1 /*
2 * RFC 1321 compliant MD5 implementation
3 *
4 * Copyright The Mbed TLS Contributors
5 * SPDX-License-Identifier: Apache-2.0
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 /*
20 * The MD5 algorithm was designed by Ron Rivest in 1991.
21 *
22 * http://www.ietf.org/rfc/rfc1321.txt
23 */
24
25 #include "common.h"
26
27 #if defined(MBEDTLS_MD5_C)
28
29 #include "mbedtls/md5.h"
30 #include "mbedtls/platform_util.h"
31 #include "mbedtls/error.h"
32
33 #include <string.h>
34
35 #if defined(MBEDTLS_SELF_TEST)
36 #if defined(MBEDTLS_PLATFORM_C)
37 #include "mbedtls/platform.h"
38 #else
39 #include <stdio.h>
40 #define mbedtls_printf printf
41 #endif /* MBEDTLS_PLATFORM_C */
42 #endif /* MBEDTLS_SELF_TEST */
43
44 #if !defined(MBEDTLS_MD5_ALT)
45
mbedtls_md5_init(mbedtls_md5_context * ctx)46 void mbedtls_md5_init( mbedtls_md5_context *ctx )
47 {
48 memset( ctx, 0, sizeof( mbedtls_md5_context ) );
49 }
50
mbedtls_md5_free(mbedtls_md5_context * ctx)51 void mbedtls_md5_free( mbedtls_md5_context *ctx )
52 {
53 if( ctx == NULL )
54 return;
55
56 mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md5_context ) );
57 }
58
mbedtls_md5_clone(mbedtls_md5_context * dst,const mbedtls_md5_context * src)59 void mbedtls_md5_clone( mbedtls_md5_context *dst,
60 const mbedtls_md5_context *src )
61 {
62 *dst = *src;
63 }
64
65 /*
66 * MD5 context setup
67 */
mbedtls_md5_starts_ret(mbedtls_md5_context * ctx)68 int mbedtls_md5_starts_ret( mbedtls_md5_context *ctx )
69 {
70 ctx->total[0] = 0;
71 ctx->total[1] = 0;
72
73 ctx->state[0] = 0x67452301;
74 ctx->state[1] = 0xEFCDAB89;
75 ctx->state[2] = 0x98BADCFE;
76 ctx->state[3] = 0x10325476;
77
78 return( 0 );
79 }
80
81 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
mbedtls_md5_starts(mbedtls_md5_context * ctx)82 void mbedtls_md5_starts( mbedtls_md5_context *ctx )
83 {
84 mbedtls_md5_starts_ret( ctx );
85 }
86 #endif
87
88 #if !defined(MBEDTLS_MD5_PROCESS_ALT)
mbedtls_internal_md5_process(mbedtls_md5_context * ctx,const unsigned char data[64])89 int mbedtls_internal_md5_process( mbedtls_md5_context *ctx,
90 const unsigned char data[64] )
91 {
92 struct
93 {
94 uint32_t X[16], A, B, C, D;
95 } local;
96
97 local.X[ 0] = MBEDTLS_GET_UINT32_LE( data, 0 );
98 local.X[ 1] = MBEDTLS_GET_UINT32_LE( data, 4 );
99 local.X[ 2] = MBEDTLS_GET_UINT32_LE( data, 8 );
100 local.X[ 3] = MBEDTLS_GET_UINT32_LE( data, 12 );
101 local.X[ 4] = MBEDTLS_GET_UINT32_LE( data, 16 );
102 local.X[ 5] = MBEDTLS_GET_UINT32_LE( data, 20 );
103 local.X[ 6] = MBEDTLS_GET_UINT32_LE( data, 24 );
104 local.X[ 7] = MBEDTLS_GET_UINT32_LE( data, 28 );
105 local.X[ 8] = MBEDTLS_GET_UINT32_LE( data, 32 );
106 local.X[ 9] = MBEDTLS_GET_UINT32_LE( data, 36 );
107 local.X[10] = MBEDTLS_GET_UINT32_LE( data, 40 );
108 local.X[11] = MBEDTLS_GET_UINT32_LE( data, 44 );
109 local.X[12] = MBEDTLS_GET_UINT32_LE( data, 48 );
110 local.X[13] = MBEDTLS_GET_UINT32_LE( data, 52 );
111 local.X[14] = MBEDTLS_GET_UINT32_LE( data, 56 );
112 local.X[15] = MBEDTLS_GET_UINT32_LE( data, 60 );
113
114 #define S(x,n) \
115 ( ( (x) << (n) ) | ( ( (x) & 0xFFFFFFFF) >> ( 32 - (n) ) ) )
116
117 #define P(a,b,c,d,k,s,t) \
118 do \
119 { \
120 (a) += F((b),(c),(d)) + local.X[(k)] + (t); \
121 (a) = S((a),(s)) + (b); \
122 } while( 0 )
123
124 local.A = ctx->state[0];
125 local.B = ctx->state[1];
126 local.C = ctx->state[2];
127 local.D = ctx->state[3];
128
129 #define F(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
130
131 P( local.A, local.B, local.C, local.D, 0, 7, 0xD76AA478 );
132 P( local.D, local.A, local.B, local.C, 1, 12, 0xE8C7B756 );
133 P( local.C, local.D, local.A, local.B, 2, 17, 0x242070DB );
134 P( local.B, local.C, local.D, local.A, 3, 22, 0xC1BDCEEE );
135 P( local.A, local.B, local.C, local.D, 4, 7, 0xF57C0FAF );
136 P( local.D, local.A, local.B, local.C, 5, 12, 0x4787C62A );
137 P( local.C, local.D, local.A, local.B, 6, 17, 0xA8304613 );
138 P( local.B, local.C, local.D, local.A, 7, 22, 0xFD469501 );
139 P( local.A, local.B, local.C, local.D, 8, 7, 0x698098D8 );
140 P( local.D, local.A, local.B, local.C, 9, 12, 0x8B44F7AF );
141 P( local.C, local.D, local.A, local.B, 10, 17, 0xFFFF5BB1 );
142 P( local.B, local.C, local.D, local.A, 11, 22, 0x895CD7BE );
143 P( local.A, local.B, local.C, local.D, 12, 7, 0x6B901122 );
144 P( local.D, local.A, local.B, local.C, 13, 12, 0xFD987193 );
145 P( local.C, local.D, local.A, local.B, 14, 17, 0xA679438E );
146 P( local.B, local.C, local.D, local.A, 15, 22, 0x49B40821 );
147
148 #undef F
149
150 #define F(x,y,z) ((y) ^ ((z) & ((x) ^ (y))))
151
152 P( local.A, local.B, local.C, local.D, 1, 5, 0xF61E2562 );
153 P( local.D, local.A, local.B, local.C, 6, 9, 0xC040B340 );
154 P( local.C, local.D, local.A, local.B, 11, 14, 0x265E5A51 );
155 P( local.B, local.C, local.D, local.A, 0, 20, 0xE9B6C7AA );
156 P( local.A, local.B, local.C, local.D, 5, 5, 0xD62F105D );
157 P( local.D, local.A, local.B, local.C, 10, 9, 0x02441453 );
158 P( local.C, local.D, local.A, local.B, 15, 14, 0xD8A1E681 );
159 P( local.B, local.C, local.D, local.A, 4, 20, 0xE7D3FBC8 );
160 P( local.A, local.B, local.C, local.D, 9, 5, 0x21E1CDE6 );
161 P( local.D, local.A, local.B, local.C, 14, 9, 0xC33707D6 );
162 P( local.C, local.D, local.A, local.B, 3, 14, 0xF4D50D87 );
163 P( local.B, local.C, local.D, local.A, 8, 20, 0x455A14ED );
164 P( local.A, local.B, local.C, local.D, 13, 5, 0xA9E3E905 );
165 P( local.D, local.A, local.B, local.C, 2, 9, 0xFCEFA3F8 );
166 P( local.C, local.D, local.A, local.B, 7, 14, 0x676F02D9 );
167 P( local.B, local.C, local.D, local.A, 12, 20, 0x8D2A4C8A );
168
169 #undef F
170
171 #define F(x,y,z) ((x) ^ (y) ^ (z))
172
173 P( local.A, local.B, local.C, local.D, 5, 4, 0xFFFA3942 );
174 P( local.D, local.A, local.B, local.C, 8, 11, 0x8771F681 );
175 P( local.C, local.D, local.A, local.B, 11, 16, 0x6D9D6122 );
176 P( local.B, local.C, local.D, local.A, 14, 23, 0xFDE5380C );
177 P( local.A, local.B, local.C, local.D, 1, 4, 0xA4BEEA44 );
178 P( local.D, local.A, local.B, local.C, 4, 11, 0x4BDECFA9 );
179 P( local.C, local.D, local.A, local.B, 7, 16, 0xF6BB4B60 );
180 P( local.B, local.C, local.D, local.A, 10, 23, 0xBEBFBC70 );
181 P( local.A, local.B, local.C, local.D, 13, 4, 0x289B7EC6 );
182 P( local.D, local.A, local.B, local.C, 0, 11, 0xEAA127FA );
183 P( local.C, local.D, local.A, local.B, 3, 16, 0xD4EF3085 );
184 P( local.B, local.C, local.D, local.A, 6, 23, 0x04881D05 );
185 P( local.A, local.B, local.C, local.D, 9, 4, 0xD9D4D039 );
186 P( local.D, local.A, local.B, local.C, 12, 11, 0xE6DB99E5 );
187 P( local.C, local.D, local.A, local.B, 15, 16, 0x1FA27CF8 );
188 P( local.B, local.C, local.D, local.A, 2, 23, 0xC4AC5665 );
189
190 #undef F
191
192 #define F(x,y,z) ((y) ^ ((x) | ~(z)))
193
194 P( local.A, local.B, local.C, local.D, 0, 6, 0xF4292244 );
195 P( local.D, local.A, local.B, local.C, 7, 10, 0x432AFF97 );
196 P( local.C, local.D, local.A, local.B, 14, 15, 0xAB9423A7 );
197 P( local.B, local.C, local.D, local.A, 5, 21, 0xFC93A039 );
198 P( local.A, local.B, local.C, local.D, 12, 6, 0x655B59C3 );
199 P( local.D, local.A, local.B, local.C, 3, 10, 0x8F0CCC92 );
200 P( local.C, local.D, local.A, local.B, 10, 15, 0xFFEFF47D );
201 P( local.B, local.C, local.D, local.A, 1, 21, 0x85845DD1 );
202 P( local.A, local.B, local.C, local.D, 8, 6, 0x6FA87E4F );
203 P( local.D, local.A, local.B, local.C, 15, 10, 0xFE2CE6E0 );
204 P( local.C, local.D, local.A, local.B, 6, 15, 0xA3014314 );
205 P( local.B, local.C, local.D, local.A, 13, 21, 0x4E0811A1 );
206 P( local.A, local.B, local.C, local.D, 4, 6, 0xF7537E82 );
207 P( local.D, local.A, local.B, local.C, 11, 10, 0xBD3AF235 );
208 P( local.C, local.D, local.A, local.B, 2, 15, 0x2AD7D2BB );
209 P( local.B, local.C, local.D, local.A, 9, 21, 0xEB86D391 );
210
211 #undef F
212
213 ctx->state[0] += local.A;
214 ctx->state[1] += local.B;
215 ctx->state[2] += local.C;
216 ctx->state[3] += local.D;
217
218 /* Zeroise variables to clear sensitive data from memory. */
219 mbedtls_platform_zeroize( &local, sizeof( local ) );
220
221 return( 0 );
222 }
223
224 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
mbedtls_md5_process(mbedtls_md5_context * ctx,const unsigned char data[64])225 void mbedtls_md5_process( mbedtls_md5_context *ctx,
226 const unsigned char data[64] )
227 {
228 mbedtls_internal_md5_process( ctx, data );
229 }
230 #endif
231 #endif /* !MBEDTLS_MD5_PROCESS_ALT */
232
233 /*
234 * MD5 process buffer
235 */
mbedtls_md5_update_ret(mbedtls_md5_context * ctx,const unsigned char * input,size_t ilen)236 int mbedtls_md5_update_ret( mbedtls_md5_context *ctx,
237 const unsigned char *input,
238 size_t ilen )
239 {
240 int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
241 size_t fill;
242 uint32_t left;
243
244 if( ilen == 0 )
245 return( 0 );
246
247 left = ctx->total[0] & 0x3F;
248 fill = 64 - left;
249
250 ctx->total[0] += (uint32_t) ilen;
251 ctx->total[0] &= 0xFFFFFFFF;
252
253 if( ctx->total[0] < (uint32_t) ilen )
254 ctx->total[1]++;
255
256 if( left && ilen >= fill )
257 {
258 memcpy( (void *) (ctx->buffer + left), input, fill );
259 if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
260 return( ret );
261
262 input += fill;
263 ilen -= fill;
264 left = 0;
265 }
266
267 while( ilen >= 64 )
268 {
269 if( ( ret = mbedtls_internal_md5_process( ctx, input ) ) != 0 )
270 return( ret );
271
272 input += 64;
273 ilen -= 64;
274 }
275
276 if( ilen > 0 )
277 {
278 memcpy( (void *) (ctx->buffer + left), input, ilen );
279 }
280
281 return( 0 );
282 }
283
284 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
mbedtls_md5_update(mbedtls_md5_context * ctx,const unsigned char * input,size_t ilen)285 void mbedtls_md5_update( mbedtls_md5_context *ctx,
286 const unsigned char *input,
287 size_t ilen )
288 {
289 mbedtls_md5_update_ret( ctx, input, ilen );
290 }
291 #endif
292
293 /*
294 * MD5 final digest
295 */
mbedtls_md5_finish_ret(mbedtls_md5_context * ctx,unsigned char output[16])296 int mbedtls_md5_finish_ret( mbedtls_md5_context *ctx,
297 unsigned char output[16] )
298 {
299 int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
300 uint32_t used;
301 uint32_t high, low;
302
303 /*
304 * Add padding: 0x80 then 0x00 until 8 bytes remain for the length
305 */
306 used = ctx->total[0] & 0x3F;
307
308 ctx->buffer[used++] = 0x80;
309
310 if( used <= 56 )
311 {
312 /* Enough room for padding + length in current block */
313 memset( ctx->buffer + used, 0, 56 - used );
314 }
315 else
316 {
317 /* We'll need an extra block */
318 memset( ctx->buffer + used, 0, 64 - used );
319
320 if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
321 return( ret );
322
323 memset( ctx->buffer, 0, 56 );
324 }
325
326 /*
327 * Add message length
328 */
329 high = ( ctx->total[0] >> 29 )
330 | ( ctx->total[1] << 3 );
331 low = ( ctx->total[0] << 3 );
332
333 MBEDTLS_PUT_UINT32_LE( low, ctx->buffer, 56 );
334 MBEDTLS_PUT_UINT32_LE( high, ctx->buffer, 60 );
335
336 if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
337 return( ret );
338
339 /*
340 * Output final state
341 */
342 MBEDTLS_PUT_UINT32_LE( ctx->state[0], output, 0 );
343 MBEDTLS_PUT_UINT32_LE( ctx->state[1], output, 4 );
344 MBEDTLS_PUT_UINT32_LE( ctx->state[2], output, 8 );
345 MBEDTLS_PUT_UINT32_LE( ctx->state[3], output, 12 );
346
347 return( 0 );
348 }
349
350 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
mbedtls_md5_finish(mbedtls_md5_context * ctx,unsigned char output[16])351 void mbedtls_md5_finish( mbedtls_md5_context *ctx,
352 unsigned char output[16] )
353 {
354 mbedtls_md5_finish_ret( ctx, output );
355 }
356 #endif
357
358 #endif /* !MBEDTLS_MD5_ALT */
359
360 /*
361 * output = MD5( input buffer )
362 */
mbedtls_md5_ret(const unsigned char * input,size_t ilen,unsigned char output[16])363 int mbedtls_md5_ret( const unsigned char *input,
364 size_t ilen,
365 unsigned char output[16] )
366 {
367 int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
368 mbedtls_md5_context ctx;
369
370 mbedtls_md5_init( &ctx );
371
372 if( ( ret = mbedtls_md5_starts_ret( &ctx ) ) != 0 )
373 goto exit;
374
375 if( ( ret = mbedtls_md5_update_ret( &ctx, input, ilen ) ) != 0 )
376 goto exit;
377
378 if( ( ret = mbedtls_md5_finish_ret( &ctx, output ) ) != 0 )
379 goto exit;
380
381 exit:
382 mbedtls_md5_free( &ctx );
383
384 return( ret );
385 }
386
387 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
mbedtls_md5(const unsigned char * input,size_t ilen,unsigned char output[16])388 void mbedtls_md5( const unsigned char *input,
389 size_t ilen,
390 unsigned char output[16] )
391 {
392 mbedtls_md5_ret( input, ilen, output );
393 }
394 #endif
395
396 #if defined(MBEDTLS_SELF_TEST)
397 /*
398 * RFC 1321 test vectors
399 */
400 static const unsigned char md5_test_buf[7][81] =
401 {
402 { "" },
403 { "a" },
404 { "abc" },
405 { "message digest" },
406 { "abcdefghijklmnopqrstuvwxyz" },
407 { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
408 { "12345678901234567890123456789012345678901234567890123456789012345678901234567890" }
409 };
410
411 static const size_t md5_test_buflen[7] =
412 {
413 0, 1, 3, 14, 26, 62, 80
414 };
415
416 static const unsigned char md5_test_sum[7][16] =
417 {
418 { 0xD4, 0x1D, 0x8C, 0xD9, 0x8F, 0x00, 0xB2, 0x04,
419 0xE9, 0x80, 0x09, 0x98, 0xEC, 0xF8, 0x42, 0x7E },
420 { 0x0C, 0xC1, 0x75, 0xB9, 0xC0, 0xF1, 0xB6, 0xA8,
421 0x31, 0xC3, 0x99, 0xE2, 0x69, 0x77, 0x26, 0x61 },
422 { 0x90, 0x01, 0x50, 0x98, 0x3C, 0xD2, 0x4F, 0xB0,
423 0xD6, 0x96, 0x3F, 0x7D, 0x28, 0xE1, 0x7F, 0x72 },
424 { 0xF9, 0x6B, 0x69, 0x7D, 0x7C, 0xB7, 0x93, 0x8D,
425 0x52, 0x5A, 0x2F, 0x31, 0xAA, 0xF1, 0x61, 0xD0 },
426 { 0xC3, 0xFC, 0xD3, 0xD7, 0x61, 0x92, 0xE4, 0x00,
427 0x7D, 0xFB, 0x49, 0x6C, 0xCA, 0x67, 0xE1, 0x3B },
428 { 0xD1, 0x74, 0xAB, 0x98, 0xD2, 0x77, 0xD9, 0xF5,
429 0xA5, 0x61, 0x1C, 0x2C, 0x9F, 0x41, 0x9D, 0x9F },
430 { 0x57, 0xED, 0xF4, 0xA2, 0x2B, 0xE3, 0xC9, 0x55,
431 0xAC, 0x49, 0xDA, 0x2E, 0x21, 0x07, 0xB6, 0x7A }
432 };
433
434 /*
435 * Checkup routine
436 */
mbedtls_md5_self_test(int verbose)437 int mbedtls_md5_self_test( int verbose )
438 {
439 int i, ret = 0;
440 unsigned char md5sum[16];
441
442 for( i = 0; i < 7; i++ )
443 {
444 if( verbose != 0 )
445 mbedtls_printf( " MD5 test #%d: ", i + 1 );
446
447 ret = mbedtls_md5_ret( md5_test_buf[i], md5_test_buflen[i], md5sum );
448 if( ret != 0 )
449 goto fail;
450
451 if( memcmp( md5sum, md5_test_sum[i], 16 ) != 0 )
452 {
453 ret = 1;
454 goto fail;
455 }
456
457 if( verbose != 0 )
458 mbedtls_printf( "passed\n" );
459 }
460
461 if( verbose != 0 )
462 mbedtls_printf( "\n" );
463
464 return( 0 );
465
466 fail:
467 if( verbose != 0 )
468 mbedtls_printf( "failed\n" );
469
470 return( ret );
471 }
472
473 #endif /* MBEDTLS_SELF_TEST */
474
475 #endif /* MBEDTLS_MD5_C */
476