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-rw-r--r--source4/libcli/util/smbencrypt.c504
1 files changed, 0 insertions, 504 deletions
diff --git a/source4/libcli/util/smbencrypt.c b/source4/libcli/util/smbencrypt.c
deleted file mode 100644
index 7e2890272c..0000000000
--- a/source4/libcli/util/smbencrypt.c
+++ /dev/null
@@ -1,504 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
- SMB parameters and setup
- Copyright (C) Andrew Tridgell 1992-1998
- Modified by Jeremy Allison 1995.
- Copyright (C) Jeremy Allison 1995-2000.
- Copyright (C) Luke Kennethc Casson Leighton 1996-2000.
- Copyright (C) Andrew Bartlett <abartlet@samba.org> 2002-2003
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include "includes.h"
-#include "system/time.h"
-#include "auth/auth.h"
-#include "lib/crypto/crypto.h"
-
-/*
- This implements the X/Open SMB password encryption
- It takes a password ('unix' string), a 8 byte "crypt key"
- and puts 24 bytes of encrypted password into p24
-
- Returns False if password must have been truncated to create LM hash
-*/
-BOOL SMBencrypt(const char *passwd, const uint8_t *c8, uint8_t p24[24])
-{
- BOOL ret;
- uint8_t p21[21];
-
- memset(p21,'\0',21);
- ret = E_deshash(passwd, p21);
-
- SMBOWFencrypt(p21, c8, p24);
-
-#ifdef DEBUG_PASSWORD
- DEBUG(100,("SMBencrypt: lm#, challenge, response\n"));
- dump_data(100, p21, 16);
- dump_data(100, c8, 8);
- dump_data(100, p24, 24);
-#endif
-
- return ret;
-}
-
-/**
- * Creates the MD4 Hash of the users password in NT UNICODE.
- * @param passwd password in 'unix' charset.
- * @param p16 return password hashed with md4, caller allocated 16 byte buffer
- */
-
-void E_md4hash(const char *passwd, uint8_t p16[16])
-{
- int len;
- void *wpwd;
-
- len = push_ucs2_talloc(NULL, &wpwd, passwd);
- SMB_ASSERT(len >= 2);
-
- len -= 2;
- mdfour(p16, wpwd, len);
-
- talloc_free(wpwd);
-}
-
-/**
- * Creates the DES forward-only Hash of the users password in DOS ASCII charset
- * @param passwd password in 'unix' charset.
- * @param p16 return password hashed with DES, caller allocated 16 byte buffer
- * @return False if password was > 14 characters, and therefore may be incorrect, otherwise True
- * @note p16 is filled in regardless
- */
-
-BOOL E_deshash(const char *passwd, uint8_t p16[16])
-{
- BOOL ret = True;
- fstring dospwd;
- ZERO_STRUCT(dospwd);
-
- /* Password must be converted to DOS charset - null terminated, uppercase. */
- push_ascii(dospwd, passwd, sizeof(dospwd), STR_UPPER|STR_TERMINATE);
-
- /* Only the fisrt 14 chars are considered, password need not be null terminated. */
- E_P16((const uint8_t *)dospwd, p16);
-
- if (strlen(dospwd) > 14) {
- ret = False;
- }
-
- ZERO_STRUCT(dospwd);
-
- return ret;
-}
-
-/* Does both the NTLMv2 owfs of a user's password */
-BOOL ntv2_owf_gen(const uint8_t owf[16],
- const char *user_in, const char *domain_in,
- BOOL upper_case_domain, /* Transform the domain into UPPER case */
- uint8_t kr_buf[16])
-{
- void *user;
- void *domain;
- size_t user_byte_len;
- size_t domain_byte_len;
-
- HMACMD5Context ctx;
- TALLOC_CTX *mem_ctx = talloc_init("ntv2_owf_gen for %s\\%s", domain_in, user_in);
- if (!mem_ctx) {
- return False;
- }
-
- user_in = strupper_talloc(mem_ctx, user_in);
- if (user_in == NULL) {
- talloc_free(mem_ctx);
- return False;
- }
-
- if (upper_case_domain) {
- domain_in = strupper_talloc(mem_ctx, domain_in);
- if (domain_in == NULL) {
- talloc_free(mem_ctx);
- return False;
- }
- }
-
- user_byte_len = push_ucs2_talloc(mem_ctx, &user, user_in);
- if (user_byte_len == (ssize_t)-1) {
- DEBUG(0, ("push_uss2_talloc() for user returned -1 (probably talloc() failure)\n"));
- talloc_free(mem_ctx);
- return False;
- }
-
- domain_byte_len = push_ucs2_talloc(mem_ctx, &domain, domain_in);
- if (domain_byte_len == (ssize_t)-1) {
- DEBUG(0, ("push_ucs2_talloc() for domain returned -1 (probably talloc() failure)\n"));
- talloc_free(mem_ctx);
- return False;
- }
-
- SMB_ASSERT(user_byte_len >= 2);
- SMB_ASSERT(domain_byte_len >= 2);
-
- /* We don't want null termination */
- user_byte_len = user_byte_len - 2;
- domain_byte_len = domain_byte_len - 2;
-
- hmac_md5_init_limK_to_64(owf, 16, &ctx);
- hmac_md5_update(user, user_byte_len, &ctx);
- hmac_md5_update(domain, domain_byte_len, &ctx);
- hmac_md5_final(kr_buf, &ctx);
-
-#ifdef DEBUG_PASSWORD
- DEBUG(100, ("ntv2_owf_gen: user, domain, owfkey, kr\n"));
- dump_data(100, user, user_byte_len);
- dump_data(100, domain, domain_byte_len);
- dump_data(100, owf, 16);
- dump_data(100, kr_buf, 16);
-#endif
-
- talloc_free(mem_ctx);
- return True;
-}
-
-/* Does the des encryption from the NT or LM MD4 hash. */
-void SMBOWFencrypt(const uint8_t passwd[16], const uint8_t *c8, uint8_t p24[24])
-{
- uint8_t p21[21];
-
- ZERO_STRUCT(p21);
-
- memcpy(p21, passwd, 16);
- E_P24(p21, c8, p24);
-}
-
-/* Does the NT MD4 hash then des encryption. */
-
-void SMBNTencrypt(const char *passwd, uint8_t *c8, uint8_t *p24)
-{
- uint8_t p21[21];
-
- memset(p21,'\0',21);
-
- E_md4hash(passwd, p21);
- SMBOWFencrypt(p21, c8, p24);
-
-#ifdef DEBUG_PASSWORD
- DEBUG(100,("SMBNTencrypt: nt#, challenge, response\n"));
- dump_data(100, p21, 16);
- dump_data(100, c8, 8);
- dump_data(100, p24, 24);
-#endif
-}
-
-/* Does the md5 encryption from the Key Response for NTLMv2. */
-void SMBOWFencrypt_ntv2(const uint8_t kr[16],
- const DATA_BLOB *srv_chal,
- const DATA_BLOB *smbcli_chal,
- uint8_t resp_buf[16])
-{
- HMACMD5Context ctx;
-
- hmac_md5_init_limK_to_64(kr, 16, &ctx);
- hmac_md5_update(srv_chal->data, srv_chal->length, &ctx);
- hmac_md5_update(smbcli_chal->data, smbcli_chal->length, &ctx);
- hmac_md5_final(resp_buf, &ctx);
-
-#ifdef DEBUG_PASSWORD
- DEBUG(100, ("SMBOWFencrypt_ntv2: srv_chal, smbcli_chal, resp_buf\n"));
- dump_data(100, srv_chal->data, srv_chal->length);
- dump_data(100, smbcli_chal->data, smbcli_chal->length);
- dump_data(100, resp_buf, 16);
-#endif
-}
-
-void SMBsesskeygen_ntv2(const uint8_t kr[16],
- const uint8_t * nt_resp, uint8_t sess_key[16])
-{
- /* a very nice, 128 bit, variable session key */
-
- HMACMD5Context ctx;
-
- hmac_md5_init_limK_to_64(kr, 16, &ctx);
- hmac_md5_update(nt_resp, 16, &ctx);
- hmac_md5_final((uint8_t *)sess_key, &ctx);
-
-#ifdef DEBUG_PASSWORD
- DEBUG(100, ("SMBsesskeygen_ntv2:\n"));
- dump_data(100, sess_key, 16);
-#endif
-}
-
-void SMBsesskeygen_ntv1(const uint8_t kr[16], uint8_t sess_key[16])
-{
- /* yes, this session key does not change - yes, this
- is a problem - but it is 128 bits */
-
- mdfour((uint8_t *)sess_key, kr, 16);
-
-#ifdef DEBUG_PASSWORD
- DEBUG(100, ("SMBsesskeygen_ntv1:\n"));
- dump_data(100, sess_key, 16);
-#endif
-}
-
-void SMBsesskeygen_lm_sess_key(const uint8_t lm_hash[16],
- const uint8_t lm_resp[24], /* only uses 8 */
- uint8_t sess_key[16])
-{
- /* Calculate the LM session key (effective length 40 bits,
- but changes with each session) */
- uint8_t p24[24];
- uint8_t p21[21];
-
- memset(p21,'\0',21);
- memcpy(p21, lm_hash, 8);
- memset(p21 + 8, 0xbd, 8);
-
- E_P24(p21, lm_resp, p24);
-
- memcpy(sess_key, p24, 16);
-
-#ifdef DEBUG_PASSWORD
- DEBUG(100, ("SMBsesskeygen_lm_sess_key: \n"));
- dump_data(100, sess_key, 16);
-#endif
-}
-
-DATA_BLOB NTLMv2_generate_names_blob(TALLOC_CTX *mem_ctx,
- const char *hostname,
- const char *domain)
-{
- DATA_BLOB names_blob = data_blob_talloc(mem_ctx, NULL, 0);
-
- msrpc_gen(mem_ctx, &names_blob, "aaa",
- NTLMSSP_NAME_TYPE_DOMAIN, domain,
- NTLMSSP_NAME_TYPE_SERVER, hostname,
- 0, "");
- return names_blob;
-}
-
-static DATA_BLOB NTLMv2_generate_client_data(TALLOC_CTX *mem_ctx, const DATA_BLOB *names_blob)
-{
- uint8_t client_chal[8];
- DATA_BLOB response = data_blob(NULL, 0);
- uint8_t long_date[8];
- NTTIME nttime;
-
- unix_to_nt_time(&nttime, time(NULL));
-
- generate_random_buffer(client_chal, sizeof(client_chal));
-
- push_nttime(long_date, 0, nttime);
-
- /* See http://www.ubiqx.org/cifs/SMB.html#SMB.8.5 */
-
- msrpc_gen(mem_ctx, &response, "ddbbdb",
- 0x00000101, /* Header */
- 0, /* 'Reserved' */
- long_date, 8, /* Timestamp */
- client_chal, 8, /* client challenge */
- 0, /* Unknown */
- names_blob->data, names_blob->length); /* End of name list */
-
- return response;
-}
-
-static DATA_BLOB NTLMv2_generate_response(const uint8_t ntlm_v2_hash[16],
- const DATA_BLOB *server_chal,
- const DATA_BLOB *names_blob)
-{
- uint8_t ntlmv2_response[16];
- DATA_BLOB ntlmv2_client_data;
- DATA_BLOB final_response;
-
- TALLOC_CTX *mem_ctx = talloc_init("NTLMv2_generate_response internal context");
-
- if (!mem_ctx) {
- return data_blob(NULL, 0);
- }
-
- /* NTLMv2 */
- /* generate some data to pass into the response function - including
- the hostname and domain name of the server */
- ntlmv2_client_data = NTLMv2_generate_client_data(mem_ctx, names_blob);
-
- /* Given that data, and the challenge from the server, generate a response */
- SMBOWFencrypt_ntv2(ntlm_v2_hash, server_chal, &ntlmv2_client_data, ntlmv2_response);
-
- final_response = data_blob(NULL, sizeof(ntlmv2_response) + ntlmv2_client_data.length);
-
- memcpy(final_response.data, ntlmv2_response, sizeof(ntlmv2_response));
-
- memcpy(final_response.data+sizeof(ntlmv2_response),
- ntlmv2_client_data.data, ntlmv2_client_data.length);
-
- talloc_free(mem_ctx);
-
- return final_response;
-}
-
-static DATA_BLOB LMv2_generate_response(const uint8_t ntlm_v2_hash[16],
- const DATA_BLOB *server_chal)
-{
- uint8_t lmv2_response[16];
- DATA_BLOB lmv2_client_data = data_blob(NULL, 8);
- DATA_BLOB final_response = data_blob(NULL, 24);
-
- /* LMv2 */
- /* client-supplied random data */
- generate_random_buffer(lmv2_client_data.data, lmv2_client_data.length);
-
- /* Given that data, and the challenge from the server, generate a response */
- SMBOWFencrypt_ntv2(ntlm_v2_hash, server_chal, &lmv2_client_data, lmv2_response);
- memcpy(final_response.data, lmv2_response, sizeof(lmv2_response));
-
- /* after the first 16 bytes is the random data we generated above,
- so the server can verify us with it */
- memcpy(final_response.data+sizeof(lmv2_response),
- lmv2_client_data.data, lmv2_client_data.length);
-
- data_blob_free(&lmv2_client_data);
-
- return final_response;
-}
-
-BOOL SMBNTLMv2encrypt_hash(const char *user, const char *domain, const uint8_t nt_hash[16],
- const DATA_BLOB *server_chal,
- const DATA_BLOB *names_blob,
- DATA_BLOB *lm_response, DATA_BLOB *nt_response,
- DATA_BLOB *lm_session_key, DATA_BLOB *user_session_key)
-{
- uint8_t ntlm_v2_hash[16];
-
- /* We don't use the NT# directly. Instead we use it mashed up with
- the username and domain.
- This prevents username swapping during the auth exchange
- */
- if (!ntv2_owf_gen(nt_hash, user, domain, True, ntlm_v2_hash)) {
- return False;
- }
-
- if (nt_response) {
- *nt_response = NTLMv2_generate_response(ntlm_v2_hash, server_chal,
- names_blob);
- if (user_session_key) {
- *user_session_key = data_blob(NULL, 16);
-
- /* The NTLMv2 calculations also provide a session key, for signing etc later */
- /* use only the first 16 bytes of nt_response for session key */
- SMBsesskeygen_ntv2(ntlm_v2_hash, nt_response->data, user_session_key->data);
- }
- }
-
- /* LMv2 */
-
- if (lm_response) {
- *lm_response = LMv2_generate_response(ntlm_v2_hash, server_chal);
- if (lm_session_key) {
- *lm_session_key = data_blob(NULL, 16);
-
- /* The NTLMv2 calculations also provide a session key, for signing etc later */
- /* use only the first 16 bytes of lm_response for session key */
- SMBsesskeygen_ntv2(ntlm_v2_hash, lm_response->data, lm_session_key->data);
- }
- }
-
- return True;
-}
-
-BOOL SMBNTLMv2encrypt(const char *user, const char *domain, const char *password,
- const DATA_BLOB *server_chal,
- const DATA_BLOB *names_blob,
- DATA_BLOB *lm_response, DATA_BLOB *nt_response,
- DATA_BLOB *lm_session_key, DATA_BLOB *user_session_key)
-{
- uint8_t nt_hash[16];
- E_md4hash(password, nt_hash);
-
- return SMBNTLMv2encrypt_hash(user, domain, nt_hash, server_chal, names_blob,
- lm_response, nt_response, lm_session_key, user_session_key);
-}
-
-/***********************************************************
- encode a password buffer with a unicode password. The buffer
- is filled with random data to make it harder to attack.
-************************************************************/
-BOOL encode_pw_buffer(uint8_t buffer[516], const char *password, int string_flags)
-{
- uint8_t new_pw[512];
- size_t new_pw_len;
-
- new_pw_len = push_string(new_pw,
- password,
- sizeof(new_pw), string_flags);
-
- memcpy(&buffer[512 - new_pw_len], new_pw, new_pw_len);
-
- generate_random_buffer(buffer, 512 - new_pw_len);
-
- /*
- * The length of the new password is in the last 4 bytes of
- * the data buffer.
- */
- SIVAL(buffer, 512, new_pw_len);
- ZERO_STRUCT(new_pw);
- return True;
-}
-
-
-/***********************************************************
- decode a password buffer
- *new_pw_len is the length in bytes of the possibly mulitbyte
- returned password including termination.
-************************************************************/
-BOOL decode_pw_buffer(uint8_t in_buffer[516], char *new_pwrd,
- int new_pwrd_size, uint32_t *new_pw_len,
- int string_flags)
-{
- int byte_len=0;
-
- /*
- Warning !!! : This function is called from some rpc call.
- The password IN the buffer may be a UNICODE string.
- The password IN new_pwrd is an ASCII string
- If you reuse that code somewhere else check first.
- */
-
- /* The length of the new password is in the last 4 bytes of the data buffer. */
-
- byte_len = IVAL(in_buffer, 512);
-
-#ifdef DEBUG_PASSWORD
- dump_data(100, in_buffer, 516);
-#endif
-
- /* Password cannot be longer than the size of the password buffer */
- if ( (byte_len < 0) || (byte_len > 512)) {
- return False;
- }
-
- /* decode into the return buffer. Buffer length supplied */
- *new_pw_len = pull_string(new_pwrd, &in_buffer[512 - byte_len], new_pwrd_size,
- byte_len, string_flags);
-
-#ifdef DEBUG_PASSWORD
- DEBUG(100,("decode_pw_buffer: new_pwrd: "));
- dump_data(100, (const uint8_t *)new_pwrd, *new_pw_len);
- DEBUG(100,("multibyte len:%d\n", *new_pw_len));
- DEBUG(100,("original char len:%d\n", byte_len/2));
-#endif
-
- return True;
-}
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