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- /*
- Unix SMB/Netbios implementation.
- Version 1.9.
- SMB parameters and setup
- Copyright (C) Andrew Tridgell 1992-1998
- Modified by Jeremy Allison 1995.
-
- 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"
-
- 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)
- {
- uchar p14[15], p21[21];
-
- memset(p21,'\0',21);
- memset(p14,'\0',14);
- StrnCpy((char *)p14,(char *)passwd,14);
-
- strupper((char *)p14);
- E_P16(p14, p21);
- E_P24(p21, c8, p24);
- }
-
- /* 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.
- */
-
- void E_md4hash(uchar *passwd, uchar *p16)
- {
- int len;
- int16 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 */
- /* Calculate length in bytes */
- len = _my_wcslen(wpwd) * sizeof(int16);
-
- mdfour(p16, (unsigned char *)wpwd, len);
- }
-
- /* Does the NT MD4 hash then des encryption. */
-
- void SMBNTencrypt(uchar *passwd, uchar *c8, uchar *p24)
- {
- uchar p21[21];
-
- memset(p21,'\0',21);
-
- E_md4hash(passwd, p21);
- E_P24(p21, c8, p24);
- }
-
- /* Does both the NT and LM owfs of a user's password */
-
- void nt_lm_owf_gen(char *pwd, char *nt_p16, char *p16)
- {
- char passwd[130];
- StrnCpy(passwd, pwd, sizeof(passwd)-1);
-
- /* Calculate the MD4 hash (NT compatible) of the password */
- memset(nt_p16, '\0', 16);
- E_md4hash((uchar *)passwd, (uchar *)nt_p16);
-
- /* 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);
-
- /* clear out local copy of user's password (just being paranoid). */
- bzero(passwd, sizeof(passwd));
- }
-
-