1 /*
2 * RFC 1321 compliant MD5 implementation
3 *
4 * Copyright The Mbed TLS Contributors
5 * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
6 *
7 * This file is provided under the Apache License 2.0, or the
8 * GNU General Public License v2.0 or later.
9 *
10 * **********
11 * Apache License 2.0:
12 *
13 * Licensed under the Apache License, Version 2.0 (the "License"); you may
14 * not use this file except in compliance with the License.
15 * You may obtain a copy of the License at
16 *
17 * http://www.apache.org/licenses/LICENSE-2.0
18 *
19 * Unless required by applicable law or agreed to in writing, software
20 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
21 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
22 * See the License for the specific language governing permissions and
23 * limitations under the License.
24 *
25 * **********
26 *
27 * **********
28 * GNU General Public License v2.0 or later:
29 *
30 * This program is free software; you can redistribute it and/or modify
31 * it under the terms of the GNU General Public License as published by
32 * the Free Software Foundation; either version 2 of the License, or
33 * (at your option) any later version.
34 *
35 * This program is distributed in the hope that it will be useful,
36 * but WITHOUT ANY WARRANTY; without even the implied warranty of
37 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
38 * GNU General Public License for more details.
39 *
40 * You should have received a copy of the GNU General Public License along
41 * with this program; if not, write to the Free Software Foundation, Inc.,
42 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
43 *
44 * **********
45 */
46 /*
47 * The MD5 algorithm was designed by Ron Rivest in 1991.
48 *
49 * http://www.ietf.org/rfc/rfc1321.txt
50 */
51
52 #if !defined(MBEDTLS_CONFIG_FILE)
53 #include "mbedtls/config.h"
54 #else
55 #include MBEDTLS_CONFIG_FILE
56 #endif
57
58 #if defined(MBEDTLS_MD5_C)
59
60 #include "mbedtls/md5.h"
61 #include "mbedtls/platform_util.h"
62
63 #include <string.h>
64
65 #if defined(MBEDTLS_SELF_TEST)
66 #if defined(MBEDTLS_PLATFORM_C)
67 #include "mbedtls/platform.h"
68 #else
69 #include <stdio.h>
70 #define mbedtls_printf printf
71 #endif /* MBEDTLS_PLATFORM_C */
72 #endif /* MBEDTLS_SELF_TEST */
73
74 #if !defined(MBEDTLS_MD5_ALT)
75
76 /*
77 * 32-bit integer manipulation macros (little endian)
78 */
79 #ifndef GET_UINT32_LE
80 #define GET_UINT32_LE(n,b,i) \
81 { \
82 (n) = ( (uint32_t) (b)[(i) ] ) \
83 | ( (uint32_t) (b)[(i) + 1] << 8 ) \
84 | ( (uint32_t) (b)[(i) + 2] << 16 ) \
85 | ( (uint32_t) (b)[(i) + 3] << 24 ); \
86 }
87 #endif
88
89 #ifndef PUT_UINT32_LE
90 #define PUT_UINT32_LE(n,b,i) \
91 { \
92 (b)[(i) ] = (unsigned char) ( ( (n) ) & 0xFF ); \
93 (b)[(i) + 1] = (unsigned char) ( ( (n) >> 8 ) & 0xFF ); \
94 (b)[(i) + 2] = (unsigned char) ( ( (n) >> 16 ) & 0xFF ); \
95 (b)[(i) + 3] = (unsigned char) ( ( (n) >> 24 ) & 0xFF ); \
96 }
97 #endif
98
mbedtls_md5_init(mbedtls_md5_context * ctx)99 void mbedtls_md5_init( mbedtls_md5_context *ctx )
100 {
101 memset( ctx, 0, sizeof( mbedtls_md5_context ) );
102 }
103
mbedtls_md5_free(mbedtls_md5_context * ctx)104 void mbedtls_md5_free( mbedtls_md5_context *ctx )
105 {
106 if( ctx == NULL )
107 return;
108
109 mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md5_context ) );
110 }
111
mbedtls_md5_clone(mbedtls_md5_context * dst,const mbedtls_md5_context * src)112 void mbedtls_md5_clone( mbedtls_md5_context *dst,
113 const mbedtls_md5_context *src )
114 {
115 *dst = *src;
116 }
117
118 /*
119 * MD5 context setup
120 */
mbedtls_md5_starts_ret(mbedtls_md5_context * ctx)121 int mbedtls_md5_starts_ret( mbedtls_md5_context *ctx )
122 {
123 ctx->total[0] = 0;
124 ctx->total[1] = 0;
125
126 ctx->state[0] = 0x67452301;
127 ctx->state[1] = 0xEFCDAB89;
128 ctx->state[2] = 0x98BADCFE;
129 ctx->state[3] = 0x10325476;
130
131 return( 0 );
132 }
133
134 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
mbedtls_md5_starts(mbedtls_md5_context * ctx)135 void mbedtls_md5_starts( mbedtls_md5_context *ctx )
136 {
137 mbedtls_md5_starts_ret( ctx );
138 }
139 #endif
140
141 #if !defined(MBEDTLS_MD5_PROCESS_ALT)
mbedtls_internal_md5_process(mbedtls_md5_context * ctx,const unsigned char data[64])142 int mbedtls_internal_md5_process( mbedtls_md5_context *ctx,
143 const unsigned char data[64] )
144 {
145 uint32_t X[16], A, B, C, D;
146
147 GET_UINT32_LE( X[ 0], data, 0 );
148 GET_UINT32_LE( X[ 1], data, 4 );
149 GET_UINT32_LE( X[ 2], data, 8 );
150 GET_UINT32_LE( X[ 3], data, 12 );
151 GET_UINT32_LE( X[ 4], data, 16 );
152 GET_UINT32_LE( X[ 5], data, 20 );
153 GET_UINT32_LE( X[ 6], data, 24 );
154 GET_UINT32_LE( X[ 7], data, 28 );
155 GET_UINT32_LE( X[ 8], data, 32 );
156 GET_UINT32_LE( X[ 9], data, 36 );
157 GET_UINT32_LE( X[10], data, 40 );
158 GET_UINT32_LE( X[11], data, 44 );
159 GET_UINT32_LE( X[12], data, 48 );
160 GET_UINT32_LE( X[13], data, 52 );
161 GET_UINT32_LE( X[14], data, 56 );
162 GET_UINT32_LE( X[15], data, 60 );
163
164 #define S(x,n) \
165 ( ( (x) << (n) ) | ( ( (x) & 0xFFFFFFFF) >> ( 32 - (n) ) ) )
166
167 #define P(a,b,c,d,k,s,t) \
168 do \
169 { \
170 (a) += F((b),(c),(d)) + X[(k)] + (t); \
171 (a) = S((a),(s)) + (b); \
172 } while( 0 )
173
174 A = ctx->state[0];
175 B = ctx->state[1];
176 C = ctx->state[2];
177 D = ctx->state[3];
178
179 #define F(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
180
181 P( A, B, C, D, 0, 7, 0xD76AA478 );
182 P( D, A, B, C, 1, 12, 0xE8C7B756 );
183 P( C, D, A, B, 2, 17, 0x242070DB );
184 P( B, C, D, A, 3, 22, 0xC1BDCEEE );
185 P( A, B, C, D, 4, 7, 0xF57C0FAF );
186 P( D, A, B, C, 5, 12, 0x4787C62A );
187 P( C, D, A, B, 6, 17, 0xA8304613 );
188 P( B, C, D, A, 7, 22, 0xFD469501 );
189 P( A, B, C, D, 8, 7, 0x698098D8 );
190 P( D, A, B, C, 9, 12, 0x8B44F7AF );
191 P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
192 P( B, C, D, A, 11, 22, 0x895CD7BE );
193 P( A, B, C, D, 12, 7, 0x6B901122 );
194 P( D, A, B, C, 13, 12, 0xFD987193 );
195 P( C, D, A, B, 14, 17, 0xA679438E );
196 P( B, C, D, A, 15, 22, 0x49B40821 );
197
198 #undef F
199
200 #define F(x,y,z) ((y) ^ ((z) & ((x) ^ (y))))
201
202 P( A, B, C, D, 1, 5, 0xF61E2562 );
203 P( D, A, B, C, 6, 9, 0xC040B340 );
204 P( C, D, A, B, 11, 14, 0x265E5A51 );
205 P( B, C, D, A, 0, 20, 0xE9B6C7AA );
206 P( A, B, C, D, 5, 5, 0xD62F105D );
207 P( D, A, B, C, 10, 9, 0x02441453 );
208 P( C, D, A, B, 15, 14, 0xD8A1E681 );
209 P( B, C, D, A, 4, 20, 0xE7D3FBC8 );
210 P( A, B, C, D, 9, 5, 0x21E1CDE6 );
211 P( D, A, B, C, 14, 9, 0xC33707D6 );
212 P( C, D, A, B, 3, 14, 0xF4D50D87 );
213 P( B, C, D, A, 8, 20, 0x455A14ED );
214 P( A, B, C, D, 13, 5, 0xA9E3E905 );
215 P( D, A, B, C, 2, 9, 0xFCEFA3F8 );
216 P( C, D, A, B, 7, 14, 0x676F02D9 );
217 P( B, C, D, A, 12, 20, 0x8D2A4C8A );
218
219 #undef F
220
221 #define F(x,y,z) ((x) ^ (y) ^ (z))
222
223 P( A, B, C, D, 5, 4, 0xFFFA3942 );
224 P( D, A, B, C, 8, 11, 0x8771F681 );
225 P( C, D, A, B, 11, 16, 0x6D9D6122 );
226 P( B, C, D, A, 14, 23, 0xFDE5380C );
227 P( A, B, C, D, 1, 4, 0xA4BEEA44 );
228 P( D, A, B, C, 4, 11, 0x4BDECFA9 );
229 P( C, D, A, B, 7, 16, 0xF6BB4B60 );
230 P( B, C, D, A, 10, 23, 0xBEBFBC70 );
231 P( A, B, C, D, 13, 4, 0x289B7EC6 );
232 P( D, A, B, C, 0, 11, 0xEAA127FA );
233 P( C, D, A, B, 3, 16, 0xD4EF3085 );
234 P( B, C, D, A, 6, 23, 0x04881D05 );
235 P( A, B, C, D, 9, 4, 0xD9D4D039 );
236 P( D, A, B, C, 12, 11, 0xE6DB99E5 );
237 P( C, D, A, B, 15, 16, 0x1FA27CF8 );
238 P( B, C, D, A, 2, 23, 0xC4AC5665 );
239
240 #undef F
241
242 #define F(x,y,z) ((y) ^ ((x) | ~(z)))
243
244 P( A, B, C, D, 0, 6, 0xF4292244 );
245 P( D, A, B, C, 7, 10, 0x432AFF97 );
246 P( C, D, A, B, 14, 15, 0xAB9423A7 );
247 P( B, C, D, A, 5, 21, 0xFC93A039 );
248 P( A, B, C, D, 12, 6, 0x655B59C3 );
249 P( D, A, B, C, 3, 10, 0x8F0CCC92 );
250 P( C, D, A, B, 10, 15, 0xFFEFF47D );
251 P( B, C, D, A, 1, 21, 0x85845DD1 );
252 P( A, B, C, D, 8, 6, 0x6FA87E4F );
253 P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
254 P( C, D, A, B, 6, 15, 0xA3014314 );
255 P( B, C, D, A, 13, 21, 0x4E0811A1 );
256 P( A, B, C, D, 4, 6, 0xF7537E82 );
257 P( D, A, B, C, 11, 10, 0xBD3AF235 );
258 P( C, D, A, B, 2, 15, 0x2AD7D2BB );
259 P( B, C, D, A, 9, 21, 0xEB86D391 );
260
261 #undef F
262
263 ctx->state[0] += A;
264 ctx->state[1] += B;
265 ctx->state[2] += C;
266 ctx->state[3] += D;
267
268 return( 0 );
269 }
270
271 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
mbedtls_md5_process(mbedtls_md5_context * ctx,const unsigned char data[64])272 void mbedtls_md5_process( mbedtls_md5_context *ctx,
273 const unsigned char data[64] )
274 {
275 mbedtls_internal_md5_process( ctx, data );
276 }
277 #endif
278 #endif /* !MBEDTLS_MD5_PROCESS_ALT */
279
280 /*
281 * MD5 process buffer
282 */
mbedtls_md5_update_ret(mbedtls_md5_context * ctx,const unsigned char * input,size_t ilen)283 int mbedtls_md5_update_ret( mbedtls_md5_context *ctx,
284 const unsigned char *input,
285 size_t ilen )
286 {
287 int ret;
288 size_t fill;
289 uint32_t left;
290
291 if( ilen == 0 )
292 return( 0 );
293
294 left = ctx->total[0] & 0x3F;
295 fill = 64 - left;
296
297 ctx->total[0] += (uint32_t) ilen;
298 ctx->total[0] &= 0xFFFFFFFF;
299
300 if( ctx->total[0] < (uint32_t) ilen )
301 ctx->total[1]++;
302
303 if( left && ilen >= fill )
304 {
305 memcpy( (void *) (ctx->buffer + left), input, fill );
306 if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
307 return( ret );
308
309 input += fill;
310 ilen -= fill;
311 left = 0;
312 }
313
314 while( ilen >= 64 )
315 {
316 if( ( ret = mbedtls_internal_md5_process( ctx, input ) ) != 0 )
317 return( ret );
318
319 input += 64;
320 ilen -= 64;
321 }
322
323 if( ilen > 0 )
324 {
325 memcpy( (void *) (ctx->buffer + left), input, ilen );
326 }
327
328 return( 0 );
329 }
330
331 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
mbedtls_md5_update(mbedtls_md5_context * ctx,const unsigned char * input,size_t ilen)332 void mbedtls_md5_update( mbedtls_md5_context *ctx,
333 const unsigned char *input,
334 size_t ilen )
335 {
336 mbedtls_md5_update_ret( ctx, input, ilen );
337 }
338 #endif
339
340 /*
341 * MD5 final digest
342 */
mbedtls_md5_finish_ret(mbedtls_md5_context * ctx,unsigned char output[16])343 int mbedtls_md5_finish_ret( mbedtls_md5_context *ctx,
344 unsigned char output[16] )
345 {
346 int ret;
347 uint32_t used;
348 uint32_t high, low;
349
350 /*
351 * Add padding: 0x80 then 0x00 until 8 bytes remain for the length
352 */
353 used = ctx->total[0] & 0x3F;
354
355 ctx->buffer[used++] = 0x80;
356
357 if( used <= 56 )
358 {
359 /* Enough room for padding + length in current block */
360 memset( ctx->buffer + used, 0, 56 - used );
361 }
362 else
363 {
364 /* We'll need an extra block */
365 memset( ctx->buffer + used, 0, 64 - used );
366
367 if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
368 return( ret );
369
370 memset( ctx->buffer, 0, 56 );
371 }
372
373 /*
374 * Add message length
375 */
376 high = ( ctx->total[0] >> 29 )
377 | ( ctx->total[1] << 3 );
378 low = ( ctx->total[0] << 3 );
379
380 PUT_UINT32_LE( low, ctx->buffer, 56 );
381 PUT_UINT32_LE( high, ctx->buffer, 60 );
382
383 if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
384 return( ret );
385
386 /*
387 * Output final state
388 */
389 PUT_UINT32_LE( ctx->state[0], output, 0 );
390 PUT_UINT32_LE( ctx->state[1], output, 4 );
391 PUT_UINT32_LE( ctx->state[2], output, 8 );
392 PUT_UINT32_LE( ctx->state[3], output, 12 );
393
394 return( 0 );
395 }
396
397 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
mbedtls_md5_finish(mbedtls_md5_context * ctx,unsigned char output[16])398 void mbedtls_md5_finish( mbedtls_md5_context *ctx,
399 unsigned char output[16] )
400 {
401 mbedtls_md5_finish_ret( ctx, output );
402 }
403 #endif
404
405 #endif /* !MBEDTLS_MD5_ALT */
406
407 /*
408 * output = MD5( input buffer )
409 */
mbedtls_md5_ret(const unsigned char * input,size_t ilen,unsigned char output[16])410 int mbedtls_md5_ret( const unsigned char *input,
411 size_t ilen,
412 unsigned char output[16] )
413 {
414 int ret;
415 mbedtls_md5_context ctx;
416
417 mbedtls_md5_init( &ctx );
418
419 if( ( ret = mbedtls_md5_starts_ret( &ctx ) ) != 0 )
420 goto exit;
421
422 if( ( ret = mbedtls_md5_update_ret( &ctx, input, ilen ) ) != 0 )
423 goto exit;
424
425 if( ( ret = mbedtls_md5_finish_ret( &ctx, output ) ) != 0 )
426 goto exit;
427
428 exit:
429 mbedtls_md5_free( &ctx );
430
431 return( ret );
432 }
433
434 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
mbedtls_md5(const unsigned char * input,size_t ilen,unsigned char output[16])435 void mbedtls_md5( const unsigned char *input,
436 size_t ilen,
437 unsigned char output[16] )
438 {
439 mbedtls_md5_ret( input, ilen, output );
440 }
441 #endif
442
443 #if defined(MBEDTLS_SELF_TEST)
444 /*
445 * RFC 1321 test vectors
446 */
447 static const unsigned char md5_test_buf[7][81] =
448 {
449 { "" },
450 { "a" },
451 { "abc" },
452 { "message digest" },
453 { "abcdefghijklmnopqrstuvwxyz" },
454 { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
455 { "12345678901234567890123456789012345678901234567890123456789012"
456 "345678901234567890" }
457 };
458
459 static const size_t md5_test_buflen[7] =
460 {
461 0, 1, 3, 14, 26, 62, 80
462 };
463
464 static const unsigned char md5_test_sum[7][16] =
465 {
466 { 0xD4, 0x1D, 0x8C, 0xD9, 0x8F, 0x00, 0xB2, 0x04,
467 0xE9, 0x80, 0x09, 0x98, 0xEC, 0xF8, 0x42, 0x7E },
468 { 0x0C, 0xC1, 0x75, 0xB9, 0xC0, 0xF1, 0xB6, 0xA8,
469 0x31, 0xC3, 0x99, 0xE2, 0x69, 0x77, 0x26, 0x61 },
470 { 0x90, 0x01, 0x50, 0x98, 0x3C, 0xD2, 0x4F, 0xB0,
471 0xD6, 0x96, 0x3F, 0x7D, 0x28, 0xE1, 0x7F, 0x72 },
472 { 0xF9, 0x6B, 0x69, 0x7D, 0x7C, 0xB7, 0x93, 0x8D,
473 0x52, 0x5A, 0x2F, 0x31, 0xAA, 0xF1, 0x61, 0xD0 },
474 { 0xC3, 0xFC, 0xD3, 0xD7, 0x61, 0x92, 0xE4, 0x00,
475 0x7D, 0xFB, 0x49, 0x6C, 0xCA, 0x67, 0xE1, 0x3B },
476 { 0xD1, 0x74, 0xAB, 0x98, 0xD2, 0x77, 0xD9, 0xF5,
477 0xA5, 0x61, 0x1C, 0x2C, 0x9F, 0x41, 0x9D, 0x9F },
478 { 0x57, 0xED, 0xF4, 0xA2, 0x2B, 0xE3, 0xC9, 0x55,
479 0xAC, 0x49, 0xDA, 0x2E, 0x21, 0x07, 0xB6, 0x7A }
480 };
481
482 /*
483 * Checkup routine
484 */
mbedtls_md5_self_test(int verbose)485 int mbedtls_md5_self_test( int verbose )
486 {
487 int i, ret = 0;
488 unsigned char md5sum[16];
489
490 for( i = 0; i < 7; i++ )
491 {
492 if( verbose != 0 )
493 mbedtls_printf( " MD5 test #%d: ", i + 1 );
494
495 ret = mbedtls_md5_ret( md5_test_buf[i], md5_test_buflen[i], md5sum );
496 if( ret != 0 )
497 goto fail;
498
499 if( memcmp( md5sum, md5_test_sum[i], 16 ) != 0 )
500 {
501 ret = 1;
502 goto fail;
503 }
504
505 if( verbose != 0 )
506 mbedtls_printf( "passed\n" );
507 }
508
509 if( verbose != 0 )
510 mbedtls_printf( "\n" );
511
512 return( 0 );
513
514 fail:
515 if( verbose != 0 )
516 mbedtls_printf( "failed\n" );
517
518 return( ret );
519 }
520
521 #endif /* MBEDTLS_SELF_TEST */
522
523 #endif /* MBEDTLS_MD5_C */
524