/*
- Unix SMB/Netbios implementation.
- Version 1.9.
+ 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.
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
*/
#include "includes.h"
-
-extern int DEBUGLEVEL;
-
#include "byteorder.h"
/*
This implements the X/Open SMB password encryption
- It takes a password, a 8 byte "crypt key" and puts 24 bytes of
- encrypted password into p24 */
-void SMBencrypt(uchar *passwd, uchar *c8, uchar *p24)
+ It takes a password ('unix' string), a 8 byte "crypt key"
+ and puts 24 bytes of encrypted password into p24 */
+void SMBencrypt(const char *passwd, const uchar *c8, uchar p24[24])
{
- uchar p14[15], p21[21];
+ uchar p21[21];
memset(p21,'\0',21);
- memset(p14,'\0',14);
- StrnCpy((char *)p14,(char *)passwd,14);
-
- strupper((char *)p14);
- E_P16(p14, p21);
+ E_deshash(passwd, p21);
SMBOWFencrypt(p21, c8, p24);
#ifdef DEBUG_PASSWORD
DEBUG(100,("SMBencrypt: lm#, challenge, response\n"));
dump_data(100, (char *)p21, 16);
- dump_data(100, (char *)c8, 8);
+ dump_data(100, (const char *)c8, 8);
dump_data(100, (char *)p24, 24);
#endif
}
-/* Routines for Windows NT MD4 Hash functions. */
-static int _my_wcslen(int16 *str)
-{
- int len = 0;
- while(*str++ != 0)
- len++;
- return len;
-}
-
-/*
- * Convert a string into an NT UNICODE string.
- * Note that regardless of processor type
- * this must be in intel (little-endian)
- * format.
- */
-
-static int _my_mbstowcs(int16 *dst, uchar *src, int len)
-{
- int i;
- int16 val;
-
- for(i = 0; i < len; i++) {
- val = *src;
- SSVAL(dst,0,val);
- dst++;
- src++;
- if(val == 0)
- break;
- }
- return i;
-}
-
-/*
+/**
* 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(uchar *passwd, uchar *p16)
+void E_md4hash(const char *passwd, uchar p16[16])
{
int len;
- int16 wpwd[129];
+ smb_ucs2_t wpwd[129];
- /* Password cannot be longer than 128 characters */
- len = strlen((char *)passwd);
- if(len > 128)
- len = 128;
- /* Password must be converted to NT unicode */
- _my_mbstowcs(wpwd, passwd, len);
- wpwd[len] = 0; /* Ensure string is null terminated */
+ /* Password must be converted to NT unicode - null terminated. */
+ push_ucs2(NULL, wpwd, (const char *)passwd, 256, STR_UNICODE|STR_NOALIGN|STR_TERMINATE);
/* Calculate length in bytes */
- len = _my_wcslen(wpwd) * sizeof(int16);
+ len = strlen_w(wpwd) * sizeof(int16);
mdfour(p16, (unsigned char *)wpwd, len);
+ ZERO_STRUCT(wpwd);
}
-/* Does both the NT and LM owfs of a user's password */
-void nt_lm_owf_gen(char *pwd, uchar nt_p16[16], uchar p16[16])
+/**
+ * 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
+ */
+
+void E_deshash(const char *passwd, uchar p16[16])
{
- char passwd[514];
+ uchar dospwd[15]; /* Password must not be > 14 chars long. */
+ ZERO_STRUCT(dospwd);
+ ZERO_STRUCTP(p16);
+
+ /* Password must be converted to DOS charset - null terminated, uppercase. */
+ push_ascii(dospwd, (const char *)passwd, sizeof(dospwd), STR_UPPER|STR_TERMINATE);
- memset(passwd,'\0',514);
- safe_strcpy( passwd, pwd, sizeof(passwd)-1);
+ E_P16(dospwd, p16);
+ ZERO_STRUCT(dospwd);
+}
+
+/**
+ * Creates the MD4 and DES (LM) Hash of the users password.
+ * MD4 is of the NT Unicode, DES is of the DOS UPPERCASE password.
+ * @param passwd password in 'unix' charset.
+ * @param nt_p16 return password hashed with md4, caller allocated 16 byte buffer
+ * @param p16 return password hashed with des, caller allocated 16 byte buffer
+ */
+
+/* Does both the NT and LM owfs of a user's password */
+void nt_lm_owf_gen(const char *pwd, uchar nt_p16[16], uchar p16[16])
+{
/* Calculate the MD4 hash (NT compatible) of the password */
memset(nt_p16, '\0', 16);
- E_md4hash((uchar *)passwd, nt_p16);
+ E_md4hash(pwd, nt_p16);
#ifdef DEBUG_PASSWORD
DEBUG(100,("nt_lm_owf_gen: pwd, nt#\n"));
- dump_data(120, passwd, strlen(passwd));
+ dump_data(120, pwd, strlen(pwd));
dump_data(100, (char *)nt_p16, 16);
#endif
- /* Mangle the passwords into Lanman format */
- passwd[14] = '\0';
- strupper(passwd);
-
- /* Calculate the SMB (lanman) hash functions of the password */
-
- memset(p16, '\0', 16);
- E_P16((uchar *) passwd, (uchar *)p16);
+ E_deshash(pwd, (uchar *)p16);
#ifdef DEBUG_PASSWORD
DEBUG(100,("nt_lm_owf_gen: pwd, lm#\n"));
- dump_data(120, passwd, strlen(passwd));
+ dump_data(120, pwd, strlen(pwd));
dump_data(100, (char *)p16, 16);
#endif
- /* clear out local copy of user's password (just being paranoid). */
- memset(passwd, '\0', sizeof(passwd));
+}
+
+/* Does both the NTLMv2 owfs of a user's password */
+BOOL ntv2_owf_gen(const uchar owf[16],
+ const char *user_in, const char *domain_in, uchar kr_buf[16])
+{
+ smb_ucs2_t *user;
+ smb_ucs2_t *domain;
+
+ int user_byte_len;
+ int domain_byte_len;
+
+ HMACMD5Context ctx;
+
+ user_byte_len = push_ucs2_allocate(&user, user_in);
+ if (user_byte_len < 0) {
+ DEBUG(0, ("push_uss2_allocate() for user returned %d (probably malloc() failure)\n", user_byte_len));
+ return False;
+ }
+
+ domain_byte_len = push_ucs2_allocate(&domain, domain_in);
+ if (domain_byte_len < 0) {
+ DEBUG(0, ("push_uss2_allocate() for domain returned %d (probably malloc() failure)\n", user_byte_len));
+ return False;
+ }
+
+ strupper_w(user);
+ strupper_w(domain);
+
+ /* We don't want null termination */
+ user_byte_len = user_byte_len - 2;
+ domain_byte_len = domain_byte_len - 2;
+
+ SMB_ASSERT(user_byte_len >= 0);
+ SMB_ASSERT(domain_byte_len >= 0);
+
+ hmac_md5_init_limK_to_64(owf, 16, &ctx);
+ hmac_md5_update((const unsigned char *)user, user_byte_len, &ctx);
+ hmac_md5_update((const unsigned char *)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, (const char *)user, user_byte_len);
+ dump_data(100, (const char *)domain, domain_byte_len);
+ dump_data(100, owf, 16);
+ dump_data(100, kr_buf, 16);
+#endif
+
+ SAFE_FREE(user);
+ SAFE_FREE(domain);
+ return True;
}
/* Does the des encryption from the NT or LM MD4 hash. */
-void SMBOWFencrypt(uchar passwd[16], uchar *c8, uchar p24[24])
+void SMBOWFencrypt(const uchar passwd[16], const uchar *c8, uchar p24[24])
{
uchar p21[21];
-
- memset(p21,'\0',21);
+
+ ZERO_STRUCT(p21);
memcpy(p21, passwd, 16);
E_P24(p21, c8, p24);
}
/* Does the des encryption from the FIRST 8 BYTES of the NT or LM MD4 hash. */
-void NTLMSSPOWFencrypt(uchar passwd[8], uchar *ntlmchalresp, uchar p24[24])
+void NTLMSSPOWFencrypt(const uchar passwd[8], const uchar *ntlmchalresp, uchar p24[24])
{
uchar p21[21];
#ifdef DEBUG_PASSWORD
DEBUG(100,("NTLMSSPOWFencrypt: p21, c8, p24\n"));
dump_data(100, (char *)p21, 21);
- dump_data(100, (char *)ntlmchalresp, 8);
+ dump_data(100, (const char *)ntlmchalresp, 8);
dump_data(100, (char *)p24, 24);
#endif
}
/* Does the NT MD4 hash then des encryption. */
-void SMBNTencrypt(uchar *passwd, uchar *c8, uchar *p24)
+void SMBNTencrypt(const char *passwd, uchar *c8, uchar *p24)
{
uchar p21[21];
* decrypt. JRA.
*/
generate_random_buffer((unsigned char *)data, 516, False);
- if (unicode)
- {
- /* Note that passwd should be in DOS oem character set. */
- dos_struni2( &data[512 - new_pw_len], passwd, 512);
- }
- else
- {
- /* Note that passwd should be in DOS oem character set. */
- fstrcpy( &data[512 - new_pw_len], passwd);
- }
+ push_string(NULL, &data[512 - new_pw_len], passwd, new_pw_len,
+ STR_NOALIGN | (unicode?STR_UNICODE:STR_ASCII));
SIVAL(data, 512, new_pw_len);
#ifdef DEBUG_PASSWORD
DEBUG(100,("make_oem_passwd_hash\n"));
dump_data(100, data, 516);
#endif
- SamOEMhash( (unsigned char *)data, (unsigned char *)old_pw_hash, True);
+ SamOEMhash( (unsigned char *)data, (unsigned char *)old_pw_hash, 516);
+
+ return True;
+}
+
+/* Does the md5 encryption from the NT hash for NTLMv2. */
+void SMBOWFencrypt_ntv2(const uchar kr[16],
+ const DATA_BLOB srv_chal,
+ const DATA_BLOB cli_chal,
+ uchar 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(cli_chal.data, cli_chal.length, &ctx);
+ hmac_md5_final(resp_buf, &ctx);
+
+#ifdef DEBUG_PASSWORD
+ DEBUG(100, ("SMBOWFencrypt_ntv2: srv_chal, cli_chal, resp_buf\n"));
+ dump_data(100, srv_chal.data, srv_chal.length);
+ dump_data(100, cli_chal.data, cli_chal.length);
+ dump_data(100, resp_buf, 16);
+#endif
+}
+
+void SMBsesskeygen_ntv2(const uchar kr[16],
+ const uchar * nt_resp, uint8 sess_key[16])
+{
+ HMACMD5Context ctx;
+
+ hmac_md5_init_limK_to_64(kr, 16, &ctx);
+ hmac_md5_update(nt_resp, 16, &ctx);
+ hmac_md5_final((unsigned char *)sess_key, &ctx);
+
+#ifdef DEBUG_PASSWORD
+ DEBUG(100, ("SMBsesskeygen_ntv2:\n"));
+ dump_data(100, sess_key, 16);
+#endif
+}
+
+void SMBsesskeygen_ntv1(const uchar kr[16],
+ const uchar * nt_resp, uint8 sess_key[16])
+{
+ mdfour((unsigned char *)sess_key, kr, 16);
+
+#ifdef DEBUG_PASSWORD
+ DEBUG(100, ("SMBsesskeygen_ntv1:\n"));
+ dump_data(100, sess_key, 16);
+#endif
+}
+
+/***********************************************************
+ encode a password buffer. The caller gets to figure out
+ what to put in it.
+************************************************************/
+BOOL encode_pw_buffer(char buffer[516], char *new_pw, int new_pw_length)
+{
+ generate_random_buffer((unsigned char *)buffer, 516, True);
+
+ memcpy(&buffer[512 - new_pw_length], new_pw, new_pw_length);
+
+ /*
+ * The length of the new password is in the last 4 bytes of
+ * the data buffer.
+ */
+ SIVAL(buffer, 512, new_pw_length);
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(char buffer[516], char *new_pwrd,
+BOOL decode_pw_buffer(char in_buffer[516], char *new_pwrd,
int new_pwrd_size, uint32 *new_pw_len)
{
- int uni_pw_len=0;
- char *pw;
+ int byte_len=0;
+
/*
Warning !!! : This function is called from some rpc call.
The password IN the buffer is a UNICODE string.
If you reuse that code somewhere else check first.
*/
- ZERO_STRUCTP(new_pwrd);
-
- /*
- * The length of the new password is in the last 4 bytes of
- * the data buffer.
- */
+ /* The length of the new password is in the last 4 bytes of the data buffer. */
- *new_pw_len = IVAL(buffer, 512);
+ byte_len = IVAL(in_buffer, 512);
#ifdef DEBUG_PASSWORD
- dump_data(100, buffer, 516);
+ dump_data(100, in_buffer, 516);
#endif
- if (((int)*new_pw_len) < 0 || (*new_pw_len) > new_pwrd_size - 1) {
- DEBUG(0, ("decode_pw_buffer: incorrect password length (%d).\n", (*new_pw_len)));
+ /* Password cannot be longer than 128 characters */
+ if ( (byte_len < 0) || (byte_len > new_pwrd_size - 1)) {
+ DEBUG(0, ("decode_pw_buffer: incorrect password length (%d).\n", byte_len));
+ DEBUG(0, ("decode_pw_buffer: check that 'encrypt passwords = yes'\n"));
return False;
}
- uni_pw_len = *new_pw_len;
- *new_pw_len /= 2;
- pw = dos_unistrn2((uint16 *)(&buffer[512 - uni_pw_len]), uni_pw_len);
- memcpy(new_pwrd, pw, *new_pw_len);
+ /* decode into the return buffer. Buffer must be a pstring */
+ *new_pw_len = pull_string(NULL, new_pwrd, &in_buffer[512 - byte_len], new_pwrd_size, byte_len, STR_UNICODE);
#ifdef DEBUG_PASSWORD
- dump_data(100, new_pwrd, (*new_pw_len));
+ DEBUG(100,("decode_pw_buffer: new_pwrd: "));
+ dump_data(100, (char *)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;
}
+/***********************************************************
+ SMB signing - setup the MAC key.
+************************************************************/
+
+void cli_calculate_mac_key(struct cli_state *cli, const char *ntpasswd, const uchar resp[24])
+{
+ /* Get first 16 bytes. */
+ E_md4hash(ntpasswd,&cli->sign_info.mac_key[0]);
+ memcpy(&cli->sign_info.mac_key[16],resp,24);
+ cli->sign_info.mac_key_len = 40;
+ cli->sign_info.use_smb_signing = True;
+
+ /* These calls are INCONPATIBLE with SMB signing */
+ cli->readbraw_supported = False;
+ cli->writebraw_supported = False;
+
+ /* Reset the sequence number in case we had a previous (aborted) attempt */
+ cli->sign_info.send_seq_num = 0;
+}
+
+/***********************************************************
+ SMB signing - calculate a MAC to send.
+************************************************************/
+
+void cli_caclulate_sign_mac(struct cli_state *cli)
+{
+ unsigned char calc_md5_mac[16];
+ struct MD5Context md5_ctx;
+
+ if (cli->sign_info.temp_smb_signing) {
+ memcpy(&cli->outbuf[smb_ss_field], "SignRequest", 8);
+ cli->sign_info.temp_smb_signing = False;
+ return;
+ }
+
+ if (!cli->sign_info.use_smb_signing) {
+ return;
+ }
+
+ /*
+ * Firstly put the sequence number into the first 4 bytes.
+ * and zero out the next 4 bytes.
+ */
+ SIVAL(cli->outbuf, smb_ss_field, cli->sign_info.send_seq_num);
+ SIVAL(cli->outbuf, smb_ss_field + 4, 0);
+
+ /* Calculate the 16 byte MAC and place first 8 bytes into the field. */
+ MD5Init(&md5_ctx);
+ MD5Update(&md5_ctx, cli->sign_info.mac_key, cli->sign_info.mac_key_len);
+ MD5Update(&md5_ctx, cli->outbuf + 4, smb_len(cli->outbuf));
+ MD5Final(calc_md5_mac, &md5_ctx);
+
+ memcpy(&cli->outbuf[smb_ss_field], calc_md5_mac, 8);
+/* cli->outbuf[smb_ss_field+2]=0;
+ Uncomment this to test if the remote server actually verifies signitures...*/
+ cli->sign_info.send_seq_num++;
+ cli->sign_info.reply_seq_num = cli->sign_info.send_seq_num;
+ cli->sign_info.send_seq_num++;
+}
git.samba.org / samba.git / blobdiff