1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel (at) haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at http://curl.haxx.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 ***************************************************************************/ 22 23 #include "curl_setup.h" 24 25 #ifndef CURL_DISABLE_CRYPTO_AUTH 26 27 #include "curl_md5.h" 28 #include "curl_hmac.h" 29 #include "warnless.h" 30 31 #if defined(USE_GNUTLS_NETTLE) 32 33 #include <nettle/md5.h> 34 #include "curl_memory.h" 35 /* The last #include file should be: */ 36 #include "memdebug.h" 37 38 typedef struct md5_ctx MD5_CTX; 39 40 static void MD5_Init(MD5_CTX * ctx) 41 { 42 md5_init(ctx); 43 } 44 45 static void MD5_Update(MD5_CTX * ctx, 46 const unsigned char * input, 47 unsigned int inputLen) 48 { 49 md5_update(ctx, inputLen, input); 50 } 51 52 static void MD5_Final(unsigned char digest[16], MD5_CTX * ctx) 53 { 54 md5_digest(ctx, 16, digest); 55 } 56 57 #elif defined(USE_GNUTLS) 58 59 #include <gcrypt.h> 60 #include "curl_memory.h" 61 /* The last #include file should be: */ 62 #include "memdebug.h" 63 64 typedef gcry_md_hd_t MD5_CTX; 65 66 static void MD5_Init(MD5_CTX * ctx) 67 { 68 gcry_md_open(ctx, GCRY_MD_MD5, 0); 69 } 70 71 static void MD5_Update(MD5_CTX * ctx, 72 const unsigned char * input, 73 unsigned int inputLen) 74 { 75 gcry_md_write(*ctx, input, inputLen); 76 } 77 78 static void MD5_Final(unsigned char digest[16], MD5_CTX * ctx) 79 { 80 memcpy(digest, gcry_md_read(*ctx, 0), 16); 81 gcry_md_close(*ctx); 82 } 83 84 #elif defined(USE_OPENSSL) 85 /* When OpenSSL is available we use the MD5-function from OpenSSL */ 86 #include <openssl/md5.h> 87 #include "curl_memory.h" 88 /* The last #include file should be: */ 89 #include "memdebug.h" 90 91 #elif (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && \ 92 (__MAC_OS_X_VERSION_MAX_ALLOWED >= 1040)) || \ 93 (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && \ 94 (__IPHONE_OS_VERSION_MAX_ALLOWED >= 20000)) 95 96 /* For Apple operating systems: CommonCrypto has the functions we need. 97 These functions are available on Tiger and later, as well as iOS 2.0 98 and later. If you're building for an older cat, well, sorry. 99 100 Declaring the functions as static like this seems to be a bit more 101 reliable than defining COMMON_DIGEST_FOR_OPENSSL on older cats. */ 102 # include <CommonCrypto/CommonDigest.h> 103 # define MD5_CTX CC_MD5_CTX 104 #include "curl_memory.h" 105 /* The last #include file should be: */ 106 #include "memdebug.h" 107 108 static void MD5_Init(MD5_CTX *ctx) 109 { 110 CC_MD5_Init(ctx); 111 } 112 113 static void MD5_Update(MD5_CTX *ctx, 114 const unsigned char *input, 115 unsigned int inputLen) 116 { 117 CC_MD5_Update(ctx, input, inputLen); 118 } 119 120 static void MD5_Final(unsigned char digest[16], MD5_CTX *ctx) 121 { 122 CC_MD5_Final(digest, ctx); 123 } 124 125 #elif defined(_WIN32) 126 127 #include <wincrypt.h> 128 #include "curl_memory.h" 129 /* The last #include file should be: */ 130 #include "memdebug.h" 131 132 typedef struct { 133 HCRYPTPROV hCryptProv; 134 HCRYPTHASH hHash; 135 } MD5_CTX; 136 137 static void MD5_Init(MD5_CTX *ctx) 138 { 139 if(CryptAcquireContext(&ctx->hCryptProv, NULL, NULL, 140 PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) { 141 CryptCreateHash(ctx->hCryptProv, CALG_MD5, 0, 0, &ctx->hHash); 142 } 143 } 144 145 static void MD5_Update(MD5_CTX *ctx, 146 const unsigned char *input, 147 unsigned int inputLen) 148 { 149 CryptHashData(ctx->hHash, (unsigned char *)input, inputLen, 0); 150 } 151 152 static void MD5_Final(unsigned char digest[16], MD5_CTX *ctx) 153 { 154 unsigned long length = 0; 155 CryptGetHashParam(ctx->hHash, HP_HASHVAL, NULL, &length, 0); 156 if(length == 16) 157 CryptGetHashParam(ctx->hHash, HP_HASHVAL, digest, &length, 0); 158 if(ctx->hHash) 159 CryptDestroyHash(ctx->hHash); 160 if(ctx->hCryptProv) 161 CryptReleaseContext(ctx->hCryptProv, 0); 162 } 163 164 #elif defined(USE_AXTLS) 165 #include <axTLS/config.h> 166 #include <axTLS/os_int.h> 167 #include <axTLS/crypto.h> 168 #include "curl_memory.h" 169 /* The last #include file should be: */ 170 #include "memdebug.h" 171 #else 172 /* When no other crypto library is available we use this code segment */ 173 /* 174 * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc. 175 * MD5 Message-Digest Algorithm (RFC 1321). 176 * 177 * Homepage: 178 http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5 179 * 180 * Author: 181 * Alexander Peslyak, better known as Solar Designer <solar at openwall.com> 182 * 183 * This software was written by Alexander Peslyak in 2001. No copyright is 184 * claimed, and the software is hereby placed in the public domain. 185 * In case this attempt to disclaim copyright and place the software in the 186 * public domain is deemed null and void, then the software is 187 * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the 188 * general public under the following terms: 189 * 190 * Redistribution and use in source and binary forms, with or without 191 * modification, are permitted. 192 * 193 * There's ABSOLUTELY NO WARRANTY, express or implied. 194 * 195 * (This is a heavily cut-down "BSD license".) 196 * 197 * This differs from Colin Plumb's older public domain implementation in that 198 * no exactly 32-bit integer data type is required (any 32-bit or wider 199 * unsigned integer data type will do), there's no compile-time endianness 200 * configuration, and the function prototypes match OpenSSL's. No code from 201 * Colin Plumb's implementation has been reused; this comment merely compares 202 * the properties of the two independent implementations. 203 * 204 * The primary goals of this implementation are portability and ease of use. 205 * It is meant to be fast, but not as fast as possible. Some known 206 * optimizations are not included to reduce source code size and avoid 207 * compile-time configuration. 208 */ 209 210 #include <string.h> 211 212 /* The last #include files should be: */ 213 #include "curl_memory.h" 214 #include "memdebug.h" 215 216 /* Any 32-bit or wider unsigned integer data type will do */ 217 typedef unsigned int MD5_u32plus; 218 219 typedef struct { 220 MD5_u32plus lo, hi; 221 MD5_u32plus a, b, c, d; 222 unsigned char buffer[64]; 223 MD5_u32plus block[16]; 224 } MD5_CTX; 225 226 static void MD5_Init(MD5_CTX *ctx); 227 static void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size); 228 static void MD5_Final(unsigned char *result, MD5_CTX *ctx); 229 230 /* 231 * The basic MD5 functions. 232 * 233 * F and G are optimized compared to their RFC 1321 definitions for 234 * architectures that lack an AND-NOT instruction, just like in Colin Plumb's 235 * implementation. 236 */ 237 #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) 238 #define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y)))) 239 #define H(x, y, z) (((x) ^ (y)) ^ (z)) 240 #define H2(x, y, z) ((x) ^ ((y) ^ (z))) 241 #define I(x, y, z) ((y) ^ ((x) | ~(z))) 242 243 /* 244 * The MD5 transformation for all four rounds. 245 */ 246 #define STEP(f, a, b, c, d, x, t, s) \ 247 (a) += f((b), (c), (d)) + (x) + (t); \ 248 (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \ 249 (a) += (b); 250 251 /* 252 * SET reads 4 input bytes in little-endian byte order and stores them 253 * in a properly aligned word in host byte order. 254 * 255 * The check for little-endian architectures that tolerate unaligned 256 * memory accesses is just an optimization. Nothing will break if it 257 * doesn't work. 258 */ 259 #if defined(__i386__) || defined(__x86_64__) || defined(__vax__) 260 #define SET(n) \ 261 (*(MD5_u32plus *)&ptr[(n) * 4]) 262 #define GET(n) \ 263 SET(n) 264 #else 265 #define SET(n) \ 266 (ctx->block[(n)] = \ 267 (MD5_u32plus)ptr[(n) * 4] | \ 268 ((MD5_u32plus)ptr[(n) * 4 + 1] << 8) | \ 269 ((MD5_u32plus)ptr[(n) * 4 + 2] << 16) | \ 270 ((MD5_u32plus)ptr[(n) * 4 + 3] << 24)) 271 #define GET(n) \ 272 (ctx->block[(n)]) 273 #endif 274 275 /* 276 * This processes one or more 64-byte data blocks, but does NOT update 277 * the bit counters. There are no alignment requirements. 278 */ 279 static const void *body(MD5_CTX *ctx, const void *data, unsigned long size) 280 { 281 const unsigned char *ptr; 282 MD5_u32plus a, b, c, d; 283 MD5_u32plus saved_a, saved_b, saved_c, saved_d; 284 285 ptr = (const unsigned char *)data; 286 287 a = ctx->a; 288 b = ctx->b; 289 c = ctx->c; 290 d = ctx->d; 291 292 do { 293 saved_a = a; 294 saved_b = b; 295 saved_c = c; 296 saved_d = d; 297 298 /* Round 1 */ 299 STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7) 300 STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12) 301 STEP(F, c, d, a, b, SET(2), 0x242070db, 17) 302 STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22) 303 STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7) 304 STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12) 305 STEP(F, c, d, a, b, SET(6), 0xa8304613, 17) 306 STEP(F, b, c, d, a, SET(7), 0xfd469501, 22) 307 STEP(F, a, b, c, d, SET(8), 0x698098d8, 7) 308 STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12) 309 STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17) 310 STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22) 311 STEP(F, a, b, c, d, SET(12), 0x6b901122, 7) 312 STEP(F, d, a, b, c, SET(13), 0xfd987193, 12) 313 STEP(F, c, d, a, b, SET(14), 0xa679438e, 17) 314 STEP(F, b, c, d, a, SET(15), 0x49b40821, 22) 315 316 /* Round 2 */ 317 STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5) 318 STEP(G, d, a, b, c, GET(6), 0xc040b340, 9) 319 STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14) 320 STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20) 321 STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5) 322 STEP(G, d, a, b, c, GET(10), 0x02441453, 9) 323 STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14) 324 STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20) 325 STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5) 326 STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9) 327 STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14) 328 STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20) 329 STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5) 330 STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9) 331 STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14) 332 STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20) 333 334 /* Round 3 */ 335 STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4) 336 STEP(H2, d, a, b, c, GET(8), 0x8771f681, 11) 337 STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16) 338 STEP(H2, b, c, d, a, GET(14), 0xfde5380c, 23) 339 STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4) 340 STEP(H2, d, a, b, c, GET(4), 0x4bdecfa9, 11) 341 STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16) 342 STEP(H2, b, c, d, a, GET(10), 0xbebfbc70, 23) 343 STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4) 344 STEP(H2, d, a, b, c, GET(0), 0xeaa127fa, 11) 345 STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16) 346 STEP(H2, b, c, d, a, GET(6), 0x04881d05, 23) 347 STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4) 348 STEP(H2, d, a, b, c, GET(12), 0xe6db99e5, 11) 349 STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16) 350 STEP(H2, b, c, d, a, GET(2), 0xc4ac5665, 23) 351 352 /* Round 4 */ 353 STEP(I, a, b, c, d, GET(0), 0xf4292244, 6) 354 STEP(I, d, a, b, c, GET(7), 0x432aff97, 10) 355 STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15) 356 STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21) 357 STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6) 358 STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10) 359 STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15) 360 STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21) 361 STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6) 362 STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10) 363 STEP(I, c, d, a, b, GET(6), 0xa3014314, 15) 364 STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21) 365 STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6) 366 STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10) 367 STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15) 368 STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21) 369 370 a += saved_a; 371 b += saved_b; 372 c += saved_c; 373 d += saved_d; 374 375 ptr += 64; 376 } while(size -= 64); 377 378 ctx->a = a; 379 ctx->b = b; 380 ctx->c = c; 381 ctx->d = d; 382 383 return ptr; 384 } 385 386 static void MD5_Init(MD5_CTX *ctx) 387 { 388 ctx->a = 0x67452301; 389 ctx->b = 0xefcdab89; 390 ctx->c = 0x98badcfe; 391 ctx->d = 0x10325476; 392 393 ctx->lo = 0; 394 ctx->hi = 0; 395 } 396 397 static void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size) 398 { 399 MD5_u32plus saved_lo; 400 unsigned long used, available; 401 402 saved_lo = ctx->lo; 403 if((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo) 404 ctx->hi++; 405 ctx->hi += (MD5_u32plus)size >> 29; 406 407 used = saved_lo & 0x3f; 408 409 if(used) { 410 available = 64 - used; 411 412 if(size < available) { 413 memcpy(&ctx->buffer[used], data, size); 414 return; 415 } 416 417 memcpy(&ctx->buffer[used], data, available); 418 data = (const unsigned char *)data + available; 419 size -= available; 420 body(ctx, ctx->buffer, 64); 421 } 422 423 if(size >= 64) { 424 data = body(ctx, data, size & ~(unsigned long)0x3f); 425 size &= 0x3f; 426 } 427 428 memcpy(ctx->buffer, data, size); 429 } 430 431 static void MD5_Final(unsigned char *result, MD5_CTX *ctx) 432 { 433 unsigned long used, available; 434 435 used = ctx->lo & 0x3f; 436 437 ctx->buffer[used++] = 0x80; 438 439 available = 64 - used; 440 441 if(available < 8) { 442 memset(&ctx->buffer[used], 0, available); 443 body(ctx, ctx->buffer, 64); 444 used = 0; 445 available = 64; 446 } 447 448 memset(&ctx->buffer[used], 0, available - 8); 449 450 ctx->lo <<= 3; 451 ctx->buffer[56] = curlx_ultouc((ctx->lo)&0xff); 452 ctx->buffer[57] = curlx_ultouc((ctx->lo >> 8)&0xff); 453 ctx->buffer[58] = curlx_ultouc((ctx->lo >> 16)&0xff); 454 ctx->buffer[59] = curlx_ultouc(ctx->lo >> 24); 455 ctx->buffer[60] = curlx_ultouc((ctx->hi)&0xff); 456 ctx->buffer[61] = curlx_ultouc((ctx->hi >> 8)&0xff); 457 ctx->buffer[62] = curlx_ultouc((ctx->hi >> 16)&0xff); 458 ctx->buffer[63] = curlx_ultouc(ctx->hi >> 24); 459 460 body(ctx, ctx->buffer, 64); 461 462 result[0] = curlx_ultouc((ctx->a)&0xff); 463 result[1] = curlx_ultouc((ctx->a >> 8)&0xff); 464 result[2] = curlx_ultouc((ctx->a >> 16)&0xff); 465 result[3] = curlx_ultouc(ctx->a >> 24); 466 result[4] = curlx_ultouc((ctx->b)&0xff); 467 result[5] = curlx_ultouc((ctx->b >> 8)&0xff); 468 result[6] = curlx_ultouc((ctx->b >> 16)&0xff); 469 result[7] = curlx_ultouc(ctx->b >> 24); 470 result[8] = curlx_ultouc((ctx->c)&0xff); 471 result[9] = curlx_ultouc((ctx->c >> 8)&0xff); 472 result[10] = curlx_ultouc((ctx->c >> 16)&0xff); 473 result[11] = curlx_ultouc(ctx->c >> 24); 474 result[12] = curlx_ultouc((ctx->d)&0xff); 475 result[13] = curlx_ultouc((ctx->d >> 8)&0xff); 476 result[14] = curlx_ultouc((ctx->d >> 16)&0xff); 477 result[15] = curlx_ultouc(ctx->d >> 24); 478 479 memset(ctx, 0, sizeof(*ctx)); 480 } 481 482 #endif /* CRYPTO LIBS */ 483 484 const HMAC_params Curl_HMAC_MD5[] = { 485 { 486 (HMAC_hinit_func) MD5_Init, /* Hash initialization function. */ 487 (HMAC_hupdate_func) MD5_Update, /* Hash update function. */ 488 (HMAC_hfinal_func) MD5_Final, /* Hash computation end function. */ 489 sizeof(MD5_CTX), /* Size of hash context structure. */ 490 64, /* Maximum key length. */ 491 16 /* Result size. */ 492 } 493 }; 494 495 const MD5_params Curl_DIGEST_MD5[] = { 496 { 497 (Curl_MD5_init_func) MD5_Init, /* Digest initialization function */ 498 (Curl_MD5_update_func) MD5_Update, /* Digest update function */ 499 (Curl_MD5_final_func) MD5_Final, /* Digest computation end function */ 500 sizeof(MD5_CTX), /* Size of digest context struct */ 501 16 /* Result size */ 502 } 503 }; 504 505 /* 506 * @unittest: 1601 507 */ 508 void Curl_md5it(unsigned char *outbuffer, /* 16 bytes */ 509 const unsigned char *input) 510 { 511 MD5_CTX ctx; 512 MD5_Init(&ctx); 513 MD5_Update(&ctx, input, curlx_uztoui(strlen((char *)input))); 514 MD5_Final(outbuffer, &ctx); 515 } 516 517 MD5_context *Curl_MD5_init(const MD5_params *md5params) 518 { 519 MD5_context *ctxt; 520 521 /* Create MD5 context */ 522 ctxt = malloc(sizeof *ctxt); 523 524 if(!ctxt) 525 return ctxt; 526 527 ctxt->md5_hashctx = malloc(md5params->md5_ctxtsize); 528 529 if(!ctxt->md5_hashctx) { 530 free(ctxt); 531 return NULL; 532 } 533 534 ctxt->md5_hash = md5params; 535 536 (*md5params->md5_init_func)(ctxt->md5_hashctx); 537 538 return ctxt; 539 } 540 541 int Curl_MD5_update(MD5_context *context, 542 const unsigned char *data, 543 unsigned int len) 544 { 545 (*context->md5_hash->md5_update_func)(context->md5_hashctx, data, len); 546 547 return 0; 548 } 549 550 int Curl_MD5_final(MD5_context *context, unsigned char *result) 551 { 552 (*context->md5_hash->md5_final_func)(result, context->md5_hashctx); 553 554 free(context->md5_hashctx); 555 free(context); 556 557 return 0; 558 } 559 560 #endif /* CURL_DISABLE_CRYPTO_AUTH */ 561
