, 0, 56 - used ); 337 } 338 else 339 { 340 /* We'll need an extra block */ 341 memset( ctx->buffer + used, 0, 64 - used ); 342 343 if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 ) 344 return( ret ); 345 346 memset( ctx->buffer, 0, 56 ); 347 } 348 349 /* 350 * Add message length 351 */ 352 high = ( ctx->total[0] >> 29 ) 353 | ( ctx->total[1] << 3 ); 354 low = ( ctx->total[0] << 3 ); 355 356 PUT_UINT32_LE( low, ctx->buffer, 56 ); 357 PUT_UINT32_LE( high, ctx->buffer, 60 ); 358 359 if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 ) 360 return( ret ); 361 362 /* 363 * Output final state 364 */ 365 PUT_UINT32_LE( ctx->state[0], output, 0 ); 366 PUT_UINT32_LE( ctx->state[1], output, 4 ); 367 PUT_UINT32_LE( ctx->state[2], output, 8 ); 368 PUT_UINT32_LE( ctx->state[3], output, 12 ); 369 370 return( 0 ); 371 } 372 373 #if !defined(MBEDTLS_DEPRECATED_REMOVED) 374 void mbedtls_md5_finish( mbedtls_md5_context *ctx, 375 unsigned char output[16] ) 376 { 377 mbedtls_md5_finish_ret( ctx, output ); 378 } 379 #endif 380 381 #endif /* !MBEDTLS_MD5_ALT */ 382 383 /* 384 * output = MD5( input buffer ) 385 */ 386 int mbedtls_md5_ret( const unsigned char *input, 387 size_t ilen, 388 unsigned char output[16] ) 389 { 390 int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; 391 mbedtls_md5_context ctx; 392 393 mbedtls_md5_init( &ctx ); 394 395 if( ( ret = mbedtls_md5_starts_ret( &ctx ) ) != 0 ) 396 goto exit; 397 398 if( ( ret = mbedtls_md5_update_ret( &ctx, input, ilen ) ) != 0 ) 399 goto exit; 400 401 if( ( ret = mbedtls_md5_finish_ret( &ctx, output ) ) != 0 ) 402 goto exit; 403 404 exit: 405 mbedtls_md5_free( &ctx ); 406 407 return( ret ); 408 } 409 410 #if !defined(MBEDTLS_DEPRECATED_REMOVED) 411 void mbedtls_md5( const unsigned char *input, 412 size_t ilen, 413 unsigned char output[16] ) 414 { 415 mbedtls_md5_ret( input, ilen, output ); 416 } 417 #endif 418 419 #if defined(MBEDTLS_SELF_TEST) 420 /* 421 * RFC 1321 test vectors 422 */ 423 static const unsigned char md5_test_buf[7][81] = 424 { 425 { "" }, 426 { "a" }, 427 { "abc" }, 428 { "message digest" }, 429 { "abcdefghijklmnopqrstuvwxyz" }, 430 { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" }, 431 { "12345678901234567890123456789012345678901234567890123456789012" 432 "345678901234567890" } 433 }; 434 435 static const size_t md5_test_buflen[7] = 436 { 437 0, 1, 3, 14, 26, 62, 80 438 }; 439 440 static const unsigned char md5_test_sum[7][16] = 441 { 442 { 0xD4, 0x1D, 0x8C, 0xD9, 0x8F, 0x00, 0xB2, 0x04, 443 0xE9, 0x80, 0x09, 0x98, 0xEC, 0xF8, 0x42, 0x7E }, 444 { 0x0C, 0xC1, 0x75, 0xB9, 0xC0, 0xF1, 0xB6, 0xA8, 445 0x31, 0xC3, 0x99, 0xE2, 0x69, 0x77, 0x26, 0x61 }, 446 { 0x90, 0x01, 0x50, 0x98, 0x3C, 0xD2, 0x4F, 0xB0, 447 0xD6, 0x96, 0x3F, 0x7D, 0x28, 0xE1, 0x7F, 0x72 }, 448 { 0xF9, 0x6B, 0x69, 0x7D, 0x7C, 0xB7, 0x93, 0x8D, 449 0x52, 0x5A, 0x2F, 0x31, 0xAA, 0xF1, 0x61, 0xD0 }, 450 { 0xC3, 0xFC, 0xD3, 0xD7, 0x61, 0x92, 0xE4, 0x00, 451 0x7D, 0xFB, 0x49, 0x6C, 0xCA, 0x67, 0xE1, 0x3B }, 452 { 0xD1, 0x74, 0xAB, 0x98, 0xD2, 0x77, 0xD9, 0xF5, 453 0xA5, 0x61, 0x1C, 0x2C, 0x9F, 0x41, 0x9D, 0x9F }, 454 { 0x57, 0xED, 0xF4, 0xA2, 0x2B, 0xE3, 0xC9, 0x55, 455 0xAC, 0x49, 0xDA, 0x2E, 0x21, 0x07, 0xB6, 0x7A } 456 }; 457 458 /* 459 * Checkup routine 460 */ 461 int mbedtls_md5_self_test( int verbose ) 462 { 463 int i, ret = 0; 464 unsigned char md5sum[16]; 465 466 for( i = 0; i < 7; i++ ) 467 { 468 if( verbose != 0 ) 469 mbedtls_printf( " MD5 test #%d: ", i + 1 ); 470 471 ret = mbedtls_md5_ret( md5_test_buf[i], md5_test_buflen[i], md5sum ); 472 if( ret != 0 ) 473 goto fail; 474 475 if( memcmp( md5sum, md5_test_sum[i], 16 ) != 0 ) 476 { 477 ret = 1; 478 goto fail; 479 } 480 481 if( verbose != 0 ) 482 mbedtls_printf( "passed\n" ); 483 } 484 485 if( verbose != 0 ) 486 mbedtls_printf( "\n" ); 487 488 return( 0 ); 489 490 fail: 491 if( verbose != 0 ) 492 mbedtls_printf( "failed\n" ); 493 494 return( ret ); 495 } 496 497 #endif /* MBEDTLS_SELF_TEST */ 498 499 #endif /* MBEDTLS_MD5_C */ 500