Password Plugin / LDAP Driver:
- adds support for (optional) multiple userPassword values for compatibility with more authentication shemes - adds support for CRAM-MD5 scheme as implemented by doveadm pw (credits: see header of plugins/password/helpers/dovecot_hmacmd5.php)pull/230/head
Lorenzo Perone
10 years ago
parent
c45507e317
commit
3e3fcd4d27
@ -0,0 +1,191 @@
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<?php
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/**
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*
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* dovecot_hmacmd5.php V1.01
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*
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* Generates HMAC-MD5 'contexts' for Dovecot's password files.
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*
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* (C) 2008 Hajo Noerenberg
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*
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* http://www.noerenberg.de/hajo/pub/dovecot_hmacmd5.php.txt
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*
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* Most of the code has been shamelessly stolen from various sources:
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*
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* (C) Paul Johnston 1999 - 2000 / http://pajhome.org.uk/crypt/md5/
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* (C) William K. Cole 2008 / http://www.scconsult.com/bill/crampass.pl
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* (C) Borfast 2002 / http://www.zend.com/code/codex.php?ozid=962&single=1
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* (C) Thomas Weber / http://pajhome.org.uk/crypt/md5/contrib/md5.java.txt
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*
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 3.0 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/gpl-3.0.txt>.
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*
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*/
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/* Convert a 32-bit number to a hex string with ls-byte first
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*/
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function rhex($n) {
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$hex_chr = "0123456789abcdef"; $r = '';
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for($j = 0; $j <= 3; $j++)
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$r .= $hex_chr[($n >> ($j * 8 + 4)) & 0x0F] . $hex_chr[($n >> ($j * 8)) & 0x0F];
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return $r;
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}
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/* zeroFill() is needed because PHP doesn't have a zero-fill
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* right shift operator like JavaScript's >>>
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*/
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function zeroFill($a, $b) {
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$z = hexdec(80000000);
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if ($z & $a) {
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$a >>= 1;
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$a &= (~$z);
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$a |= 0x40000000;
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$a >>= ($b-1);
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} else {
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$a >>= $b;
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}
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return $a;
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}
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/* Bitwise rotate a 32-bit number to the left
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*/
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function bit_rol($num, $cnt) {
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return ($num << $cnt) | (zeroFill($num, (32 - $cnt)));
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}
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/* Add integers, wrapping at 2^32
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*/
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function safe_add($x, $y) {
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return (($x&0x7FFFFFFF) + ($y&0x7FFFFFFF)) ^ ($x&0x80000000) ^ ($y&0x80000000);
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}
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/* These functions implement the four basic operations the algorithm uses.
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*/
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function md5_cmn($q, $a, $b, $x, $s, $t) {
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return safe_add(bit_rol(safe_add(safe_add($a, $q), safe_add($x, $t)), $s), $b);
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}
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function md5_ff($a, $b, $c, $d, $x, $s, $t) {
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return md5_cmn(($b & $c) | ((~$b) & $d), $a, $b, $x, $s, $t);
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}
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function md5_gg($a, $b, $c, $d, $x, $s, $t) {
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return md5_cmn(($b & $d) | ($c & (~$d)), $a, $b, $x, $s, $t);
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}
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function md5_hh($a, $b, $c, $d, $x, $s, $t) {
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return md5_cmn($b ^ $c ^ $d, $a, $b, $x, $s, $t);
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}
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function md5_ii($a, $b, $c, $d, $x, $s, $t) {
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return md5_cmn($c ^ ($b | (~$d)), $a, $b, $x, $s, $t);
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}
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/* Calculate the first round of the MD5 algorithm
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*/
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function md5_oneround($s, $io) {
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$s = str_pad($s, 64, chr(0x00));
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$x = array_fill(0, 16, 0);
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for($i = 0; $i < 64; $i++)
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$x[$i >> 2] |= (($io ? 0x36 : 0x5c) ^ ord($s[$i])) << (($i % 4) * 8);
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$a = $olda = 1732584193;
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$b = $oldb = -271733879;
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$c = $oldc = -1732584194;
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$d = $oldd = 271733878;
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$a = md5_ff($a, $b, $c, $d, $x[ 0], 7 , -680876936);
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$d = md5_ff($d, $a, $b, $c, $x[ 1], 12, -389564586);
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$c = md5_ff($c, $d, $a, $b, $x[ 2], 17, 606105819);
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$b = md5_ff($b, $c, $d, $a, $x[ 3], 22, -1044525330);
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$a = md5_ff($a, $b, $c, $d, $x[ 4], 7 , -176418897);
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$d = md5_ff($d, $a, $b, $c, $x[ 5], 12, 1200080426);
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$c = md5_ff($c, $d, $a, $b, $x[ 6], 17, -1473231341);
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$b = md5_ff($b, $c, $d, $a, $x[ 7], 22, -45705983);
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$a = md5_ff($a, $b, $c, $d, $x[ 8], 7 , 1770035416);
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$d = md5_ff($d, $a, $b, $c, $x[ 9], 12, -1958414417);
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$c = md5_ff($c, $d, $a, $b, $x[10], 17, -42063);
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$b = md5_ff($b, $c, $d, $a, $x[11], 22, -1990404162);
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$a = md5_ff($a, $b, $c, $d, $x[12], 7 , 1804603682);
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$d = md5_ff($d, $a, $b, $c, $x[13], 12, -40341101);
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$c = md5_ff($c, $d, $a, $b, $x[14], 17, -1502002290);
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$b = md5_ff($b, $c, $d, $a, $x[15], 22, 1236535329);
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$a = md5_gg($a, $b, $c, $d, $x[ 1], 5 , -165796510);
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$d = md5_gg($d, $a, $b, $c, $x[ 6], 9 , -1069501632);
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$c = md5_gg($c, $d, $a, $b, $x[11], 14, 643717713);
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$b = md5_gg($b, $c, $d, $a, $x[ 0], 20, -373897302);
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$a = md5_gg($a, $b, $c, $d, $x[ 5], 5 , -701558691);
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$d = md5_gg($d, $a, $b, $c, $x[10], 9 , 38016083);
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$c = md5_gg($c, $d, $a, $b, $x[15], 14, -660478335);
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$b = md5_gg($b, $c, $d, $a, $x[ 4], 20, -405537848);
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$a = md5_gg($a, $b, $c, $d, $x[ 9], 5 , 568446438);
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$d = md5_gg($d, $a, $b, $c, $x[14], 9 , -1019803690);
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$c = md5_gg($c, $d, $a, $b, $x[ 3], 14, -187363961);
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$b = md5_gg($b, $c, $d, $a, $x[ 8], 20, 1163531501);
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$a = md5_gg($a, $b, $c, $d, $x[13], 5 , -1444681467);
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$d = md5_gg($d, $a, $b, $c, $x[ 2], 9 , -51403784);
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$c = md5_gg($c, $d, $a, $b, $x[ 7], 14, 1735328473);
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$b = md5_gg($b, $c, $d, $a, $x[12], 20, -1926607734);
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$a = md5_hh($a, $b, $c, $d, $x[ 5], 4 , -378558);
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$d = md5_hh($d, $a, $b, $c, $x[ 8], 11, -2022574463);
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$c = md5_hh($c, $d, $a, $b, $x[11], 16, 1839030562);
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$b = md5_hh($b, $c, $d, $a, $x[14], 23, -35309556);
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$a = md5_hh($a, $b, $c, $d, $x[ 1], 4 , -1530992060);
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$d = md5_hh($d, $a, $b, $c, $x[ 4], 11, 1272893353);
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$c = md5_hh($c, $d, $a, $b, $x[ 7], 16, -155497632);
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$b = md5_hh($b, $c, $d, $a, $x[10], 23, -1094730640);
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$a = md5_hh($a, $b, $c, $d, $x[13], 4 , 681279174);
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$d = md5_hh($d, $a, $b, $c, $x[ 0], 11, -358537222);
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$c = md5_hh($c, $d, $a, $b, $x[ 3], 16, -722521979);
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$b = md5_hh($b, $c, $d, $a, $x[ 6], 23, 76029189);
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$a = md5_hh($a, $b, $c, $d, $x[ 9], 4 , -640364487);
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$d = md5_hh($d, $a, $b, $c, $x[12], 11, -421815835);
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$c = md5_hh($c, $d, $a, $b, $x[15], 16, 530742520);
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$b = md5_hh($b, $c, $d, $a, $x[ 2], 23, -995338651);
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$a = md5_ii($a, $b, $c, $d, $x[ 0], 6 , -198630844);
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$d = md5_ii($d, $a, $b, $c, $x[ 7], 10, 1126891415);
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$c = md5_ii($c, $d, $a, $b, $x[14], 15, -1416354905);
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$b = md5_ii($b, $c, $d, $a, $x[ 5], 21, -57434055);
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$a = md5_ii($a, $b, $c, $d, $x[12], 6 , 1700485571);
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$d = md5_ii($d, $a, $b, $c, $x[ 3], 10, -1894986606);
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$c = md5_ii($c, $d, $a, $b, $x[10], 15, -1051523);
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$b = md5_ii($b, $c, $d, $a, $x[ 1], 21, -2054922799);
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$a = md5_ii($a, $b, $c, $d, $x[ 8], 6 , 1873313359);
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$d = md5_ii($d, $a, $b, $c, $x[15], 10, -30611744);
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$c = md5_ii($c, $d, $a, $b, $x[ 6], 15, -1560198380);
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$b = md5_ii($b, $c, $d, $a, $x[13], 21, 1309151649);
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$a = md5_ii($a, $b, $c, $d, $x[ 4], 6 , -145523070);
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$d = md5_ii($d, $a, $b, $c, $x[11], 10, -1120210379);
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$c = md5_ii($c, $d, $a, $b, $x[ 2], 15, 718787259);
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$b = md5_ii($b, $c, $d, $a, $x[ 9], 21, -343485551);
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$a = safe_add($a, $olda);
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$b = safe_add($b, $oldb);
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$c = safe_add($c, $oldc);
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$d = safe_add($d, $oldd);
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return rhex($a) . rhex($b) . rhex($c) . rhex($d);
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}
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function dovecot_hmacmd5 ($s) {
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if (strlen($s) > 64) $s=pack("H*", md5($s));
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return "{CRAM-MD5}" . md5_oneround($s, 0) . md5_oneround($s, 1);
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}
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