/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2015, Daniel Stenberg, , et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at https://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ***************************************************************************/ #include "curl_setup.h" #if defined(USE_NTLM) /* * NTLM details: * * http://davenport.sourceforge.net/ntlm.html * http://www.innovation.ch/java/ntlm.html */ #if !defined(USE_WINDOWS_SSPI) || defined(USE_WIN32_CRYPTO) #ifdef USE_OPENSSL # ifdef USE_OPENSSL # include # ifndef OPENSSL_NO_MD4 # include # endif # include # include # include # else # include # ifndef OPENSSL_NO_MD4 # include # endif # include # include # include # endif # if (OPENSSL_VERSION_NUMBER < 0x00907001L) # define DES_key_schedule des_key_schedule # define DES_cblock des_cblock # define DES_set_odd_parity des_set_odd_parity # define DES_set_key des_set_key # define DES_ecb_encrypt des_ecb_encrypt # define DESKEY(x) x # define DESKEYARG(x) x # else # define DESKEYARG(x) *x # define DESKEY(x) &x # endif #elif defined(USE_GNUTLS_NETTLE) # include # include #elif defined(USE_GNUTLS) # include # define MD5_DIGEST_LENGTH 16 # define MD4_DIGEST_LENGTH 16 #elif defined(USE_NSS) # include # include # include # include "curl_md4.h" # define MD5_DIGEST_LENGTH MD5_LENGTH #elif defined(USE_DARWINSSL) # include # include #elif defined(USE_OS400CRYPTO) # include "cipher.mih" /* mih/cipher */ # include "curl_md4.h" #elif defined(USE_WIN32_CRYPTO) # include #else # error "Can't compile NTLM support without a crypto library." #endif #include "urldata.h" #include "non-ascii.h" #include "rawstr.h" #include "curl_ntlm_core.h" #include "curl_md5.h" #include "curl_hmac.h" #include "warnless.h" #include "curl_endian.h" #include "curl_des.h" #include "curl_printf.h" /* The last #include files should be: */ #include "curl_memory.h" #include "memdebug.h" #define NTLM_HMAC_MD5_LEN (16) #define NTLMv2_BLOB_SIGNATURE "\x01\x01\x00\x00" #define NTLMv2_BLOB_LEN (44 -16 + ntlm->target_info_len + 4) /* * Turns a 56-bit key into being 64-bit wide. */ static void extend_key_56_to_64(const unsigned char *key_56, char *key) { key[0] = key_56[0]; key[1] = (unsigned char)(((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1)); key[2] = (unsigned char)(((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2)); key[3] = (unsigned char)(((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3)); key[4] = (unsigned char)(((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4)); key[5] = (unsigned char)(((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5)); key[6] = (unsigned char)(((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6)); key[7] = (unsigned char) ((key_56[6] << 1) & 0xFF); } #ifdef USE_OPENSSL /* * Turns a 56 bit key into the 64 bit, odd parity key and sets the key. The * key schedule ks is also set. */ static void setup_des_key(const unsigned char *key_56, DES_key_schedule DESKEYARG(ks)) { DES_cblock key; /* Expand the 56-bit key to 64-bits */ extend_key_56_to_64(key_56, (char *) key); /* Set the key parity to odd */ #ifndef HAVE_DES_SET_ODD_PARITY /* older boringssl */ Curl_des_set_odd_parity((unsigned char *) &key, sizeof(key)); #else DES_set_odd_parity(&key); #endif /* Set the key */ DES_set_key(&key, ks); } #elif defined(USE_GNUTLS_NETTLE) static void setup_des_key(const unsigned char *key_56, struct des_ctx *des) { char key[8]; /* Expand the 56-bit key to 64-bits */ extend_key_56_to_64(key_56, key); /* Set the key parity to odd */ Curl_des_set_odd_parity((unsigned char *) key, sizeof(key)); /* Set the key */ des_set_key(des, (const uint8_t *) key); } #elif defined(USE_GNUTLS) /* * Turns a 56 bit key into the 64 bit, odd parity key and sets the key. */ static void setup_des_key(const unsigned char *key_56, gcry_cipher_hd_t *des) { char key[8]; /* Expand the 56-bit key to 64-bits */ extend_key_56_to_64(key_56, key); /* Set the key parity to odd */ Curl_des_set_odd_parity((unsigned char *) key, sizeof(key)); /* Set the key */ gcry_cipher_setkey(*des, key, sizeof(key)); } #elif defined(USE_NSS) /* * Expands a 56 bit key KEY_56 to 64 bit and encrypts 64 bit of data, using * the expanded key. The caller is responsible for giving 64 bit of valid * data is IN and (at least) 64 bit large buffer as OUT. */ static bool encrypt_des(const unsigned char *in, unsigned char *out, const unsigned char *key_56) { const CK_MECHANISM_TYPE mech = CKM_DES_ECB; /* DES cipher in ECB mode */ PK11SlotInfo *slot = NULL; char key[8]; /* expanded 64 bit key */ SECItem key_item; PK11SymKey *symkey = NULL; SECItem *param = NULL; PK11Context *ctx = NULL; int out_len; /* not used, required by NSS */ bool rv = FALSE; /* use internal slot for DES encryption (requires NSS to be initialized) */ slot = PK11_GetInternalKeySlot(); if(!slot) return FALSE; /* Expand the 56-bit key to 64-bits */ extend_key_56_to_64(key_56, key); /* Set the key parity to odd */ Curl_des_set_odd_parity((unsigned char *) key, sizeof(key)); /* Import the key */ key_item.data = (unsigned char *)key; key_item.len = sizeof(key); symkey = PK11_ImportSymKey(slot, mech, PK11_OriginUnwrap, CKA_ENCRYPT, &key_item, NULL); if(!symkey) goto fail; /* Create the DES encryption context */ param = PK11_ParamFromIV(mech, /* no IV in ECB mode */ NULL); if(!param) goto fail; ctx = PK11_CreateContextBySymKey(mech, CKA_ENCRYPT, symkey, param); if(!ctx) goto fail; /* Perform the encryption */ if(SECSuccess == PK11_CipherOp(ctx, out, &out_len, /* outbuflen */ 8, (unsigned char *)in, /* inbuflen */ 8) && SECSuccess == PK11_Finalize(ctx)) rv = /* all OK */ TRUE; fail: /* cleanup */ if(ctx) PK11_DestroyContext(ctx, PR_TRUE); if(symkey) PK11_FreeSymKey(symkey); if(param) SECITEM_FreeItem(param, PR_TRUE); PK11_FreeSlot(slot); return rv; } #elif defined(USE_DARWINSSL) static bool encrypt_des(const unsigned char *in, unsigned char *out, const unsigned char *key_56) { char key[8]; size_t out_len; CCCryptorStatus err; /* Expand the 56-bit key to 64-bits */ extend_key_56_to_64(key_56, key); /* Set the key parity to odd */ Curl_des_set_odd_parity((unsigned char *) key, sizeof(key)); /* Perform the encryption */ err = CCCrypt(kCCEncrypt, kCCAlgorithmDES, kCCOptionECBMode, key, kCCKeySizeDES, NULL, in, 8 /* inbuflen */, out, 8 /* outbuflen */, &out_len); return err == kCCSuccess; } #elif defined(USE_OS400CRYPTO) static bool encrypt_des(const unsigned char *in, unsigned char *out, const unsigned char *key_56) { char key[8]; _CIPHER_Control_T ctl; /* Setup the cipher control structure */ ctl.Func_ID = ENCRYPT_ONLY; ctl.Data_Len = sizeof(key); /* Expand the 56-bit key to 64-bits */ extend_key_56_to_64(key_56, ctl.Crypto_Key); /* Set the key parity to odd */ Curl_des_set_odd_parity((unsigned char *) ctl.Crypto_Key, ctl.Data_Len); /* Perform the encryption */ _CIPHER((_SPCPTR *) &out, &ctl, (_SPCPTR *) &in); return TRUE; } #elif defined(USE_WIN32_CRYPTO) static bool encrypt_des(const unsigned char *in, unsigned char *out, const unsigned char *key_56) { HCRYPTPROV hprov; HCRYPTKEY hkey; struct { BLOBHEADER hdr; unsigned int len; char key[8]; } blob; DWORD len = 8; /* Acquire the crypto provider */ if(!CryptAcquireContext(&hprov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) return FALSE; /* Setup the key blob structure */ memset(&blob, 0, sizeof(blob)); blob.hdr.bType = PLAINTEXTKEYBLOB; blob.hdr.bVersion = 2; blob.hdr.aiKeyAlg = CALG_DES; blob.len = sizeof(blob.key); /* Expand the 56-bit key to 64-bits */ extend_key_56_to_64(key_56, blob.key); /* Set the key parity to odd */ Curl_des_set_odd_parity((unsigned char *) blob.key, sizeof(blob.key)); /* Import the key */ if(!CryptImportKey(hprov, (BYTE *) &blob, sizeof(blob), 0, 0, &hkey)) { CryptReleaseContext(hprov, 0); return FALSE; } memcpy(out, in, 8); /* Perform the encryption */ CryptEncrypt(hkey, 0, FALSE, 0, out, &len, len); CryptDestroyKey(hkey); CryptReleaseContext(hprov, 0); return TRUE; } #endif /* defined(USE_WIN32_CRYPTO) */ /* * takes a 21 byte array and treats it as 3 56-bit DES keys. The * 8 byte plaintext is encrypted with each key and the resulting 24 * bytes are stored in the results array. */ void Curl_ntlm_core_lm_resp(const unsigned char *keys, const unsigned char *plaintext, unsigned char *results) { #ifdef USE_OPENSSL DES_key_schedule ks; setup_des_key(keys, DESKEY(ks)); DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) results, DESKEY(ks), DES_ENCRYPT); setup_des_key(keys + 7, DESKEY(ks)); DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 8), DESKEY(ks), DES_ENCRYPT); setup_des_key(keys + 14, DESKEY(ks)); DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 16), DESKEY(ks), DES_ENCRYPT); #elif defined(USE_GNUTLS_NETTLE) struct des_ctx des; setup_des_key(keys, &des); des_encrypt(&des, 8, results, plaintext); setup_des_key(keys + 7, &des); des_encrypt(&des, 8, results + 8, plaintext); setup_des_key(keys + 14, &des); des_encrypt(&des, 8, results + 16, plaintext); #elif defined(USE_GNUTLS) gcry_cipher_hd_t des; gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); setup_des_key(keys, &des); gcry_cipher_encrypt(des, results, 8, plaintext, 8); gcry_cipher_close(des); gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); setup_des_key(keys + 7, &des); gcry_cipher_encrypt(des, results + 8, 8, plaintext, 8); gcry_cipher_close(des); gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); setup_des_key(keys + 14, &des); gcry_cipher_encrypt(des, results + 16, 8, plaintext, 8); gcry_cipher_close(des); #elif defined(USE_NSS) || defined(USE_DARWINSSL) || defined(USE_OS400CRYPTO) \ || defined(USE_WIN32_CRYPTO) encrypt_des(plaintext, results, keys); encrypt_des(plaintext, results + 8, keys + 7); encrypt_des(plaintext, results + 16, keys + 14); #endif } /* * Set up lanmanager hashed password */ CURLcode Curl_ntlm_core_mk_lm_hash(struct SessionHandle *data, const char *password, unsigned char *lmbuffer /* 21 bytes */) { CURLcode result; unsigned char pw[14]; static const unsigned char magic[] = { 0x4B, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 /* i.e. KGS!@#$% */ }; size_t len = CURLMIN(strlen(password), 14); Curl_strntoupper((char *)pw, password, len); memset(&pw[len], 0, 14 - len); /* * The LanManager hashed password needs to be created using the * password in the network encoding not the host encoding. */ result = Curl_convert_to_network(data, (char *)pw, 14); if(result) return result; { /* Create LanManager hashed password. */ #ifdef USE_OPENSSL DES_key_schedule ks; setup_des_key(pw, DESKEY(ks)); DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)lmbuffer, DESKEY(ks), DES_ENCRYPT); setup_des_key(pw + 7, DESKEY(ks)); DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)(lmbuffer + 8), DESKEY(ks), DES_ENCRYPT); #elif defined(USE_GNUTLS_NETTLE) struct des_ctx des; setup_des_key(pw, &des); des_encrypt(&des, 8, lmbuffer, magic); setup_des_key(pw + 7, &des); des_encrypt(&des, 8, lmbuffer + 8, magic); #elif defined(USE_GNUTLS) gcry_cipher_hd_t des; gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); setup_des_key(pw, &des); gcry_cipher_encrypt(des, lmbuffer, 8, magic, 8); gcry_cipher_close(des); gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); setup_des_key(pw + 7, &des); gcry_cipher_encrypt(des, lmbuffer + 8, 8, magic, 8); gcry_cipher_close(des); #elif defined(USE_NSS) || defined(USE_DARWINSSL) || defined(USE_OS400CRYPTO) \ || defined(USE_WIN32_CRYPTO) encrypt_des(magic, lmbuffer, pw); encrypt_des(magic, lmbuffer + 8, pw + 7); #endif memset(lmbuffer + 16, 0, 21 - 16); } return CURLE_OK; } #if USE_NTRESPONSES static void ascii_to_unicode_le(unsigned char *dest, const char *src, size_t srclen) { size_t i; for(i = 0; i < srclen; i++) { dest[2 * i] = (unsigned char)src[i]; dest[2 * i + 1] = '\0'; } } #if USE_NTLM_V2 && !defined(USE_WINDOWS_SSPI) static void ascii_uppercase_to_unicode_le(unsigned char *dest, const char *src, size_t srclen) { size_t i; for(i = 0; i < srclen; i++) { dest[2 * i] = (unsigned char)(toupper(src[i])); dest[2 * i + 1] = '\0'; } } #endif /* USE_NTLM_V2 && !USE_WINDOWS_SSPI */ /* * Set up nt hashed passwords * @unittest: 1600 */ CURLcode Curl_ntlm_core_mk_nt_hash(struct SessionHandle *data, const char *password, unsigned char *ntbuffer /* 21 bytes */) { size_t len = strlen(password); unsigned char *pw = malloc(len * 2); CURLcode result; if(!pw) return CURLE_OUT_OF_MEMORY; ascii_to_unicode_le(pw, password, len); /* * The NT hashed password needs to be created using the password in the * network encoding not the host encoding. */ result = Curl_convert_to_network(data, (char *)pw, len * 2); if(result) return result; { /* Create NT hashed password. */ #ifdef USE_OPENSSL MD4_CTX MD4pw; MD4_Init(&MD4pw); MD4_Update(&MD4pw, pw, 2 * len); MD4_Final(ntbuffer, &MD4pw); #elif defined(USE_GNUTLS_NETTLE) struct md4_ctx MD4pw; md4_init(&MD4pw); md4_update(&MD4pw, (unsigned int)(2 * len), pw); md4_digest(&MD4pw, MD4_DIGEST_SIZE, ntbuffer); #elif defined(USE_GNUTLS) gcry_md_hd_t MD4pw; gcry_md_open(&MD4pw, GCRY_MD_MD4, 0); gcry_md_write(MD4pw, pw, 2 * len); memcpy (ntbuffer, gcry_md_read (MD4pw, 0), MD4_DIGEST_LENGTH); gcry_md_close(MD4pw); #elif defined(USE_NSS) || defined(USE_OS400CRYPTO) Curl_md4it(ntbuffer, pw, 2 * len); #elif defined(USE_DARWINSSL) (void)CC_MD4(pw, (CC_LONG)(2 * len), ntbuffer); #elif defined(USE_WIN32_CRYPTO) HCRYPTPROV hprov; if(CryptAcquireContext(&hprov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) { HCRYPTHASH hhash; if(CryptCreateHash(hprov, CALG_MD4, 0, 0, &hhash)) { DWORD length = 16; CryptHashData(hhash, pw, (unsigned int)len * 2, 0); CryptGetHashParam(hhash, HP_HASHVAL, ntbuffer, &length, 0); CryptDestroyHash(hhash); } CryptReleaseContext(hprov, 0); } #endif memset(ntbuffer + 16, 0, 21 - 16); } free(pw); return CURLE_OK; } #if USE_NTLM_V2 && !defined(USE_WINDOWS_SSPI) /* This returns the HMAC MD5 digest */ CURLcode Curl_hmac_md5(const unsigned char *key, unsigned int keylen, const unsigned char *data, unsigned int datalen, unsigned char *output) { HMAC_context *ctxt = Curl_HMAC_init(Curl_HMAC_MD5, key, keylen); if(!ctxt) return CURLE_OUT_OF_MEMORY; /* Update the digest with the given challenge */ Curl_HMAC_update(ctxt, data, datalen); /* Finalise the digest */ Curl_HMAC_final(ctxt, output); return CURLE_OK; } /* This creates the NTLMv2 hash by using NTLM hash as the key and Unicode * (uppercase UserName + Domain) as the data */ CURLcode Curl_ntlm_core_mk_ntlmv2_hash(const char *user, size_t userlen, const char *domain, size_t domlen, unsigned char *ntlmhash, unsigned char *ntlmv2hash) { /* Unicode representation */ size_t identity_len = (userlen + domlen) * 2; unsigned char *identity = malloc(identity_len); CURLcode result = CURLE_OK; if(!identity) return CURLE_OUT_OF_MEMORY; ascii_uppercase_to_unicode_le(identity, user, userlen); ascii_to_unicode_le(identity + (userlen << 1), domain, domlen); result = Curl_hmac_md5(ntlmhash, 16, identity, curlx_uztoui(identity_len), ntlmv2hash); free(identity); return result; } /* * Curl_ntlm_core_mk_ntlmv2_resp() * * This creates the NTLMv2 response as set in the ntlm type-3 message. * * Parameters: * * ntlmv2hash [in] - The ntlmv2 hash (16 bytes) * challenge_client [in] - The client nonce (8 bytes) * ntlm [in] - The ntlm data struct being used to read TargetInfo and Server challenge received in the type-2 message * ntresp [out] - The address where a pointer to newly allocated * memory holding the NTLMv2 response. * ntresp_len [out] - The length of the output message. * * Returns CURLE_OK on success. */ CURLcode Curl_ntlm_core_mk_ntlmv2_resp(unsigned char *ntlmv2hash, unsigned char *challenge_client, struct ntlmdata *ntlm, unsigned char **ntresp, unsigned int *ntresp_len) { /* NTLMv2 response structure : ------------------------------------------------------------------------------ 0 HMAC MD5 16 bytes ------BLOB-------------------------------------------------------------------- 16 Signature 0x01010000 20 Reserved long (0x00000000) 24 Timestamp LE, 64-bit signed value representing the number of tenths of a microsecond since January 1, 1601. 32 Client Nonce 8 bytes 40 Unknown 4 bytes 44 Target Info N bytes (from the type-2 message) 44+N Unknown 4 bytes ------------------------------------------------------------------------------ */ unsigned int len = 0; unsigned char *ptr = NULL; unsigned char hmac_output[NTLM_HMAC_MD5_LEN]; curl_off_t tw; CURLcode result = CURLE_OK; #if CURL_SIZEOF_CURL_OFF_T < 8 #error "this section needs 64bit support to work" #endif /* Calculate the timestamp */ #ifdef DEBUGBUILD char *force_timestamp = getenv("CURL_FORCETIME"); if(force_timestamp) tw = CURL_OFF_T_C(11644473600) * 10000000; else #endif tw = ((curl_off_t)time(NULL) + CURL_OFF_T_C(11644473600)) * 10000000; /* Calculate the response len */ len = NTLM_HMAC_MD5_LEN + NTLMv2_BLOB_LEN; /* Allocate the response */ ptr = malloc(len); if(!ptr) return CURLE_OUT_OF_MEMORY; memset(ptr, 0, len); /* Create the BLOB structure */ snprintf((char *)ptr + NTLM_HMAC_MD5_LEN, NTLMv2_BLOB_LEN, NTLMv2_BLOB_SIGNATURE "%c%c%c%c", /* Reserved = 0 */ 0, 0, 0, 0); Curl_write64_le(tw, ptr + 24); memcpy(ptr + 32, challenge_client, 8); memcpy(ptr + 44, ntlm->target_info, ntlm->target_info_len); /* Concatenate the Type 2 challenge with the BLOB and do HMAC MD5 */ memcpy(ptr + 8, &ntlm->nonce[0], 8); result = Curl_hmac_md5(ntlmv2hash, NTLM_HMAC_MD5_LEN, ptr + 8, NTLMv2_BLOB_LEN + 8, hmac_output); if(result) { free(ptr); return result; } /* Concatenate the HMAC MD5 output with the BLOB */ memcpy(ptr, hmac_output, NTLM_HMAC_MD5_LEN); /* Return the response */ *ntresp = ptr; *ntresp_len = len; return result; } /* * Curl_ntlm_core_mk_lmv2_resp() * * This creates the LMv2 response as used in the ntlm type-3 message. * * Parameters: * * ntlmv2hash [in] - The ntlmv2 hash (16 bytes) * challenge_client [in] - The client nonce (8 bytes) * challenge_client [in] - The server challenge (8 bytes) * lmresp [out] - The LMv2 response (24 bytes) * * Returns CURLE_OK on success. */ CURLcode Curl_ntlm_core_mk_lmv2_resp(unsigned char *ntlmv2hash, unsigned char *challenge_client, unsigned char *challenge_server, unsigned char *lmresp) { unsigned char data[16]; unsigned char hmac_output[16]; CURLcode result = CURLE_OK; memcpy(&data[0], challenge_server, 8); memcpy(&data[8], challenge_client, 8); result = Curl_hmac_md5(ntlmv2hash, 16, &data[0], 16, hmac_output); if(result) return result; /* Concatenate the HMAC MD5 output with the client nonce */ memcpy(lmresp, hmac_output, 16); memcpy(lmresp+16, challenge_client, 8); return result; } #endif /* USE_NTLM_V2 && !USE_WINDOWS_SSPI */ #endif /* USE_NTRESPONSES */ #endif /* !USE_WINDOWS_SSPI || USE_WIN32_CRYPTO */ #endif /* USE_NTLM */