1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2014, 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 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) && !defined(USE_WINDOWS_SSPI) 26 27/* 28 * NTLM details: 29 * 30 * http://davenport.sourceforge.net/ntlm.html 31 * http://www.innovation.ch/java/ntlm.html 32 */ 33 34#ifdef USE_SSLEAY 35 36# ifdef USE_OPENSSL 37# include <openssl/des.h> 38# ifndef OPENSSL_NO_MD4 39# include <openssl/md4.h> 40# endif 41# include <openssl/md5.h> 42# include <openssl/ssl.h> 43# include <openssl/rand.h> 44# else 45# include <des.h> 46# ifndef OPENSSL_NO_MD4 47# include <md4.h> 48# endif 49# include <md5.h> 50# include <ssl.h> 51# include <rand.h> 52# endif 53# if (OPENSSL_VERSION_NUMBER < 0x00907001L) 54# define DES_key_schedule des_key_schedule 55# define DES_cblock des_cblock 56# define DES_set_odd_parity des_set_odd_parity 57# define DES_set_key des_set_key 58# define DES_ecb_encrypt des_ecb_encrypt 59# define DESKEY(x) x 60# define DESKEYARG(x) x 61# else 62# define DESKEYARG(x) *x 63# define DESKEY(x) &x 64# endif 65 66#elif defined(USE_GNUTLS_NETTLE) 67 68# include <nettle/des.h> 69# include <nettle/md4.h> 70 71#elif defined(USE_GNUTLS) 72 73# include <gcrypt.h> 74# define MD5_DIGEST_LENGTH 16 75# define MD4_DIGEST_LENGTH 16 76 77#elif defined(USE_NSS) 78 79# include <nss.h> 80# include <pk11pub.h> 81# include <hasht.h> 82# include "curl_md4.h" 83# define MD5_DIGEST_LENGTH MD5_LENGTH 84 85#elif defined(USE_DARWINSSL) 86 87# include <CommonCrypto/CommonCryptor.h> 88# include <CommonCrypto/CommonDigest.h> 89 90#else 91# error "Can't compile NTLM support without a crypto library." 92#endif 93 94#include "urldata.h" 95#include "non-ascii.h" 96#include "rawstr.h" 97#include "curl_memory.h" 98#include "curl_ntlm_core.h" 99#include "curl_md5.h" 100#include "curl_hmac.h" 101#include "warnless.h" 102 103#define _MPRINTF_REPLACE /* use our functions only */ 104#include <curl/mprintf.h> 105 106/* The last #include file should be: */ 107#include "memdebug.h" 108 109#define NTLM_HMAC_MD5_LEN (16) 110#define NTLMv2_BLOB_SIGNATURE "\x01\x01\x00\x00" 111#define NTLMv2_BLOB_LEN (44 -16 + ntlm->target_info_len + 4) 112 113#ifdef USE_SSLEAY 114/* 115 * Turns a 56 bit key into the 64 bit, odd parity key and sets the key. The 116 * key schedule ks is also set. 117 */ 118static void setup_des_key(const unsigned char *key_56, 119 DES_key_schedule DESKEYARG(ks)) 120{ 121 DES_cblock key; 122 123 key[0] = key_56[0]; 124 key[1] = (unsigned char)(((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1)); 125 key[2] = (unsigned char)(((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2)); 126 key[3] = (unsigned char)(((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3)); 127 key[4] = (unsigned char)(((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4)); 128 key[5] = (unsigned char)(((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5)); 129 key[6] = (unsigned char)(((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6)); 130 key[7] = (unsigned char) ((key_56[6] << 1) & 0xFF); 131 132 DES_set_odd_parity(&key); 133 DES_set_key(&key, ks); 134} 135 136#else /* defined(USE_SSLEAY) */ 137 138/* 139 * Turns a 56 bit key into the 64 bit, odd parity key. Used by GnuTLS and NSS. 140 */ 141static void extend_key_56_to_64(const unsigned char *key_56, char *key) 142{ 143 key[0] = key_56[0]; 144 key[1] = (unsigned char)(((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1)); 145 key[2] = (unsigned char)(((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2)); 146 key[3] = (unsigned char)(((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3)); 147 key[4] = (unsigned char)(((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4)); 148 key[5] = (unsigned char)(((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5)); 149 key[6] = (unsigned char)(((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6)); 150 key[7] = (unsigned char) ((key_56[6] << 1) & 0xFF); 151} 152 153#if defined(USE_GNUTLS_NETTLE) 154 155static void setup_des_key(const unsigned char *key_56, 156 struct des_ctx *des) 157{ 158 char key[8]; 159 extend_key_56_to_64(key_56, key); 160 des_set_key(des, (const uint8_t*)key); 161} 162 163#elif defined(USE_GNUTLS) 164 165/* 166 * Turns a 56 bit key into the 64 bit, odd parity key and sets the key. 167 */ 168static void setup_des_key(const unsigned char *key_56, 169 gcry_cipher_hd_t *des) 170{ 171 char key[8]; 172 extend_key_56_to_64(key_56, key); 173 gcry_cipher_setkey(*des, key, 8); 174} 175 176#elif defined(USE_NSS) 177 178/* 179 * Expands a 56 bit key KEY_56 to 64 bit and encrypts 64 bit of data, using 180 * the expanded key. The caller is responsible for giving 64 bit of valid 181 * data is IN and (at least) 64 bit large buffer as OUT. 182 */ 183static bool encrypt_des(const unsigned char *in, unsigned char *out, 184 const unsigned char *key_56) 185{ 186 const CK_MECHANISM_TYPE mech = CKM_DES_ECB; /* DES cipher in ECB mode */ 187 PK11SlotInfo *slot = NULL; 188 char key[8]; /* expanded 64 bit key */ 189 SECItem key_item; 190 PK11SymKey *symkey = NULL; 191 SECItem *param = NULL; 192 PK11Context *ctx = NULL; 193 int out_len; /* not used, required by NSS */ 194 bool rv = FALSE; 195 196 /* use internal slot for DES encryption (requires NSS to be initialized) */ 197 slot = PK11_GetInternalKeySlot(); 198 if(!slot) 199 return FALSE; 200 201 /* expand the 56 bit key to 64 bit and wrap by NSS */ 202 extend_key_56_to_64(key_56, key); 203 key_item.data = (unsigned char *)key; 204 key_item.len = /* hard-wired */ 8; 205 symkey = PK11_ImportSymKey(slot, mech, PK11_OriginUnwrap, CKA_ENCRYPT, 206 &key_item, NULL); 207 if(!symkey) 208 goto fail; 209 210 /* create DES encryption context */ 211 param = PK11_ParamFromIV(mech, /* no IV in ECB mode */ NULL); 212 if(!param) 213 goto fail; 214 ctx = PK11_CreateContextBySymKey(mech, CKA_ENCRYPT, symkey, param); 215 if(!ctx) 216 goto fail; 217 218 /* perform the encryption */ 219 if(SECSuccess == PK11_CipherOp(ctx, out, &out_len, /* outbuflen */ 8, 220 (unsigned char *)in, /* inbuflen */ 8) 221 && SECSuccess == PK11_Finalize(ctx)) 222 rv = /* all OK */ TRUE; 223 224fail: 225 /* cleanup */ 226 if(ctx) 227 PK11_DestroyContext(ctx, PR_TRUE); 228 if(symkey) 229 PK11_FreeSymKey(symkey); 230 if(param) 231 SECITEM_FreeItem(param, PR_TRUE); 232 PK11_FreeSlot(slot); 233 return rv; 234} 235 236#elif defined(USE_DARWINSSL) 237 238static bool encrypt_des(const unsigned char *in, unsigned char *out, 239 const unsigned char *key_56) 240{ 241 char key[8]; 242 size_t out_len; 243 CCCryptorStatus err; 244 245 extend_key_56_to_64(key_56, key); 246 err = CCCrypt(kCCEncrypt, kCCAlgorithmDES, kCCOptionECBMode, key, 247 kCCKeySizeDES, NULL, in, 8 /* inbuflen */, out, 248 8 /* outbuflen */, &out_len); 249 return err == kCCSuccess; 250} 251 252#endif /* defined(USE_DARWINSSL) */ 253 254#endif /* defined(USE_SSLEAY) */ 255 256 /* 257 * takes a 21 byte array and treats it as 3 56-bit DES keys. The 258 * 8 byte plaintext is encrypted with each key and the resulting 24 259 * bytes are stored in the results array. 260 */ 261void Curl_ntlm_core_lm_resp(const unsigned char *keys, 262 const unsigned char *plaintext, 263 unsigned char *results) 264{ 265#ifdef USE_SSLEAY 266 DES_key_schedule ks; 267 268 setup_des_key(keys, DESKEY(ks)); 269 DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) results, 270 DESKEY(ks), DES_ENCRYPT); 271 272 setup_des_key(keys + 7, DESKEY(ks)); 273 DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 8), 274 DESKEY(ks), DES_ENCRYPT); 275 276 setup_des_key(keys + 14, DESKEY(ks)); 277 DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 16), 278 DESKEY(ks), DES_ENCRYPT); 279#elif defined(USE_GNUTLS_NETTLE) 280 struct des_ctx des; 281 setup_des_key(keys, &des); 282 des_encrypt(&des, 8, results, plaintext); 283 setup_des_key(keys + 7, &des); 284 des_encrypt(&des, 8, results + 8, plaintext); 285 setup_des_key(keys + 14, &des); 286 des_encrypt(&des, 8, results + 16, plaintext); 287#elif defined(USE_GNUTLS) 288 gcry_cipher_hd_t des; 289 290 gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); 291 setup_des_key(keys, &des); 292 gcry_cipher_encrypt(des, results, 8, plaintext, 8); 293 gcry_cipher_close(des); 294 295 gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); 296 setup_des_key(keys + 7, &des); 297 gcry_cipher_encrypt(des, results + 8, 8, plaintext, 8); 298 gcry_cipher_close(des); 299 300 gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); 301 setup_des_key(keys + 14, &des); 302 gcry_cipher_encrypt(des, results + 16, 8, plaintext, 8); 303 gcry_cipher_close(des); 304#elif defined(USE_NSS) || defined(USE_DARWINSSL) 305 encrypt_des(plaintext, results, keys); 306 encrypt_des(plaintext, results + 8, keys + 7); 307 encrypt_des(plaintext, results + 16, keys + 14); 308#endif 309} 310 311/* 312 * Set up lanmanager hashed password 313 */ 314void Curl_ntlm_core_mk_lm_hash(struct SessionHandle *data, 315 const char *password, 316 unsigned char *lmbuffer /* 21 bytes */) 317{ 318 CURLcode res; 319 unsigned char pw[14]; 320 static const unsigned char magic[] = { 321 0x4B, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 /* i.e. KGS!@#$% */ 322 }; 323 size_t len = CURLMIN(strlen(password), 14); 324 325 Curl_strntoupper((char *)pw, password, len); 326 memset(&pw[len], 0, 14 - len); 327 328 /* 329 * The LanManager hashed password needs to be created using the 330 * password in the network encoding not the host encoding. 331 */ 332 res = Curl_convert_to_network(data, (char *)pw, 14); 333 if(res) 334 return; 335 336 { 337 /* Create LanManager hashed password. */ 338 339#ifdef USE_SSLEAY 340 DES_key_schedule ks; 341 342 setup_des_key(pw, DESKEY(ks)); 343 DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)lmbuffer, 344 DESKEY(ks), DES_ENCRYPT); 345 346 setup_des_key(pw + 7, DESKEY(ks)); 347 DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)(lmbuffer + 8), 348 DESKEY(ks), DES_ENCRYPT); 349#elif defined(USE_GNUTLS_NETTLE) 350 struct des_ctx des; 351 setup_des_key(pw, &des); 352 des_encrypt(&des, 8, lmbuffer, magic); 353 setup_des_key(pw + 7, &des); 354 des_encrypt(&des, 8, lmbuffer + 8, magic); 355#elif defined(USE_GNUTLS) 356 gcry_cipher_hd_t des; 357 358 gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); 359 setup_des_key(pw, &des); 360 gcry_cipher_encrypt(des, lmbuffer, 8, magic, 8); 361 gcry_cipher_close(des); 362 363 gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); 364 setup_des_key(pw + 7, &des); 365 gcry_cipher_encrypt(des, lmbuffer + 8, 8, magic, 8); 366 gcry_cipher_close(des); 367#elif defined(USE_NSS) || defined(USE_DARWINSSL) 368 encrypt_des(magic, lmbuffer, pw); 369 encrypt_des(magic, lmbuffer + 8, pw + 7); 370#endif 371 372 memset(lmbuffer + 16, 0, 21 - 16); 373 } 374} 375 376#if USE_NTRESPONSES 377static void ascii_to_unicode_le(unsigned char *dest, const char *src, 378 size_t srclen) 379{ 380 size_t i; 381 for(i = 0; i < srclen; i++) { 382 dest[2 * i] = (unsigned char)src[i]; 383 dest[2 * i + 1] = '\0'; 384 } 385} 386 387static void ascii_uppercase_to_unicode_le(unsigned char *dest, 388 const char *src, size_t srclen) 389{ 390 size_t i; 391 for(i = 0; i < srclen; i++) { 392 dest[2 * i] = (unsigned char)(toupper(src[i])); 393 dest[2 * i + 1] = '\0'; 394 } 395} 396 397static void write32_le(const int value, unsigned char *buffer) 398{ 399 buffer[0] = (char)(value & 0x000000FF); 400 buffer[1] = (char)((value & 0x0000FF00) >> 8); 401 buffer[2] = (char)((value & 0x00FF0000) >> 16); 402 buffer[3] = (char)((value & 0xFF000000) >> 24); 403} 404 405#if defined(HAVE_LONGLONG) 406static void write64_le(const long long value, unsigned char *buffer) 407#else 408static void write64_le(const __int64 value, unsigned char *buffer) 409#endif 410{ 411 write32_le((int)value, buffer); 412 write32_le((int)(value >> 32), buffer + 4); 413} 414 415/* 416 * Set up nt hashed passwords 417 */ 418CURLcode Curl_ntlm_core_mk_nt_hash(struct SessionHandle *data, 419 const char *password, 420 unsigned char *ntbuffer /* 21 bytes */) 421{ 422 size_t len = strlen(password); 423 unsigned char *pw = malloc(len * 2); 424 CURLcode result; 425 if(!pw) 426 return CURLE_OUT_OF_MEMORY; 427 428 ascii_to_unicode_le(pw, password, len); 429 430 /* 431 * The NT hashed password needs to be created using the password in the 432 * network encoding not the host encoding. 433 */ 434 result = Curl_convert_to_network(data, (char *)pw, len * 2); 435 if(result) 436 return result; 437 438 { 439 /* Create NT hashed password. */ 440#ifdef USE_SSLEAY 441 MD4_CTX MD4pw; 442 MD4_Init(&MD4pw); 443 MD4_Update(&MD4pw, pw, 2 * len); 444 MD4_Final(ntbuffer, &MD4pw); 445#elif defined(USE_GNUTLS_NETTLE) 446 struct md4_ctx MD4pw; 447 md4_init(&MD4pw); 448 md4_update(&MD4pw, (unsigned int)(2 * len), pw); 449 md4_digest(&MD4pw, MD4_DIGEST_SIZE, ntbuffer); 450#elif defined(USE_GNUTLS) 451 gcry_md_hd_t MD4pw; 452 gcry_md_open(&MD4pw, GCRY_MD_MD4, 0); 453 gcry_md_write(MD4pw, pw, 2 * len); 454 memcpy (ntbuffer, gcry_md_read (MD4pw, 0), MD4_DIGEST_LENGTH); 455 gcry_md_close(MD4pw); 456#elif defined(USE_NSS) 457 Curl_md4it(ntbuffer, pw, 2 * len); 458#elif defined(USE_DARWINSSL) 459 (void)CC_MD4(pw, (CC_LONG)(2 * len), ntbuffer); 460#endif 461 462 memset(ntbuffer + 16, 0, 21 - 16); 463 } 464 465 free(pw); 466 467 return CURLE_OK; 468} 469 470/* This returns the HMAC MD5 digest */ 471CURLcode Curl_hmac_md5(const unsigned char *key, unsigned int keylen, 472 const unsigned char *data, unsigned int datalen, 473 unsigned char *output) 474{ 475 HMAC_context *ctxt = Curl_HMAC_init(Curl_HMAC_MD5, key, keylen); 476 477 if(!ctxt) 478 return CURLE_OUT_OF_MEMORY; 479 480 /* Update the digest with the given challenge */ 481 Curl_HMAC_update(ctxt, data, datalen); 482 483 /* Finalise the digest */ 484 Curl_HMAC_final(ctxt, output); 485 486 return CURLE_OK; 487} 488 489/* This creates the NTLMv2 hash by using NTLM hash as the key and Unicode 490 * (uppercase UserName + Domain) as the data 491 */ 492CURLcode Curl_ntlm_core_mk_ntlmv2_hash(const char *user, size_t userlen, 493 const char *domain, size_t domlen, 494 unsigned char *ntlmhash, 495 unsigned char *ntlmv2hash) 496{ 497 /* Unicode representation */ 498 size_t identity_len = (userlen + domlen) * 2; 499 unsigned char *identity = malloc(identity_len); 500 CURLcode res = CURLE_OK; 501 502 if(!identity) 503 return CURLE_OUT_OF_MEMORY; 504 505 ascii_uppercase_to_unicode_le(identity, user, userlen); 506 ascii_to_unicode_le(identity + (userlen << 1), domain, domlen); 507 508 res = Curl_hmac_md5(ntlmhash, 16, identity, curlx_uztoui(identity_len), 509 ntlmv2hash); 510 511 Curl_safefree(identity); 512 513 return res; 514} 515 516/* 517 * Curl_ntlm_core_mk_ntlmv2_resp() 518 * 519 * This creates the NTLMv2 response as set in the ntlm type-3 message. 520 * 521 * Parameters: 522 * 523 * ntlmv2hash [in] - The ntlmv2 hash (16 bytes) 524 * challenge_client [in] - The client nonce (8 bytes) 525 * ntlm [in] - The ntlm data struct being used to read TargetInfo 526 and Server challenge received in the type-2 message 527 * ntresp [out] - The address where a pointer to newly allocated 528 * memory holding the NTLMv2 response. 529 * ntresp_len [out] - The length of the output message. 530 * 531 * Returns CURLE_OK on success. 532 */ 533CURLcode Curl_ntlm_core_mk_ntlmv2_resp(unsigned char *ntlmv2hash, 534 unsigned char *challenge_client, 535 struct ntlmdata *ntlm, 536 unsigned char **ntresp, 537 unsigned int *ntresp_len) 538{ 539/* NTLMv2 response structure : 540------------------------------------------------------------------------------ 5410 HMAC MD5 16 bytes 542------BLOB-------------------------------------------------------------------- 54316 Signature 0x01010000 54420 Reserved long (0x00000000) 54524 Timestamp LE, 64-bit signed value representing the number of 546 tenths of a microsecond since January 1, 1601. 54732 Client Nonce 8 bytes 54840 Unknown 4 bytes 54944 Target Info N bytes (from the type-2 message) 55044+N Unknown 4 bytes 551------------------------------------------------------------------------------ 552*/ 553 554 unsigned int len = 0; 555 unsigned char *ptr = NULL; 556 unsigned char hmac_output[NTLM_HMAC_MD5_LEN]; 557#if defined(HAVE_LONGLONG) 558 long long tw; 559#else 560 __int64 tw; 561#endif 562 CURLcode res = CURLE_OK; 563 564 /* Calculate the timestamp */ 565#ifdef DEBUGBUILD 566 char *force_timestamp = getenv("CURL_FORCETIME"); 567 if(force_timestamp) 568 tw = 11644473600ULL * 10000000ULL; 569 else 570#endif 571 tw = ((long long)time(NULL) + 11644473600ULL) * 10000000ULL; 572 573 /* Calculate the response len */ 574 len = NTLM_HMAC_MD5_LEN + NTLMv2_BLOB_LEN; 575 576 /* Allocate the response */ 577 ptr = malloc(len); 578 if(!ptr) 579 return CURLE_OUT_OF_MEMORY; 580 581 memset(ptr, 0, len); 582 583 /* Create the BLOB structure */ 584 snprintf((char *)ptr + NTLM_HMAC_MD5_LEN, NTLMv2_BLOB_LEN, 585 NTLMv2_BLOB_SIGNATURE 586 "%c%c%c%c", /* Reserved = 0 */ 587 0, 0, 0, 0); 588 589 write64_le(tw, ptr + 24); 590 memcpy(ptr + 32, challenge_client, 8); 591 memcpy(ptr + 44, ntlm->target_info, ntlm->target_info_len); 592 593 /* Concatenate the Type 2 challenge with the BLOB and do HMAC MD5 */ 594 memcpy(ptr + 8, &ntlm->nonce[0], 8); 595 res = Curl_hmac_md5(ntlmv2hash, NTLM_HMAC_MD5_LEN, ptr + 8, 596 NTLMv2_BLOB_LEN + 8, hmac_output); 597 if(res) { 598 Curl_safefree(ptr); 599 return res; 600 } 601 602 /* Concatenate the HMAC MD5 output with the BLOB */ 603 memcpy(ptr, hmac_output, NTLM_HMAC_MD5_LEN); 604 605 /* Return the response */ 606 *ntresp = ptr; 607 *ntresp_len = len; 608 609 return res; 610} 611 612/* 613 * Curl_ntlm_core_mk_lmv2_resp() 614 * 615 * This creates the LMv2 response as used in the ntlm type-3 message. 616 * 617 * Parameters: 618 * 619 * ntlmv2hash [in] - The ntlmv2 hash (16 bytes) 620 * challenge_client [in] - The client nonce (8 bytes) 621 * challenge_client [in] - The server challenge (8 bytes) 622 * lmresp [out] - The LMv2 response (24 bytes) 623 * 624 * Returns CURLE_OK on success. 625 */ 626CURLcode Curl_ntlm_core_mk_lmv2_resp(unsigned char *ntlmv2hash, 627 unsigned char *challenge_client, 628 unsigned char *challenge_server, 629 unsigned char *lmresp) 630{ 631 unsigned char data[16]; 632 unsigned char hmac_output[16]; 633 CURLcode res = CURLE_OK; 634 635 memcpy(&data[0], challenge_server, 8); 636 memcpy(&data[8], challenge_client, 8); 637 638 res = Curl_hmac_md5(ntlmv2hash, 16, &data[0], 16, hmac_output); 639 if(res) 640 return res; 641 642 /* Concatenate the HMAC MD5 output with the client nonce */ 643 memcpy(lmresp, hmac_output, 16); 644 memcpy(lmresp+16, challenge_client, 8); 645 646 return res; 647} 648 649#endif /* USE_NTRESPONSES */ 650 651#endif /* USE_NTLM && !USE_WINDOWS_SSPI */ 652