<?php /* $Id$ This code is part of LDAP Account Manager (http://www.sourceforge.net/projects/lam) Copyright (C) 2004 - 2006 Roland Gruber 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /** * This class provides functions to calculate Samba NT and LM hashes. * * The code is a conversion from createntlm.pl (Benjamin Kuit) and smbdes.c/md4.c (Andrew Tridgell). * * @author Roland Gruber * @package lam */ /** * Calculates NT and LM hashes. * * The important functions are lmhash($password) and nthash($password). * * @package lam */ class smbHash { # Contants used in lanlam hash calculations # Ported from SAMBA/source/libsmb/smbdes.c:perm1[56] private $perm1 = array(57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36, 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4); # Ported from SAMBA/source/libsmb/smbdes.c:perm2[48] private $perm2 = array(14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10, 23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2, 41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48, 44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32); # Ported from SAMBA/source/libsmb/smbdes.c:perm3[64] private $perm3 = array(58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8, 57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7); # Ported from SAMBA/source/libsmb/smbdes.c:perm4[48] private $perm4 = array(32, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9, 8, 9, 10, 11, 12, 13, 12, 13, 14, 15, 16, 17, 16, 17, 18, 19, 20, 21, 20, 21, 22, 23, 24, 25, 24, 25, 26, 27, 28, 29, 28, 29, 30, 31, 32, 1); # Ported from SAMBA/source/libsmb/smbdes.c:perm5[32] private $perm5 = array(16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10, 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25); # Ported from SAMBA/source/libsmb/smbdes.c:perm6[64] private $perm6 = array(40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15, 55, 23, 63, 31, 38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53, 21, 61, 29, 36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19, 59, 27, 34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9, 49, 17, 57, 25); # Ported from SAMBA/source/libsmb/smbdes.c:sc[16] private $sc = array(1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1); # Ported from SAMBA/source/libsmb/smbdes.c:sbox[8][4][16] # Side note, I used cut and paste for all these numbers, I did NOT # type them all in =) private $sbox = array(array(array(14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7), array( 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8), array( 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0), array(15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13)), array(array(15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10), array( 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5), array( 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15), array(13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9)), array(array(10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8), array(13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1), array(13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7), array( 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12)), array(array( 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15), array(13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9), array(10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4), array( 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14)), array(array( 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9), array(14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6), array( 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14), array(11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3)), array(array(12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11), array(10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8), array( 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6), array( 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13)), array(array( 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1), array(13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6), array( 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2), array( 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12)), array(array(13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7), array( 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2), array( 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8), array( 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11))); /** * Fixes too large numbers */ private function x($i) { if ($i < 0) return 4294967296 - $i; else return $i; } /** * @param integer count * @param array $data * @return array */ private function lshift($count, $data) { $ret = array(); for ($i = 0; $i < sizeof($data); $i++) { $ret[$i] = $data[($i + $count)%sizeof($data)]; } return $ret; } /** * @param array in input data * @param array p permutation * @return array */ private function permute($in, $p, $n) { $ret = array(); for ($i = 0; $i < $n; $i++) { $ret[$i] = $in[$p[$i] - 1]?1:0; } return $ret; } /** * @param array $in1 * @param array $in2 * @return array */ private function mxor($in1, $in2) { $ret = array(); for ($i = 0; $i < sizeof($in1); $i++) { $ret[$i] = $in1[$i] ^ $in2[$i]; } return $ret; } /** * @param array $in * @param array $key * @param boolean $forw * @return array */ function doHash($in, $key, $forw) { $ki = array(); $pk1 = $this->permute($key, $this->perm1, 56); $c = array(); $d = array(); for ($i = 0; $i < 28; $i++) { $c[$i] = $pk1[$i]; $d[$i] = $pk1[28 + $i]; } for ($i = 0; $i < 16; $i++) { $c = $this->lshift($this->sc[$i], $c); $d = $this->lshift($this->sc[$i], $d); $cd = $c; for ($k = 0; $k < sizeof($d); $k++) $cd[] = $d[$k]; $ki[$i] = $this->permute($cd, $this->perm2, 48); } $pd1 = $this->permute($in, $this->perm3, 64); $l = array(); $r = array(); for ($i = 0; $i < 32; $i++) { $l[$i] = $pd1[$i]; $r[$i] = $pd1[32 + $i]; } for ($i = 0; $i < 16; $i++) { $er = $this->permute($r, $this->perm4, 48); if ($forw) $erk = $this->mxor($er, $ki[$i]); else $erk = $this->mxor($er, $ki[15 - $i]); for ($j = 0; $j < 8; $j++) { for ($k = 0; $k < 6; $k++) { $b[$j][$k] = $erk[($j * 6) + $k]; } } for ($j = 0; $j < 8; $j++) { $m = array(); $n = array(); $m = ($b[$j][0] << 1) | $b[$j][5]; $n = ($b[$j][1] << 3) | ($b[$j][2] << 2) | ($b[$j][3] << 1) | $b[$j][4]; for ($k = 0; $k < 4; $k++) { $b[$j][$k]=($this->sbox[$j][$m][$n] & (1 << (3-$k)))?1:0; } } for ($j = 0; $j < 8; $j++) { for ($k = 0; $k < 4; $k++) { $cb[($j * 4) + $k] = $b[$j][$k]; } } $pcb = $this->permute($cb, $this->perm5, 32); $r2 = $this->mxor($l, $pcb); for ($k = 0; $k < 32; $k++) $l[$k] = $r[$k]; for ($k = 0; $k < 32; $k++) $r[$k] = $r2[$k]; } $rl = $r; for ($i = 0; $i < sizeof($l); $i++) $rl[] = $l[$i]; return $this->permute($rl, $this->perm6, 64); } /** * str_to_key * * @param string $str * @return string key */ private function str_to_key($str) { $key[0] = $this->unsigned_shift_r($str[0], 1); $key[1] = (($str[0]&0x01)<<6) | $this->unsigned_shift_r($str[1], 2); $key[2] = (($str[1]&0x03)<<5) | $this->unsigned_shift_r($str[2], 3); $key[3] = (($str[2]&0x07)<<4) | $this->unsigned_shift_r($str[3], 4); $key[4] = (($str[3]&0x0F)<<3) | $this->unsigned_shift_r($str[4], 5); $key[5] = (($str[4]&0x1F)<<2) | $this->unsigned_shift_r($str[5], 6); $key[6] = (($str[5]&0x3F)<<1) | $this->unsigned_shift_r($str[6], 7); $key[7] = $str[6]&0x7F; for ($i = 0; $i < 8; $i++) { $key[$i] = ($key[$i] << 1); } return $key; } /** * smb_hash * * @param unknown_type $in * @param unknown_type $key * @param unknown_type $forw * @return unknown */ private function smb_hash($in, $key, $forw){ $key2 = $this->str_to_key($key); for ($i = 0; $i < 64; $i++) { $inb[$i] = ($in[$i/8] & (1<<(7-($i%8)))) ? 1:0; $keyb[$i] = ($key2[$i/8] & (1<<(7-($i%8)))) ? 1:0; $outb[$i] = 0; } $outb = $this->doHash($inb, $keyb, $forw); for ($i = 0; $i < 8; $i++) { $out[$i] = 0; } for ($i = 0; $i < 64; $i++) { if ( $outb[$i] ) { $out[$i/8] |= (1<<(7-($i%8))); } } return $out; } /** * E_P16 * * @param unknown_type $in * @return unknown */ private function E_P16($in) { $p14 = array_values(unpack("C*",$in)); $sp8 = array(0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25); $p14_1 = array(); $p14_2 = array(); for ($i = 0; $i < 7; $i++) { $p14_1[$i] = $p14[$i]; $p14_2[$i] = $p14[$i + 7]; } $p16_1 = $this->smb_hash($sp8, $p14_1, true); $p16_2 = $this->smb_hash($sp8, $p14_2, true); $p16 = $p16_1; for ($i = 0; $i < sizeof($p16_2); $i++) { $p16[] = $p16_2[$i]; } return $p16; } /** * Calculates the LM hash of a given password. * * @param string $password password * @return string hash value */ public function lmhash($password = "") { $password = strtoupper($password); $password = substr($password,0,14); $password = str_pad($password, 14, chr(0)); $p16 = $this->E_P16($password); for ($i = 0; $i < sizeof($p16); $i++) { $p16[$i] = sprintf("%02X", $p16[$i]); } return join("", $p16); } /** * Calculates the NT hash of a given password. * * @param string $password password * @return string hash value */ public function nthash($password = "") { if (function_exists('mhash')) if (defined('MHASH_MD4')) return strtoupper(bin2hex(mhash(MHASH_MD4,iconv('UTF-8','UTF-16LE',$password)))); else return strtoupper(hash('md4', iconv("UTF-8","UTF-16LE",$password))); else error(_('Your PHP install does not have the mhash() function. Cannot do hashes.'),'error','index.php'); } /** * Unsigned shift operation for 32bit values. * * PHP 4 only supports signed shifts by default. */ private function unsigned_shift_r($a, $b) { $z = 0x80000000; if ($z & $a) { $a = ($a >> 1); $a &= (~$z); $a |= 0x40000000; $a = ($a >> ($b - 1)); } else { $a = ($a >> $b); } return $a; } } ?>