md5.c 13 KB

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