/*    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); 	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, (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. */ 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 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]){	char passwd[130];	memset(passwd,'\0',130);	safe_strcpy( passwd, pwd, sizeof(passwd)-1);	/* Calculate the MD4 hash (NT compatible) of the password */	memset(nt_p16, '\0', 16);	E_md4hash((uchar *)passwd, nt_p16);#ifdef DEBUG_PASSWORD	DEBUG(100,("nt_lm_owf_gen: pwd, nt#\n"));	dump_data(120, passwd, strlen(passwd));	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);#ifdef DEBUG_PASSWORD	DEBUG(100,("nt_lm_owf_gen: pwd, lm#\n"));	dump_data(120, passwd, strlen(passwd));	dump_data(100, (char *)p16, 16);#endif	/* clear out local copy of user's password (just being paranoid). */	memset(passwd, '\0', sizeof(passwd));}/* Does the des encryption from the NT or LM MD4 hash. */void SMBOWFencrypt(uchar passwd[16], uchar *c8, uchar p24[24]){	uchar p21[21]; 	memset(p21,'\0',21); 	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]){	uchar p21[21]; 	memset(p21,'\0',21);	memcpy(p21, passwd, 8);    	memset(p21 + 8, 0xbd, 8);    	E_P24(p21, ntlmchalresp, p24);#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, (char *)p24, 24);#endif}/* 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);    	SMBOWFencrypt(p21, c8, p24);#ifdef DEBUG_PASSWORD	DEBUG(100,("SMBNTencrypt: nt#, challenge, response\n"));	dump_data(100, (char *)p21, 16);	dump_data(100, (char *)c8, 8);	dump_data(100, (char *)p24, 24);#endif}BOOL make_oem_passwd_hash(char data[516], const char *passwd, uchar old_pw_hash[16], BOOL unicode){	int new_pw_len = strlen(passwd) * (unicode ? 2 : 1);	if (new_pw_len > 512)	{		DEBUG(0,("make_oem_passwd_hash: new password is too long.\n"));		return False;	}	/*	 * Now setup the data area.	 * We need to generate a random fill	 * for this area to make it harder to	 * decrypt. JRA.	 */	generate_random_buffer((unsigned char *)data, 516, False);	if (unicode)	{		struni2( &data[512 - new_pw_len], passwd);	}	else	{		fstrcpy( &data[512 - new_pw_len], passwd);	}	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);	return True;}