Annotation of embedaddon/curl/lib/md4.c, revision 1.1
1.1 ! misho 1: /***************************************************************************
! 2: * _ _ ____ _
! 3: * Project ___| | | | _ \| |
! 4: * / __| | | | |_) | |
! 5: * | (__| |_| | _ <| |___
! 6: * \___|\___/|_| \_\_____|
! 7: *
! 8: * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@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 https://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: #if !defined(CURL_DISABLE_CRYPTO_AUTH)
! 26:
! 27: #include "curl_md4.h"
! 28: #include "warnless.h"
! 29:
! 30: #ifdef USE_OPENSSL
! 31: #include <openssl/opensslconf.h>
! 32: #if defined(OPENSSL_VERSION_MAJOR) && (OPENSSL_VERSION_MAJOR >= 3)
! 33: /* OpenSSL 3.0.0 marks the MD4 functions as deprecated */
! 34: #define OPENSSL_NO_MD4
! 35: #endif
! 36: #endif /* USE_OPENSSL */
! 37:
! 38: #ifdef USE_MBEDTLS
! 39: #include <mbedtls/config.h>
! 40: #include <mbedtls/version.h>
! 41:
! 42: #if(MBEDTLS_VERSION_NUMBER >= 0x02070000)
! 43: #define HAS_MBEDTLS_RESULT_CODE_BASED_FUNCTIONS
! 44: #endif
! 45: #endif /* USE_MBEDTLS */
! 46:
! 47: #if defined(USE_GNUTLS_NETTLE)
! 48:
! 49: #include <nettle/md4.h>
! 50:
! 51: #include "curl_memory.h"
! 52:
! 53: /* The last #include file should be: */
! 54: #include "memdebug.h"
! 55:
! 56: typedef struct md4_ctx MD4_CTX;
! 57:
! 58: static void MD4_Init(MD4_CTX *ctx)
! 59: {
! 60: md4_init(ctx);
! 61: }
! 62:
! 63: static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
! 64: {
! 65: md4_update(ctx, size, data);
! 66: }
! 67:
! 68: static void MD4_Final(unsigned char *result, MD4_CTX *ctx)
! 69: {
! 70: md4_digest(ctx, MD4_DIGEST_SIZE, result);
! 71: }
! 72:
! 73: #elif defined(USE_GNUTLS)
! 74:
! 75: #include <gcrypt.h>
! 76:
! 77: #include "curl_memory.h"
! 78:
! 79: /* The last #include file should be: */
! 80: #include "memdebug.h"
! 81:
! 82: typedef gcry_md_hd_t MD4_CTX;
! 83:
! 84: static void MD4_Init(MD4_CTX *ctx)
! 85: {
! 86: gcry_md_open(ctx, GCRY_MD_MD4, 0);
! 87: }
! 88:
! 89: static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
! 90: {
! 91: gcry_md_write(*ctx, data, size);
! 92: }
! 93:
! 94: static void MD4_Final(unsigned char *result, MD4_CTX *ctx)
! 95: {
! 96: memcpy(result, gcry_md_read(*ctx, 0), MD4_DIGEST_LENGTH);
! 97: gcry_md_close(*ctx);
! 98: }
! 99:
! 100: #elif defined(USE_OPENSSL) && !defined(OPENSSL_NO_MD4)
! 101: /* When OpenSSL is available we use the MD4-functions from OpenSSL */
! 102: #include <openssl/md4.h>
! 103:
! 104: #elif (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && \
! 105: (__MAC_OS_X_VERSION_MAX_ALLOWED >= 1040)) || \
! 106: (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && \
! 107: (__IPHONE_OS_VERSION_MAX_ALLOWED >= 20000))
! 108:
! 109: #include <CommonCrypto/CommonDigest.h>
! 110:
! 111: #include "curl_memory.h"
! 112:
! 113: /* The last #include file should be: */
! 114: #include "memdebug.h"
! 115:
! 116: typedef CC_MD4_CTX MD4_CTX;
! 117:
! 118: static void MD4_Init(MD4_CTX *ctx)
! 119: {
! 120: (void)CC_MD4_Init(ctx);
! 121: }
! 122:
! 123: static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
! 124: {
! 125: (void)CC_MD4_Update(ctx, data, (CC_LONG)size);
! 126: }
! 127:
! 128: static void MD4_Final(unsigned char *result, MD4_CTX *ctx)
! 129: {
! 130: (void)CC_MD4_Final(result, ctx);
! 131: }
! 132:
! 133: #elif defined(USE_WIN32_CRYPTO)
! 134:
! 135: #include <wincrypt.h>
! 136:
! 137: #include "curl_memory.h"
! 138:
! 139: /* The last #include file should be: */
! 140: #include "memdebug.h"
! 141:
! 142: typedef struct {
! 143: HCRYPTPROV hCryptProv;
! 144: HCRYPTHASH hHash;
! 145: } MD4_CTX;
! 146:
! 147: static void MD4_Init(MD4_CTX *ctx)
! 148: {
! 149: ctx->hCryptProv = 0;
! 150: ctx->hHash = 0;
! 151:
! 152: if(CryptAcquireContext(&ctx->hCryptProv, NULL, NULL, PROV_RSA_FULL,
! 153: CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) {
! 154: CryptCreateHash(ctx->hCryptProv, CALG_MD4, 0, 0, &ctx->hHash);
! 155: }
! 156: }
! 157:
! 158: static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
! 159: {
! 160: CryptHashData(ctx->hHash, (BYTE *)data, (unsigned int) size, 0);
! 161: }
! 162:
! 163: static void MD4_Final(unsigned char *result, MD4_CTX *ctx)
! 164: {
! 165: unsigned long length = 0;
! 166:
! 167: CryptGetHashParam(ctx->hHash, HP_HASHVAL, NULL, &length, 0);
! 168: if(length == MD4_DIGEST_LENGTH)
! 169: CryptGetHashParam(ctx->hHash, HP_HASHVAL, result, &length, 0);
! 170:
! 171: if(ctx->hHash)
! 172: CryptDestroyHash(ctx->hHash);
! 173:
! 174: if(ctx->hCryptProv)
! 175: CryptReleaseContext(ctx->hCryptProv, 0);
! 176: }
! 177:
! 178: #elif(defined(USE_MBEDTLS) && defined(MBEDTLS_MD4_C))
! 179:
! 180: #include <mbedtls/md4.h>
! 181:
! 182: #include "curl_memory.h"
! 183:
! 184: /* The last #include file should be: */
! 185: #include "memdebug.h"
! 186:
! 187: typedef struct {
! 188: void *data;
! 189: unsigned long size;
! 190: } MD4_CTX;
! 191:
! 192: static void MD4_Init(MD4_CTX *ctx)
! 193: {
! 194: ctx->data = NULL;
! 195: ctx->size = 0;
! 196: }
! 197:
! 198: static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
! 199: {
! 200: if(ctx->data == NULL) {
! 201: ctx->data = malloc(size);
! 202: if(ctx->data != NULL) {
! 203: memcpy(ctx->data, data, size);
! 204: ctx->size = size;
! 205: }
! 206: }
! 207: }
! 208:
! 209: static void MD4_Final(unsigned char *result, MD4_CTX *ctx)
! 210: {
! 211: if(ctx->data != NULL) {
! 212: #if !defined(HAS_MBEDTLS_RESULT_CODE_BASED_FUNCTIONS)
! 213: mbedtls_md4(ctx->data, ctx->size, result);
! 214: #else
! 215: (void) mbedtls_md4_ret(ctx->data, ctx->size, result);
! 216: #endif
! 217:
! 218: Curl_safefree(ctx->data);
! 219: ctx->size = 0;
! 220: }
! 221: }
! 222:
! 223: #else
! 224: /* When no other crypto library is available, or the crypto library doesn't
! 225: * support MD4, we use this code segment this implementation of it
! 226: *
! 227: * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
! 228: * MD4 Message-Digest Algorithm (RFC 1320).
! 229: *
! 230: * Homepage:
! 231: https://openwall.info/wiki/people/solar/software/public-domain-source-code/md4
! 232: *
! 233: * Author:
! 234: * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
! 235: *
! 236: * This software was written by Alexander Peslyak in 2001. No copyright is
! 237: * claimed, and the software is hereby placed in the public domain. In case
! 238: * this attempt to disclaim copyright and place the software in the public
! 239: * domain is deemed null and void, then the software is Copyright (c) 2001
! 240: * Alexander Peslyak and it is hereby released to the general public under the
! 241: * following terms:
! 242: *
! 243: * Redistribution and use in source and binary forms, with or without
! 244: * modification, are permitted.
! 245: *
! 246: * There's ABSOLUTELY NO WARRANTY, express or implied.
! 247: *
! 248: * (This is a heavily cut-down "BSD license".)
! 249: *
! 250: * This differs from Colin Plumb's older public domain implementation in that
! 251: * no exactly 32-bit integer data type is required (any 32-bit or wider
! 252: * unsigned integer data type will do), there's no compile-time endianness
! 253: * configuration, and the function prototypes match OpenSSL's. No code from
! 254: * Colin Plumb's implementation has been reused; this comment merely compares
! 255: * the properties of the two independent implementations.
! 256: *
! 257: * The primary goals of this implementation are portability and ease of use.
! 258: * It is meant to be fast, but not as fast as possible. Some known
! 259: * optimizations are not included to reduce source code size and avoid
! 260: * compile-time configuration.
! 261: */
! 262:
! 263:
! 264: #include <string.h>
! 265:
! 266: /* Any 32-bit or wider unsigned integer data type will do */
! 267: typedef unsigned int MD4_u32plus;
! 268:
! 269: typedef struct {
! 270: MD4_u32plus lo, hi;
! 271: MD4_u32plus a, b, c, d;
! 272: unsigned char buffer[64];
! 273: MD4_u32plus block[16];
! 274: } MD4_CTX;
! 275:
! 276: static void MD4_Init(MD4_CTX *ctx);
! 277: static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size);
! 278: static void MD4_Final(unsigned char *result, MD4_CTX *ctx);
! 279:
! 280: /*
! 281: * The basic MD4 functions.
! 282: *
! 283: * F and G are optimized compared to their RFC 1320 definitions, with the
! 284: * optimization for F borrowed from Colin Plumb's MD5 implementation.
! 285: */
! 286: #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
! 287: #define G(x, y, z) (((x) & ((y) | (z))) | ((y) & (z)))
! 288: #define H(x, y, z) ((x) ^ (y) ^ (z))
! 289:
! 290: /*
! 291: * The MD4 transformation for all three rounds.
! 292: */
! 293: #define STEP(f, a, b, c, d, x, s) \
! 294: (a) += f((b), (c), (d)) + (x); \
! 295: (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s))));
! 296:
! 297: /*
! 298: * SET reads 4 input bytes in little-endian byte order and stores them
! 299: * in a properly aligned word in host byte order.
! 300: *
! 301: * The check for little-endian architectures that tolerate unaligned
! 302: * memory accesses is just an optimization. Nothing will break if it
! 303: * doesn't work.
! 304: */
! 305: #if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
! 306: #define SET(n) \
! 307: (*(MD4_u32plus *)(void *)&ptr[(n) * 4])
! 308: #define GET(n) \
! 309: SET(n)
! 310: #else
! 311: #define SET(n) \
! 312: (ctx->block[(n)] = \
! 313: (MD4_u32plus)ptr[(n) * 4] | \
! 314: ((MD4_u32plus)ptr[(n) * 4 + 1] << 8) | \
! 315: ((MD4_u32plus)ptr[(n) * 4 + 2] << 16) | \
! 316: ((MD4_u32plus)ptr[(n) * 4 + 3] << 24))
! 317: #define GET(n) \
! 318: (ctx->block[(n)])
! 319: #endif
! 320:
! 321: /*
! 322: * This processes one or more 64-byte data blocks, but does NOT update
! 323: * the bit counters. There are no alignment requirements.
! 324: */
! 325: static const void *body(MD4_CTX *ctx, const void *data, unsigned long size)
! 326: {
! 327: const unsigned char *ptr;
! 328: MD4_u32plus a, b, c, d;
! 329:
! 330: ptr = (const unsigned char *)data;
! 331:
! 332: a = ctx->a;
! 333: b = ctx->b;
! 334: c = ctx->c;
! 335: d = ctx->d;
! 336:
! 337: do {
! 338: MD4_u32plus saved_a, saved_b, saved_c, saved_d;
! 339:
! 340: saved_a = a;
! 341: saved_b = b;
! 342: saved_c = c;
! 343: saved_d = d;
! 344:
! 345: /* Round 1 */
! 346: STEP(F, a, b, c, d, SET(0), 3)
! 347: STEP(F, d, a, b, c, SET(1), 7)
! 348: STEP(F, c, d, a, b, SET(2), 11)
! 349: STEP(F, b, c, d, a, SET(3), 19)
! 350: STEP(F, a, b, c, d, SET(4), 3)
! 351: STEP(F, d, a, b, c, SET(5), 7)
! 352: STEP(F, c, d, a, b, SET(6), 11)
! 353: STEP(F, b, c, d, a, SET(7), 19)
! 354: STEP(F, a, b, c, d, SET(8), 3)
! 355: STEP(F, d, a, b, c, SET(9), 7)
! 356: STEP(F, c, d, a, b, SET(10), 11)
! 357: STEP(F, b, c, d, a, SET(11), 19)
! 358: STEP(F, a, b, c, d, SET(12), 3)
! 359: STEP(F, d, a, b, c, SET(13), 7)
! 360: STEP(F, c, d, a, b, SET(14), 11)
! 361: STEP(F, b, c, d, a, SET(15), 19)
! 362:
! 363: /* Round 2 */
! 364: STEP(G, a, b, c, d, GET(0) + 0x5a827999, 3)
! 365: STEP(G, d, a, b, c, GET(4) + 0x5a827999, 5)
! 366: STEP(G, c, d, a, b, GET(8) + 0x5a827999, 9)
! 367: STEP(G, b, c, d, a, GET(12) + 0x5a827999, 13)
! 368: STEP(G, a, b, c, d, GET(1) + 0x5a827999, 3)
! 369: STEP(G, d, a, b, c, GET(5) + 0x5a827999, 5)
! 370: STEP(G, c, d, a, b, GET(9) + 0x5a827999, 9)
! 371: STEP(G, b, c, d, a, GET(13) + 0x5a827999, 13)
! 372: STEP(G, a, b, c, d, GET(2) + 0x5a827999, 3)
! 373: STEP(G, d, a, b, c, GET(6) + 0x5a827999, 5)
! 374: STEP(G, c, d, a, b, GET(10) + 0x5a827999, 9)
! 375: STEP(G, b, c, d, a, GET(14) + 0x5a827999, 13)
! 376: STEP(G, a, b, c, d, GET(3) + 0x5a827999, 3)
! 377: STEP(G, d, a, b, c, GET(7) + 0x5a827999, 5)
! 378: STEP(G, c, d, a, b, GET(11) + 0x5a827999, 9)
! 379: STEP(G, b, c, d, a, GET(15) + 0x5a827999, 13)
! 380:
! 381: /* Round 3 */
! 382: STEP(H, a, b, c, d, GET(0) + 0x6ed9eba1, 3)
! 383: STEP(H, d, a, b, c, GET(8) + 0x6ed9eba1, 9)
! 384: STEP(H, c, d, a, b, GET(4) + 0x6ed9eba1, 11)
! 385: STEP(H, b, c, d, a, GET(12) + 0x6ed9eba1, 15)
! 386: STEP(H, a, b, c, d, GET(2) + 0x6ed9eba1, 3)
! 387: STEP(H, d, a, b, c, GET(10) + 0x6ed9eba1, 9)
! 388: STEP(H, c, d, a, b, GET(6) + 0x6ed9eba1, 11)
! 389: STEP(H, b, c, d, a, GET(14) + 0x6ed9eba1, 15)
! 390: STEP(H, a, b, c, d, GET(1) + 0x6ed9eba1, 3)
! 391: STEP(H, d, a, b, c, GET(9) + 0x6ed9eba1, 9)
! 392: STEP(H, c, d, a, b, GET(5) + 0x6ed9eba1, 11)
! 393: STEP(H, b, c, d, a, GET(13) + 0x6ed9eba1, 15)
! 394: STEP(H, a, b, c, d, GET(3) + 0x6ed9eba1, 3)
! 395: STEP(H, d, a, b, c, GET(11) + 0x6ed9eba1, 9)
! 396: STEP(H, c, d, a, b, GET(7) + 0x6ed9eba1, 11)
! 397: STEP(H, b, c, d, a, GET(15) + 0x6ed9eba1, 15)
! 398:
! 399: a += saved_a;
! 400: b += saved_b;
! 401: c += saved_c;
! 402: d += saved_d;
! 403:
! 404: ptr += 64;
! 405: } while(size -= 64);
! 406:
! 407: ctx->a = a;
! 408: ctx->b = b;
! 409: ctx->c = c;
! 410: ctx->d = d;
! 411:
! 412: return ptr;
! 413: }
! 414:
! 415: static void MD4_Init(MD4_CTX *ctx)
! 416: {
! 417: ctx->a = 0x67452301;
! 418: ctx->b = 0xefcdab89;
! 419: ctx->c = 0x98badcfe;
! 420: ctx->d = 0x10325476;
! 421:
! 422: ctx->lo = 0;
! 423: ctx->hi = 0;
! 424: }
! 425:
! 426: static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
! 427: {
! 428: MD4_u32plus saved_lo;
! 429: unsigned long used;
! 430:
! 431: saved_lo = ctx->lo;
! 432: ctx->lo = (saved_lo + size) & 0x1fffffff;
! 433: if(ctx->lo < saved_lo)
! 434: ctx->hi++;
! 435: ctx->hi += (MD4_u32plus)size >> 29;
! 436:
! 437: used = saved_lo & 0x3f;
! 438:
! 439: if(used) {
! 440: unsigned long available = 64 - used;
! 441:
! 442: if(size < available) {
! 443: memcpy(&ctx->buffer[used], data, size);
! 444: return;
! 445: }
! 446:
! 447: memcpy(&ctx->buffer[used], data, available);
! 448: data = (const unsigned char *)data + available;
! 449: size -= available;
! 450: body(ctx, ctx->buffer, 64);
! 451: }
! 452:
! 453: if(size >= 64) {
! 454: data = body(ctx, data, size & ~(unsigned long)0x3f);
! 455: size &= 0x3f;
! 456: }
! 457:
! 458: memcpy(ctx->buffer, data, size);
! 459: }
! 460:
! 461: static void MD4_Final(unsigned char *result, MD4_CTX *ctx)
! 462: {
! 463: unsigned long used, available;
! 464:
! 465: used = ctx->lo & 0x3f;
! 466:
! 467: ctx->buffer[used++] = 0x80;
! 468:
! 469: available = 64 - used;
! 470:
! 471: if(available < 8) {
! 472: memset(&ctx->buffer[used], 0, available);
! 473: body(ctx, ctx->buffer, 64);
! 474: used = 0;
! 475: available = 64;
! 476: }
! 477:
! 478: memset(&ctx->buffer[used], 0, available - 8);
! 479:
! 480: ctx->lo <<= 3;
! 481: ctx->buffer[56] = curlx_ultouc((ctx->lo)&0xff);
! 482: ctx->buffer[57] = curlx_ultouc((ctx->lo >> 8)&0xff);
! 483: ctx->buffer[58] = curlx_ultouc((ctx->lo >> 16)&0xff);
! 484: ctx->buffer[59] = curlx_ultouc((ctx->lo >> 24)&0xff);
! 485: ctx->buffer[60] = curlx_ultouc((ctx->hi)&0xff);
! 486: ctx->buffer[61] = curlx_ultouc((ctx->hi >> 8)&0xff);
! 487: ctx->buffer[62] = curlx_ultouc((ctx->hi >> 16)&0xff);
! 488: ctx->buffer[63] = curlx_ultouc(ctx->hi >> 24);
! 489:
! 490: body(ctx, ctx->buffer, 64);
! 491:
! 492: result[0] = curlx_ultouc((ctx->a)&0xff);
! 493: result[1] = curlx_ultouc((ctx->a >> 8)&0xff);
! 494: result[2] = curlx_ultouc((ctx->a >> 16)&0xff);
! 495: result[3] = curlx_ultouc(ctx->a >> 24);
! 496: result[4] = curlx_ultouc((ctx->b)&0xff);
! 497: result[5] = curlx_ultouc((ctx->b >> 8)&0xff);
! 498: result[6] = curlx_ultouc((ctx->b >> 16)&0xff);
! 499: result[7] = curlx_ultouc(ctx->b >> 24);
! 500: result[8] = curlx_ultouc((ctx->c)&0xff);
! 501: result[9] = curlx_ultouc((ctx->c >> 8)&0xff);
! 502: result[10] = curlx_ultouc((ctx->c >> 16)&0xff);
! 503: result[11] = curlx_ultouc(ctx->c >> 24);
! 504: result[12] = curlx_ultouc((ctx->d)&0xff);
! 505: result[13] = curlx_ultouc((ctx->d >> 8)&0xff);
! 506: result[14] = curlx_ultouc((ctx->d >> 16)&0xff);
! 507: result[15] = curlx_ultouc(ctx->d >> 24);
! 508:
! 509: memset(ctx, 0, sizeof(*ctx));
! 510: }
! 511:
! 512: #endif /* CRYPTO LIBS */
! 513:
! 514: void Curl_md4it(unsigned char *output, const unsigned char *input,
! 515: const size_t len)
! 516: {
! 517: MD4_CTX ctx;
! 518:
! 519: MD4_Init(&ctx);
! 520: MD4_Update(&ctx, input, curlx_uztoui(len));
! 521: MD4_Final(output, &ctx);
! 522: }
! 523:
! 524: #endif /* CURL_DISABLE_CRYPTO_AUTH */
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