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 #if defined(USE_NTLM) 26 27 /* 28 * NTLM details: 29 * 30 * http://davenport.sourceforge.net/ntlm.html 31 * http://www.innovation.ch/java/ntlm.html 32 */ 33 34 #if !defined(USE_WINDOWS_SSPI) || defined(USE_WIN32_CRYPTO) 35 36 #ifdef USE_OPENSSL 37 38 # ifdef USE_OPENSSL 39 # include <openssl/des.h> 40 # ifndef OPENSSL_NO_MD4 41 # include <openssl/md4.h> 42 # endif 43 # include <openssl/md5.h> 44 # include <openssl/ssl.h> 45 # include <openssl/rand.h> 46 # else 47 # include <des.h> 48 # ifndef OPENSSL_NO_MD4 49 # include <md4.h> 50 # endif 51 # include <md5.h> 52 # include <ssl.h> 53 # include <rand.h> 54 # endif 55 # if (OPENSSL_VERSION_NUMBER < 0x00907001L) 56 # define DES_key_schedule des_key_schedule 57 # define DES_cblock des_cblock 58 # define DES_set_odd_parity des_set_odd_parity 59 # define DES_set_key des_set_key 60 # define DES_ecb_encrypt des_ecb_encrypt 61 # define DESKEY(x) x 62 # define DESKEYARG(x) x 63 # else 64 # define DESKEYARG(x) *x 65 # define DESKEY(x) &x 66 # endif 67 68 #elif defined(USE_GNUTLS_NETTLE) 69 70 # include <nettle/des.h> 71 # include <nettle/md4.h> 72 73 #elif defined(USE_GNUTLS) 74 75 # include <gcrypt.h> 76 # define MD5_DIGEST_LENGTH 16 77 # define MD4_DIGEST_LENGTH 16 78 79 #elif defined(USE_NSS) 80 81 # include <nss.h> 82 # include <pk11pub.h> 83 # include <hasht.h> 84 # include "curl_md4.h" 85 # define MD5_DIGEST_LENGTH MD5_LENGTH 86 87 #elif defined(USE_DARWINSSL) 88 89 # include <CommonCrypto/CommonCryptor.h> 90 # include <CommonCrypto/CommonDigest.h> 91 92 #elif defined(USE_OS400CRYPTO) 93 # include "cipher.mih" /* mih/cipher */ 94 # include "curl_md4.h" 95 #elif defined(USE_WIN32_CRYPTO) 96 # include <wincrypt.h> 97 #else 98 # error "Can't compile NTLM support without a crypto library." 99 #endif 100 101 #include "urldata.h" 102 #include "non-ascii.h" 103 #include "rawstr.h" 104 #include "curl_ntlm_core.h" 105 #include "curl_md5.h" 106 #include "curl_hmac.h" 107 #include "warnless.h" 108 #include "curl_endian.h" 109 #include "curl_des.h" 110 #include "curl_printf.h" 111 112 /* The last #include files should be: */ 113 #include "curl_memory.h" 114 #include "memdebug.h" 115 116 #define NTLM_HMAC_MD5_LEN (16) 117 #define NTLMv2_BLOB_SIGNATURE "\x01\x01\x00\x00" 118 #define NTLMv2_BLOB_LEN (44 -16 + ntlm->target_info_len + 4) 119 120 /* 121 * Turns a 56-bit key into being 64-bit wide. 122 */ 123 static void extend_key_56_to_64(const unsigned char *key_56, char *key) 124 { 125 key[0] = key_56[0]; 126 key[1] = (unsigned char)(((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1)); 127 key[2] = (unsigned char)(((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2)); 128 key[3] = (unsigned char)(((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3)); 129 key[4] = (unsigned char)(((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4)); 130 key[5] = (unsigned char)(((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5)); 131 key[6] = (unsigned char)(((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6)); 132 key[7] = (unsigned char) ((key_56[6] << 1) & 0xFF); 133 } 134 135 #ifdef USE_OPENSSL 136 /* 137 * Turns a 56 bit key into the 64 bit, odd parity key and sets the key. The 138 * key schedule ks is also set. 139 */ 140 static void setup_des_key(const unsigned char *key_56, 141 DES_key_schedule DESKEYARG(ks)) 142 { 143 DES_cblock key; 144 145 /* Expand the 56-bit key to 64-bits */ 146 extend_key_56_to_64(key_56, (char *) key); 147 148 /* Set the key parity to odd */ 149 #if defined(HAVE_BORINGSSL) 150 Curl_des_set_odd_parity((unsigned char *) &key, sizeof(key)); 151 #else 152 DES_set_odd_parity(&key); 153 #endif 154 155 /* Set the key */ 156 DES_set_key(&key, ks); 157 } 158 159 #elif defined(USE_GNUTLS_NETTLE) 160 161 static void setup_des_key(const unsigned char *key_56, 162 struct des_ctx *des) 163 { 164 char key[8]; 165 166 /* Expand the 56-bit key to 64-bits */ 167 extend_key_56_to_64(key_56, key); 168 169 /* Set the key parity to odd */ 170 Curl_des_set_odd_parity((unsigned char *) key, sizeof(key)); 171 172 /* Set the key */ 173 des_set_key(des, (const uint8_t *) key); 174 } 175 176 #elif defined(USE_GNUTLS) 177 178 /* 179 * Turns a 56 bit key into the 64 bit, odd parity key and sets the key. 180 */ 181 static void setup_des_key(const unsigned char *key_56, 182 gcry_cipher_hd_t *des) 183 { 184 char key[8]; 185 186 /* Expand the 56-bit key to 64-bits */ 187 extend_key_56_to_64(key_56, key); 188 189 /* Set the key parity to odd */ 190 Curl_des_set_odd_parity((unsigned char *) key, sizeof(key)); 191 192 /* Set the key */ 193 gcry_cipher_setkey(*des, key, sizeof(key)); 194 } 195 196 #elif defined(USE_NSS) 197 198 /* 199 * Expands a 56 bit key KEY_56 to 64 bit and encrypts 64 bit of data, using 200 * the expanded key. The caller is responsible for giving 64 bit of valid 201 * data is IN and (at least) 64 bit large buffer as OUT. 202 */ 203 static bool encrypt_des(const unsigned char *in, unsigned char *out, 204 const unsigned char *key_56) 205 { 206 const CK_MECHANISM_TYPE mech = CKM_DES_ECB; /* DES cipher in ECB mode */ 207 PK11SlotInfo *slot = NULL; 208 char key[8]; /* expanded 64 bit key */ 209 SECItem key_item; 210 PK11SymKey *symkey = NULL; 211 SECItem *param = NULL; 212 PK11Context *ctx = NULL; 213 int out_len; /* not used, required by NSS */ 214 bool rv = FALSE; 215 216 /* use internal slot for DES encryption (requires NSS to be initialized) */ 217 slot = PK11_GetInternalKeySlot(); 218 if(!slot) 219 return FALSE; 220 221 /* Expand the 56-bit key to 64-bits */ 222 extend_key_56_to_64(key_56, key); 223 224 /* Set the key parity to odd */ 225 Curl_des_set_odd_parity((unsigned char *) key, sizeof(key)); 226 227 /* Import the key */ 228 key_item.data = (unsigned char *)key; 229 key_item.len = sizeof(key); 230 symkey = PK11_ImportSymKey(slot, mech, PK11_OriginUnwrap, CKA_ENCRYPT, 231 &key_item, NULL); 232 if(!symkey) 233 goto fail; 234 235 /* Create the DES encryption context */ 236 param = PK11_ParamFromIV(mech, /* no IV in ECB mode */ NULL); 237 if(!param) 238 goto fail; 239 ctx = PK11_CreateContextBySymKey(mech, CKA_ENCRYPT, symkey, param); 240 if(!ctx) 241 goto fail; 242 243 /* Perform the encryption */ 244 if(SECSuccess == PK11_CipherOp(ctx, out, &out_len, /* outbuflen */ 8, 245 (unsigned char *)in, /* inbuflen */ 8) 246 && SECSuccess == PK11_Finalize(ctx)) 247 rv = /* all OK */ TRUE; 248 249 fail: 250 /* cleanup */ 251 if(ctx) 252 PK11_DestroyContext(ctx, PR_TRUE); 253 if(symkey) 254 PK11_FreeSymKey(symkey); 255 if(param) 256 SECITEM_FreeItem(param, PR_TRUE); 257 PK11_FreeSlot(slot); 258 return rv; 259 } 260 261 #elif defined(USE_DARWINSSL) 262 263 static bool encrypt_des(const unsigned char *in, unsigned char *out, 264 const unsigned char *key_56) 265 { 266 char key[8]; 267 size_t out_len; 268 CCCryptorStatus err; 269 270 /* Expand the 56-bit key to 64-bits */ 271 extend_key_56_to_64(key_56, key); 272 273 /* Set the key parity to odd */ 274 Curl_des_set_odd_parity((unsigned char *) key, sizeof(key)); 275 276 /* Perform the encryption */ 277 err = CCCrypt(kCCEncrypt, kCCAlgorithmDES, kCCOptionECBMode, key, 278 kCCKeySizeDES, NULL, in, 8 /* inbuflen */, out, 279 8 /* outbuflen */, &out_len); 280 281 return err == kCCSuccess; 282 } 283 284 #elif defined(USE_OS400CRYPTO) 285 286 static bool encrypt_des(const unsigned char *in, unsigned char *out, 287 const unsigned char *key_56) 288 { 289 char key[8]; 290 _CIPHER_Control_T ctl; 291 292 /* Setup the cipher control structure */ 293 ctl.Func_ID = ENCRYPT_ONLY; 294 ctl.Data_Len = sizeof(key); 295 296 /* Expand the 56-bit key to 64-bits */ 297 extend_key_56_to_64(key_56, ctl.Crypto_Key); 298 299 /* Set the key parity to odd */ 300 Curl_des_set_odd_parity((unsigned char *) ctl.Crypto_Key, ctl.Data_Len); 301 302 /* Perform the encryption */ 303 _CIPHER((_SPCPTR *) &out, &ctl, (_SPCPTR *) &in); 304 305 return TRUE; 306 } 307 308 #elif defined(USE_WIN32_CRYPTO) 309 310 static bool encrypt_des(const unsigned char *in, unsigned char *out, 311 const unsigned char *key_56) 312 { 313 HCRYPTPROV hprov; 314 HCRYPTKEY hkey; 315 struct { 316 BLOBHEADER hdr; 317 unsigned int len; 318 char key[8]; 319 } blob; 320 DWORD len = 8; 321 322 /* Acquire the crypto provider */ 323 if(!CryptAcquireContext(&hprov, NULL, NULL, PROV_RSA_FULL, 324 CRYPT_VERIFYCONTEXT)) 325 return FALSE; 326 327 /* Setup the key blob structure */ 328 memset(&blob, 0, sizeof(blob)); 329 blob.hdr.bType = PLAINTEXTKEYBLOB; 330 blob.hdr.bVersion = 2; 331 blob.hdr.aiKeyAlg = CALG_DES; 332 blob.len = sizeof(blob.key); 333 334 /* Expand the 56-bit key to 64-bits */ 335 extend_key_56_to_64(key_56, blob.key); 336 337 /* Set the key parity to odd */ 338 Curl_des_set_odd_parity((unsigned char *) blob.key, sizeof(blob.key)); 339 340 /* Import the key */ 341 if(!CryptImportKey(hprov, (BYTE *) &blob, sizeof(blob), 0, 0, &hkey)) { 342 CryptReleaseContext(hprov, 0); 343 344 return FALSE; 345 } 346 347 memcpy(out, in, 8); 348 349 /* Perform the encryption */ 350 CryptEncrypt(hkey, 0, FALSE, 0, out, &len, len); 351 352 CryptDestroyKey(hkey); 353 CryptReleaseContext(hprov, 0); 354 355 return TRUE; 356 } 357 358 #endif /* defined(USE_WIN32_CRYPTO) */ 359 360 /* 361 * takes a 21 byte array and treats it as 3 56-bit DES keys. The 362 * 8 byte plaintext is encrypted with each key and the resulting 24 363 * bytes are stored in the results array. 364 */ 365 void Curl_ntlm_core_lm_resp(const unsigned char *keys, 366 const unsigned char *plaintext, 367 unsigned char *results) 368 { 369 #ifdef USE_OPENSSL 370 DES_key_schedule ks; 371 372 setup_des_key(keys, DESKEY(ks)); 373 DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) results, 374 DESKEY(ks), DES_ENCRYPT); 375 376 setup_des_key(keys + 7, DESKEY(ks)); 377 DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 8), 378 DESKEY(ks), DES_ENCRYPT); 379 380 setup_des_key(keys + 14, DESKEY(ks)); 381 DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 16), 382 DESKEY(ks), DES_ENCRYPT); 383 #elif defined(USE_GNUTLS_NETTLE) 384 struct des_ctx des; 385 setup_des_key(keys, &des); 386 des_encrypt(&des, 8, results, plaintext); 387 setup_des_key(keys + 7, &des); 388 des_encrypt(&des, 8, results + 8, plaintext); 389 setup_des_key(keys + 14, &des); 390 des_encrypt(&des, 8, results + 16, plaintext); 391 #elif defined(USE_GNUTLS) 392 gcry_cipher_hd_t des; 393 394 gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); 395 setup_des_key(keys, &des); 396 gcry_cipher_encrypt(des, results, 8, plaintext, 8); 397 gcry_cipher_close(des); 398 399 gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); 400 setup_des_key(keys + 7, &des); 401 gcry_cipher_encrypt(des, results + 8, 8, plaintext, 8); 402 gcry_cipher_close(des); 403 404 gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); 405 setup_des_key(keys + 14, &des); 406 gcry_cipher_encrypt(des, results + 16, 8, plaintext, 8); 407 gcry_cipher_close(des); 408 #elif defined(USE_NSS) || defined(USE_DARWINSSL) || defined(USE_OS400CRYPTO) \ 409 || defined(USE_WIN32_CRYPTO) 410 encrypt_des(plaintext, results, keys); 411 encrypt_des(plaintext, results + 8, keys + 7); 412 encrypt_des(plaintext, results + 16, keys + 14); 413 #endif 414 } 415 416 /* 417 * Set up lanmanager hashed password 418 */ 419 CURLcode Curl_ntlm_core_mk_lm_hash(struct SessionHandle *data, 420 const char *password, 421 unsigned char *lmbuffer /* 21 bytes */) 422 { 423 CURLcode result; 424 unsigned char pw[14]; 425 static const unsigned char magic[] = { 426 0x4B, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 /* i.e. KGS!@#$% */ 427 }; 428 size_t len = CURLMIN(strlen(password), 14); 429 430 Curl_strntoupper((char *)pw, password, len); 431 memset(&pw[len], 0, 14 - len); 432 433 /* 434 * The LanManager hashed password needs to be created using the 435 * password in the network encoding not the host encoding. 436 */ 437 result = Curl_convert_to_network(data, (char *)pw, 14); 438 if(result) 439 return result; 440 441 { 442 /* Create LanManager hashed password. */ 443 444 #ifdef USE_OPENSSL 445 DES_key_schedule ks; 446 447 setup_des_key(pw, DESKEY(ks)); 448 DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)lmbuffer, 449 DESKEY(ks), DES_ENCRYPT); 450 451 setup_des_key(pw + 7, DESKEY(ks)); 452 DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)(lmbuffer + 8), 453 DESKEY(ks), DES_ENCRYPT); 454 #elif defined(USE_GNUTLS_NETTLE) 455 struct des_ctx des; 456 setup_des_key(pw, &des); 457 des_encrypt(&des, 8, lmbuffer, magic); 458 setup_des_key(pw + 7, &des); 459 des_encrypt(&des, 8, lmbuffer + 8, magic); 460 #elif defined(USE_GNUTLS) 461 gcry_cipher_hd_t des; 462 463 gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); 464 setup_des_key(pw, &des); 465 gcry_cipher_encrypt(des, lmbuffer, 8, magic, 8); 466 gcry_cipher_close(des); 467 468 gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); 469 setup_des_key(pw + 7, &des); 470 gcry_cipher_encrypt(des, lmbuffer + 8, 8, magic, 8); 471 gcry_cipher_close(des); 472 #elif defined(USE_NSS) || defined(USE_DARWINSSL) || defined(USE_OS400CRYPTO) \ 473 || defined(USE_WIN32_CRYPTO) 474 encrypt_des(magic, lmbuffer, pw); 475 encrypt_des(magic, lmbuffer + 8, pw + 7); 476 #endif 477 478 memset(lmbuffer + 16, 0, 21 - 16); 479 } 480 481 return CURLE_OK; 482 } 483 484 #if USE_NTRESPONSES 485 static void ascii_to_unicode_le(unsigned char *dest, const char *src, 486 size_t srclen) 487 { 488 size_t i; 489 for(i = 0; i < srclen; i++) { 490 dest[2 * i] = (unsigned char)src[i]; 491 dest[2 * i + 1] = '\0'; 492 } 493 } 494 495 #if USE_NTLM_V2 && !defined(USE_WINDOWS_SSPI) 496 497 static void ascii_uppercase_to_unicode_le(unsigned char *dest, 498 const char *src, size_t srclen) 499 { 500 size_t i; 501 for(i = 0; i < srclen; i++) { 502 dest[2 * i] = (unsigned char)(toupper(src[i])); 503 dest[2 * i + 1] = '\0'; 504 } 505 } 506 507 #endif /* USE_NTLM_V2 && !USE_WINDOWS_SSPI */ 508 509 /* 510 * Set up nt hashed passwords 511 * @unittest: 1600 512 */ 513 CURLcode Curl_ntlm_core_mk_nt_hash(struct SessionHandle *data, 514 const char *password, 515 unsigned char *ntbuffer /* 21 bytes */) 516 { 517 size_t len = strlen(password); 518 unsigned char *pw = malloc(len * 2); 519 CURLcode result; 520 if(!pw) 521 return CURLE_OUT_OF_MEMORY; 522 523 ascii_to_unicode_le(pw, password, len); 524 525 /* 526 * The NT hashed password needs to be created using the password in the 527 * network encoding not the host encoding. 528 */ 529 result = Curl_convert_to_network(data, (char *)pw, len * 2); 530 if(result) 531 return result; 532 533 { 534 /* Create NT hashed password. */ 535 #ifdef USE_OPENSSL 536 MD4_CTX MD4pw; 537 MD4_Init(&MD4pw); 538 MD4_Update(&MD4pw, pw, 2 * len); 539 MD4_Final(ntbuffer, &MD4pw); 540 #elif defined(USE_GNUTLS_NETTLE) 541 struct md4_ctx MD4pw; 542 md4_init(&MD4pw); 543 md4_update(&MD4pw, (unsigned int)(2 * len), pw); 544 md4_digest(&MD4pw, MD4_DIGEST_SIZE, ntbuffer); 545 #elif defined(USE_GNUTLS) 546 gcry_md_hd_t MD4pw; 547 gcry_md_open(&MD4pw, GCRY_MD_MD4, 0); 548 gcry_md_write(MD4pw, pw, 2 * len); 549 memcpy (ntbuffer, gcry_md_read (MD4pw, 0), MD4_DIGEST_LENGTH); 550 gcry_md_close(MD4pw); 551 #elif defined(USE_NSS) || defined(USE_OS400CRYPTO) 552 Curl_md4it(ntbuffer, pw, 2 * len); 553 #elif defined(USE_DARWINSSL) 554 (void)CC_MD4(pw, (CC_LONG)(2 * len), ntbuffer); 555 #elif defined(USE_WIN32_CRYPTO) 556 HCRYPTPROV hprov; 557 if(CryptAcquireContext(&hprov, NULL, NULL, PROV_RSA_FULL, 558 CRYPT_VERIFYCONTEXT)) { 559 HCRYPTHASH hhash; 560 if(CryptCreateHash(hprov, CALG_MD4, 0, 0, &hhash)) { 561 DWORD length = 16; 562 CryptHashData(hhash, pw, (unsigned int)len * 2, 0); 563 CryptGetHashParam(hhash, HP_HASHVAL, ntbuffer, &length, 0); 564 CryptDestroyHash(hhash); 565 } 566 CryptReleaseContext(hprov, 0); 567 } 568 #endif 569 570 memset(ntbuffer + 16, 0, 21 - 16); 571 } 572 573 free(pw); 574 575 return CURLE_OK; 576 } 577 578 #if USE_NTLM_V2 && !defined(USE_WINDOWS_SSPI) 579 580 /* This returns the HMAC MD5 digest */ 581 CURLcode Curl_hmac_md5(const unsigned char *key, unsigned int keylen, 582 const unsigned char *data, unsigned int datalen, 583 unsigned char *output) 584 { 585 HMAC_context *ctxt = Curl_HMAC_init(Curl_HMAC_MD5, key, keylen); 586 587 if(!ctxt) 588 return CURLE_OUT_OF_MEMORY; 589 590 /* Update the digest with the given challenge */ 591 Curl_HMAC_update(ctxt, data, datalen); 592 593 /* Finalise the digest */ 594 Curl_HMAC_final(ctxt, output); 595 596 return CURLE_OK; 597 } 598 599 /* This creates the NTLMv2 hash by using NTLM hash as the key and Unicode 600 * (uppercase UserName + Domain) as the data 601 */ 602 CURLcode Curl_ntlm_core_mk_ntlmv2_hash(const char *user, size_t userlen, 603 const char *domain, size_t domlen, 604 unsigned char *ntlmhash, 605 unsigned char *ntlmv2hash) 606 { 607 /* Unicode representation */ 608 size_t identity_len = (userlen + domlen) * 2; 609 unsigned char *identity = malloc(identity_len); 610 CURLcode result = CURLE_OK; 611 612 if(!identity) 613 return CURLE_OUT_OF_MEMORY; 614 615 ascii_uppercase_to_unicode_le(identity, user, userlen); 616 ascii_to_unicode_le(identity + (userlen << 1), domain, domlen); 617 618 result = Curl_hmac_md5(ntlmhash, 16, identity, curlx_uztoui(identity_len), 619 ntlmv2hash); 620 621 free(identity); 622 623 return result; 624 } 625 626 /* 627 * Curl_ntlm_core_mk_ntlmv2_resp() 628 * 629 * This creates the NTLMv2 response as set in the ntlm type-3 message. 630 * 631 * Parameters: 632 * 633 * ntlmv2hash [in] - The ntlmv2 hash (16 bytes) 634 * challenge_client [in] - The client nonce (8 bytes) 635 * ntlm [in] - The ntlm data struct being used to read TargetInfo 636 and Server challenge received in the type-2 message 637 * ntresp [out] - The address where a pointer to newly allocated 638 * memory holding the NTLMv2 response. 639 * ntresp_len [out] - The length of the output message. 640 * 641 * Returns CURLE_OK on success. 642 */ 643 CURLcode Curl_ntlm_core_mk_ntlmv2_resp(unsigned char *ntlmv2hash, 644 unsigned char *challenge_client, 645 struct ntlmdata *ntlm, 646 unsigned char **ntresp, 647 unsigned int *ntresp_len) 648 { 649 /* NTLMv2 response structure : 650 ------------------------------------------------------------------------------ 651 0 HMAC MD5 16 bytes 652 ------BLOB-------------------------------------------------------------------- 653 16 Signature 0x01010000 654 20 Reserved long (0x00000000) 655 24 Timestamp LE, 64-bit signed value representing the number of 656 tenths of a microsecond since January 1, 1601. 657 32 Client Nonce 8 bytes 658 40 Unknown 4 bytes 659 44 Target Info N bytes (from the type-2 message) 660 44+N Unknown 4 bytes 661 ------------------------------------------------------------------------------ 662 */ 663 664 unsigned int len = 0; 665 unsigned char *ptr = NULL; 666 unsigned char hmac_output[NTLM_HMAC_MD5_LEN]; 667 #if defined(HAVE_LONGLONG) 668 long long tw; 669 #else 670 __int64 tw; 671 #endif 672 CURLcode result = CURLE_OK; 673 674 /* Calculate the timestamp */ 675 #ifdef DEBUGBUILD 676 char *force_timestamp = getenv("CURL_FORCETIME"); 677 if(force_timestamp) 678 tw = 11644473600ULL * 10000000ULL; 679 else 680 #endif 681 tw = ((long long)time(NULL) + 11644473600ULL) * 10000000ULL; 682 683 /* Calculate the response len */ 684 len = NTLM_HMAC_MD5_LEN + NTLMv2_BLOB_LEN; 685 686 /* Allocate the response */ 687 ptr = malloc(len); 688 if(!ptr) 689 return CURLE_OUT_OF_MEMORY; 690 691 memset(ptr, 0, len); 692 693 /* Create the BLOB structure */ 694 snprintf((char *)ptr + NTLM_HMAC_MD5_LEN, NTLMv2_BLOB_LEN, 695 NTLMv2_BLOB_SIGNATURE 696 "%c%c%c%c", /* Reserved = 0 */ 697 0, 0, 0, 0); 698 699 Curl_write64_le(tw, ptr + 24); 700 memcpy(ptr + 32, challenge_client, 8); 701 memcpy(ptr + 44, ntlm->target_info, ntlm->target_info_len); 702 703 /* Concatenate the Type 2 challenge with the BLOB and do HMAC MD5 */ 704 memcpy(ptr + 8, &ntlm->nonce[0], 8); 705 result = Curl_hmac_md5(ntlmv2hash, NTLM_HMAC_MD5_LEN, ptr + 8, 706 NTLMv2_BLOB_LEN + 8, hmac_output); 707 if(result) { 708 free(ptr); 709 return result; 710 } 711 712 /* Concatenate the HMAC MD5 output with the BLOB */ 713 memcpy(ptr, hmac_output, NTLM_HMAC_MD5_LEN); 714 715 /* Return the response */ 716 *ntresp = ptr; 717 *ntresp_len = len; 718 719 return result; 720 } 721 722 /* 723 * Curl_ntlm_core_mk_lmv2_resp() 724 * 725 * This creates the LMv2 response as used in the ntlm type-3 message. 726 * 727 * Parameters: 728 * 729 * ntlmv2hash [in] - The ntlmv2 hash (16 bytes) 730 * challenge_client [in] - The client nonce (8 bytes) 731 * challenge_client [in] - The server challenge (8 bytes) 732 * lmresp [out] - The LMv2 response (24 bytes) 733 * 734 * Returns CURLE_OK on success. 735 */ 736 CURLcode Curl_ntlm_core_mk_lmv2_resp(unsigned char *ntlmv2hash, 737 unsigned char *challenge_client, 738 unsigned char *challenge_server, 739 unsigned char *lmresp) 740 { 741 unsigned char data[16]; 742 unsigned char hmac_output[16]; 743 CURLcode result = CURLE_OK; 744 745 memcpy(&data[0], challenge_server, 8); 746 memcpy(&data[8], challenge_client, 8); 747 748 result = Curl_hmac_md5(ntlmv2hash, 16, &data[0], 16, hmac_output); 749 if(result) 750 return result; 751 752 /* Concatenate the HMAC MD5 output with the client nonce */ 753 memcpy(lmresp, hmac_output, 16); 754 memcpy(lmresp+16, challenge_client, 8); 755 756 return result; 757 } 758 759 #endif /* USE_NTLM_V2 && !USE_WINDOWS_SSPI */ 760 761 #endif /* USE_NTRESPONSES */ 762 763 #endif /* !USE_WINDOWS_SSPI || USE_WIN32_CRYPTO */ 764 765 #endif /* USE_NTLM */ 766
