633 lines
21 KiB
PHP
633 lines
21 KiB
PHP
|
<?php
|
||
|
|
/**
|
||
|
|
* Password Hashing Class
|
||
|
|
*
|
||
|
|
* This class implements various mechanisms used to hash passwords
|
||
|
|
*
|
||
|
|
* @author Andreas Gohr <andi@splitbrain.org>
|
||
|
|
* @license LGPL2
|
||
|
|
*/
|
||
|
|
class PassHash {
|
||
|
|
/**
|
||
|
|
* Verifies a cleartext password against a crypted hash
|
||
|
|
*
|
||
|
|
* The method and salt used for the crypted hash is determined automatically,
|
||
|
|
* then the clear text password is crypted using the same method. If both hashs
|
||
|
|
* match true is is returned else false
|
||
|
|
*
|
||
|
|
* @author Andreas Gohr <andi@splitbrain.org>
|
||
|
|
*
|
||
|
|
* @param string $clear Clear-Text password
|
||
|
|
* @param string $hash Hash to compare against
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
function verify_hash($clear, $hash) {
|
||
|
|
$method = '';
|
||
|
|
$salt = '';
|
||
|
|
$magic = '';
|
||
|
|
|
||
|
|
//determine the used method and salt
|
||
|
|
$len = strlen($hash);
|
||
|
|
if(preg_match('/^\$1\$([^\$]{0,8})\$/', $hash, $m)) {
|
||
|
|
$method = 'smd5';
|
||
|
|
$salt = $m[1];
|
||
|
|
$magic = '1';
|
||
|
|
} elseif(preg_match('/^\$apr1\$([^\$]{0,8})\$/', $hash, $m)) {
|
||
|
|
$method = 'apr1';
|
||
|
|
$salt = $m[1];
|
||
|
|
$magic = 'apr1';
|
||
|
|
} elseif(preg_match('/^\$P\$(.{31})$/', $hash, $m)) {
|
||
|
|
$method = 'pmd5';
|
||
|
|
$salt = $m[1];
|
||
|
|
$magic = 'P';
|
||
|
|
} elseif(preg_match('/^\$H\$(.{31})$/', $hash, $m)) {
|
||
|
|
$method = 'pmd5';
|
||
|
|
$salt = $m[1];
|
||
|
|
$magic = 'H';
|
||
|
|
} elseif(preg_match('/^pbkdf2_(\w+?)\$(\d+)\$(.{12})\$/', $hash, $m)) {
|
||
|
|
$method = 'djangopbkdf2';
|
||
|
|
$magic = array(
|
||
|
|
'algo' => $m[1],
|
||
|
|
'iter' => $m[2],
|
||
|
|
);
|
||
|
|
$salt = $m[3];
|
||
|
|
} elseif(preg_match('/^sha1\$(.{5})\$/', $hash, $m)) {
|
||
|
|
$method = 'djangosha1';
|
||
|
|
$salt = $m[1];
|
||
|
|
} elseif(preg_match('/^md5\$(.{5})\$/', $hash, $m)) {
|
||
|
|
$method = 'djangomd5';
|
||
|
|
$salt = $m[1];
|
||
|
|
} elseif(preg_match('/^\$2(a|y)\$(.{2})\$/', $hash, $m)) {
|
||
|
|
$method = 'bcrypt';
|
||
|
|
$salt = $hash;
|
||
|
|
} elseif(substr($hash, 0, 6) == '{SSHA}') {
|
||
|
|
$method = 'ssha';
|
||
|
|
$salt = substr(base64_decode(substr($hash, 6)), 20);
|
||
|
|
} elseif(substr($hash, 0, 6) == '{SMD5}') {
|
||
|
|
$method = 'lsmd5';
|
||
|
|
$salt = substr(base64_decode(substr($hash, 6)), 16);
|
||
|
|
} elseif(preg_match('/^:B:(.+?):.{32}$/', $hash, $m)) {
|
||
|
|
$method = 'mediawiki';
|
||
|
|
$salt = $m[1];
|
||
|
|
} elseif(preg_match('/^\$6\$(.+?)\$/', $hash, $m)) {
|
||
|
|
$method = 'sha512';
|
||
|
|
$salt = $m[1];
|
||
|
|
} elseif($len == 32) {
|
||
|
|
$method = 'md5';
|
||
|
|
} elseif($len == 40) {
|
||
|
|
$method = 'sha1';
|
||
|
|
} elseif($len == 16) {
|
||
|
|
$method = 'mysql';
|
||
|
|
} elseif($len == 41 && $hash[0] == '*') {
|
||
|
|
$method = 'my411';
|
||
|
|
} elseif($len == 34) {
|
||
|
|
$method = 'kmd5';
|
||
|
|
$salt = $hash;
|
||
|
|
} else {
|
||
|
|
$method = 'crypt';
|
||
|
|
$salt = substr($hash, 0, 2);
|
||
|
|
}
|
||
|
|
|
||
|
|
//crypt and compare
|
||
|
|
$call = 'hash_'.$method;
|
||
|
|
$newhash = $this->$call($clear, $salt, $magic);
|
||
|
|
if($newhash === $hash) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Create a random salt
|
||
|
|
*
|
||
|
|
* @param int $len The length of the salt
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public function gen_salt($len = 32) {
|
||
|
|
$salt = '';
|
||
|
|
$chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
|
||
|
|
for($i = 0; $i < $len; $i++) {
|
||
|
|
$salt .= $chars[$this->random(0, 61)];
|
||
|
|
}
|
||
|
|
return $salt;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize the passed variable with a salt if needed.
|
||
|
|
*
|
||
|
|
* If $salt is not null, the value is kept, but the lenght restriction is
|
||
|
|
* applied (unless, $cut is false).
|
||
|
|
*
|
||
|
|
* @param string|null &$salt The salt, pass null if you want one generated
|
||
|
|
* @param int $len The length of the salt
|
||
|
|
* @param bool $cut Apply length restriction to existing salt?
|
||
|
|
*/
|
||
|
|
public function init_salt(&$salt, $len = 32, $cut = true) {
|
||
|
|
if(is_null($salt)) {
|
||
|
|
$salt = $this->gen_salt($len);
|
||
|
|
$cut = true; // for new hashes we alway apply length restriction
|
||
|
|
}
|
||
|
|
if(strlen($salt) > $len && $cut) $salt = substr($salt, 0, $len);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Password hashing methods follow below
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'smd5'
|
||
|
|
*
|
||
|
|
* Uses salted MD5 hashs. Salt is 8 bytes long.
|
||
|
|
*
|
||
|
|
* The same mechanism is used by Apache's 'apr1' method. This will
|
||
|
|
* fallback to a implementation in pure PHP if MD5 support is not
|
||
|
|
* available in crypt()
|
||
|
|
*
|
||
|
|
* @author Andreas Gohr <andi@splitbrain.org>
|
||
|
|
* @author <mikey_nich at hotmail dot com>
|
||
|
|
* @link http://php.net/manual/en/function.crypt.php#73619
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_smd5($clear, $salt = null) {
|
||
|
|
$this->init_salt($salt, 8);
|
||
|
|
|
||
|
|
if(defined('CRYPT_MD5') && CRYPT_MD5 && $salt !== '') {
|
||
|
|
return crypt($clear, '$1$'.$salt.'$');
|
||
|
|
} else {
|
||
|
|
// Fall back to PHP-only implementation
|
||
|
|
return $this->hash_apr1($clear, $salt, '1');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'lsmd5'
|
||
|
|
*
|
||
|
|
* Uses salted MD5 hashs. Salt is 8 bytes long.
|
||
|
|
*
|
||
|
|
* This is the format used by LDAP.
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_lsmd5($clear, $salt = null) {
|
||
|
|
$this->init_salt($salt, 8);
|
||
|
|
return "{SMD5}".base64_encode(md5($clear.$salt, true).$salt);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'apr1'
|
||
|
|
*
|
||
|
|
* Uses salted MD5 hashs. Salt is 8 bytes long.
|
||
|
|
*
|
||
|
|
* This is basically the same as smd1 above, but as used by Apache.
|
||
|
|
*
|
||
|
|
* @author <mikey_nich at hotmail dot com>
|
||
|
|
* @link http://php.net/manual/en/function.crypt.php#73619
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @param string $magic The hash identifier (apr1 or 1)
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_apr1($clear, $salt = null, $magic = 'apr1') {
|
||
|
|
$this->init_salt($salt, 8);
|
||
|
|
|
||
|
|
$len = strlen($clear);
|
||
|
|
$text = $clear.'$'.$magic.'$'.$salt;
|
||
|
|
$bin = pack("H32", md5($clear.$salt.$clear));
|
||
|
|
for($i = $len; $i > 0; $i -= 16) {
|
||
|
|
$text .= substr($bin, 0, min(16, $i));
|
||
|
|
}
|
||
|
|
for($i = $len; $i > 0; $i >>= 1) {
|
||
|
|
$text .= ($i & 1) ? chr(0) : $clear{0};
|
||
|
|
}
|
||
|
|
$bin = pack("H32", md5($text));
|
||
|
|
for($i = 0; $i < 1000; $i++) {
|
||
|
|
$new = ($i & 1) ? $clear : $bin;
|
||
|
|
if($i % 3) $new .= $salt;
|
||
|
|
if($i % 7) $new .= $clear;
|
||
|
|
$new .= ($i & 1) ? $bin : $clear;
|
||
|
|
$bin = pack("H32", md5($new));
|
||
|
|
}
|
||
|
|
$tmp = '';
|
||
|
|
for($i = 0; $i < 5; $i++) {
|
||
|
|
$k = $i + 6;
|
||
|
|
$j = $i + 12;
|
||
|
|
if($j == 16) $j = 5;
|
||
|
|
$tmp = $bin[$i].$bin[$k].$bin[$j].$tmp;
|
||
|
|
}
|
||
|
|
$tmp = chr(0).chr(0).$bin[11].$tmp;
|
||
|
|
$tmp = strtr(
|
||
|
|
strrev(substr(base64_encode($tmp), 2)),
|
||
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",
|
||
|
|
"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
|
||
|
|
);
|
||
|
|
return '$'.$magic.'$'.$salt.'$'.$tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'md5'
|
||
|
|
*
|
||
|
|
* Uses MD5 hashs.
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_md5($clear) {
|
||
|
|
return md5($clear);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'sha1'
|
||
|
|
*
|
||
|
|
* Uses SHA1 hashs.
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_sha1($clear) {
|
||
|
|
return sha1($clear);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'ssha' as used by LDAP
|
||
|
|
*
|
||
|
|
* Uses salted SHA1 hashs. Salt is 4 bytes long.
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_ssha($clear, $salt = null) {
|
||
|
|
$this->init_salt($salt, 4);
|
||
|
|
return '{SSHA}'.base64_encode(pack("H*", sha1($clear.$salt)).$salt);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'crypt'
|
||
|
|
*
|
||
|
|
* Uses salted crypt hashs. Salt is 2 bytes long.
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_crypt($clear, $salt = null) {
|
||
|
|
$this->init_salt($salt, 2);
|
||
|
|
return crypt($clear, $salt);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'mysql'
|
||
|
|
*
|
||
|
|
* This method was used by old MySQL systems
|
||
|
|
*
|
||
|
|
* @link http://php.net/mysql
|
||
|
|
* @author <soren at byu dot edu>
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_mysql($clear) {
|
||
|
|
$nr = 0x50305735;
|
||
|
|
$nr2 = 0x12345671;
|
||
|
|
$add = 7;
|
||
|
|
$charArr = preg_split("//", $clear);
|
||
|
|
foreach($charArr as $char) {
|
||
|
|
if(($char == '') || ($char == ' ') || ($char == '\t')) continue;
|
||
|
|
$charVal = ord($char);
|
||
|
|
$nr ^= ((($nr & 63) + $add) * $charVal) + ($nr << 8);
|
||
|
|
$nr2 += ($nr2 << 8) ^ $nr;
|
||
|
|
$add += $charVal;
|
||
|
|
}
|
||
|
|
return sprintf("%08x%08x", ($nr & 0x7fffffff), ($nr2 & 0x7fffffff));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'my411'
|
||
|
|
*
|
||
|
|
* Uses SHA1 hashs. This method is used by MySQL 4.11 and above
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_my411($clear) {
|
||
|
|
return '*'.strtoupper(sha1(pack("H*", sha1($clear))));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'kmd5'
|
||
|
|
*
|
||
|
|
* Uses salted MD5 hashs.
|
||
|
|
*
|
||
|
|
* Salt is 2 bytes long, but stored at position 16, so you need to pass at
|
||
|
|
* least 18 bytes. You can pass the crypted hash as salt.
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_kmd5($clear, $salt = null) {
|
||
|
|
$this->init_salt($salt);
|
||
|
|
|
||
|
|
$key = substr($salt, 16, 2);
|
||
|
|
$hash1 = strtolower(md5($key.md5($clear)));
|
||
|
|
$hash2 = substr($hash1, 0, 16).$key.substr($hash1, 16);
|
||
|
|
return $hash2;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'pmd5'
|
||
|
|
*
|
||
|
|
* Uses salted MD5 hashs. Salt is 1+8 bytes long, 1st byte is the
|
||
|
|
* iteration count when given, for null salts $compute is used.
|
||
|
|
*
|
||
|
|
* The actual iteration count is the given count squared, maximum is
|
||
|
|
* 30 (-> 1073741824). If a higher one is given, the function throws
|
||
|
|
* an exception.
|
||
|
|
*
|
||
|
|
* @link http://www.openwall.com/phpass/
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @param string $magic The hash identifier (P or H)
|
||
|
|
* @param int $compute The iteration count for new passwords
|
||
|
|
* @throws Exception
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_pmd5($clear, $salt = null, $magic = 'P', $compute = 8) {
|
||
|
|
$itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
|
||
|
|
if(is_null($salt)) {
|
||
|
|
$this->init_salt($salt);
|
||
|
|
$salt = $itoa64[$compute].$salt; // prefix iteration count
|
||
|
|
}
|
||
|
|
$iterc = $salt[0]; // pos 0 of salt is iteration count
|
||
|
|
$iter = strpos($itoa64, $iterc);
|
||
|
|
|
||
|
|
if($iter > 30) {
|
||
|
|
throw new Exception("Too high iteration count ($iter) in ".
|
||
|
|
__CLASS__.'::'.__FUNCTION__);
|
||
|
|
}
|
||
|
|
|
||
|
|
$iter = 1 << $iter;
|
||
|
|
$salt = substr($salt, 1, 8);
|
||
|
|
|
||
|
|
// iterate
|
||
|
|
$hash = md5($salt.$clear, true);
|
||
|
|
do {
|
||
|
|
$hash = md5($hash.$clear, true);
|
||
|
|
} while(--$iter);
|
||
|
|
|
||
|
|
// encode
|
||
|
|
$output = '';
|
||
|
|
$count = 16;
|
||
|
|
$i = 0;
|
||
|
|
do {
|
||
|
|
$value = ord($hash[$i++]);
|
||
|
|
$output .= $itoa64[$value & 0x3f];
|
||
|
|
if($i < $count)
|
||
|
|
$value |= ord($hash[$i]) << 8;
|
||
|
|
$output .= $itoa64[($value >> 6) & 0x3f];
|
||
|
|
if($i++ >= $count)
|
||
|
|
break;
|
||
|
|
if($i < $count)
|
||
|
|
$value |= ord($hash[$i]) << 16;
|
||
|
|
$output .= $itoa64[($value >> 12) & 0x3f];
|
||
|
|
if($i++ >= $count)
|
||
|
|
break;
|
||
|
|
$output .= $itoa64[($value >> 18) & 0x3f];
|
||
|
|
} while($i < $count);
|
||
|
|
|
||
|
|
return '$'.$magic.'$'.$iterc.$salt.$output;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Alias for hash_pmd5
|
||
|
|
*/
|
||
|
|
public function hash_hmd5($clear, $salt = null, $magic = 'H', $compute = 8) {
|
||
|
|
return $this->hash_pmd5($clear, $salt, $magic, $compute);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'djangosha1'
|
||
|
|
*
|
||
|
|
* Uses salted SHA1 hashs. Salt is 5 bytes long.
|
||
|
|
* This is used by the Django Python framework
|
||
|
|
*
|
||
|
|
* @link http://docs.djangoproject.com/en/dev/topics/auth/#passwords
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_djangosha1($clear, $salt = null) {
|
||
|
|
$this->init_salt($salt, 5);
|
||
|
|
return 'sha1$'.$salt.'$'.sha1($salt.$clear);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'djangomd5'
|
||
|
|
*
|
||
|
|
* Uses salted MD5 hashs. Salt is 5 bytes long.
|
||
|
|
* This is used by the Django Python framework
|
||
|
|
*
|
||
|
|
* @link http://docs.djangoproject.com/en/dev/topics/auth/#passwords
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_djangomd5($clear, $salt = null) {
|
||
|
|
$this->init_salt($salt, 5);
|
||
|
|
return 'md5$'.$salt.'$'.md5($salt.$clear);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'djangopbkdf2'
|
||
|
|
*
|
||
|
|
* An algorithm and iteration count should be given in the opts array.
|
||
|
|
* Defaults to sha256 and 24000 iterations
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @param array $opts ('algo' => hash algorithm, 'iter' => iterations)
|
||
|
|
* @return string Hashed password
|
||
|
|
* @throws Exception when PHP is missing support for the method/algo
|
||
|
|
*/
|
||
|
|
public function hash_djangopbkdf2($clear, $salt=null, $opts=array()) {
|
||
|
|
$this->init_salt($salt, 12);
|
||
|
|
if(empty($opts['algo'])) {
|
||
|
|
$algo = 'sha256';
|
||
|
|
} else {
|
||
|
|
$algo = $opts['algo'];
|
||
|
|
}
|
||
|
|
if(empty($opts['iter'])) {
|
||
|
|
$iter = 24000;
|
||
|
|
} else {
|
||
|
|
$iter = (int) $opts['iter'];
|
||
|
|
}
|
||
|
|
if(!function_exists('hash_pbkdf2')) {
|
||
|
|
throw new Exception('This PHP installation has no PBKDF2 support');
|
||
|
|
}
|
||
|
|
if(!in_array($algo, hash_algos())) {
|
||
|
|
throw new Exception("This PHP installation has no $algo support");
|
||
|
|
}
|
||
|
|
|
||
|
|
$hash = base64_encode(hash_pbkdf2($algo, $clear, $salt, $iter, 0, true));
|
||
|
|
return "pbkdf2_$algo\$$iter\$$salt\$$hash";
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Alias for djangopbkdf2 defaulting to sha256 as hash algorithm
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @param array $opts ('iter' => iterations)
|
||
|
|
* @return string Hashed password
|
||
|
|
* @throws Exception when PHP is missing support for the method/algo
|
||
|
|
*/
|
||
|
|
public function hash_djangopbkdf2_sha256($clear, $salt=null, $opts=array()) {
|
||
|
|
$opts['algo'] = 'sha256';
|
||
|
|
return $this->hash_djangopbkdf2($clear, $salt, $opts);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Alias for djangopbkdf2 defaulting to sha1 as hash algorithm
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @param array $opts ('iter' => iterations)
|
||
|
|
* @return string Hashed password
|
||
|
|
* @throws Exception when PHP is missing support for the method/algo
|
||
|
|
*/
|
||
|
|
public function hash_djangopbkdf2_sha1($clear, $salt=null, $opts=array()) {
|
||
|
|
$opts['algo'] = 'sha1';
|
||
|
|
return $this->hash_djangopbkdf2($clear, $salt, $opts);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Passwordhashing method 'bcrypt'
|
||
|
|
*
|
||
|
|
* Uses a modified blowfish algorithm called eksblowfish
|
||
|
|
* This method works on PHP 5.3+ only and will throw an exception
|
||
|
|
* if the needed crypt support isn't available
|
||
|
|
*
|
||
|
|
* A full hash should be given as salt (starting with $a2$) or this
|
||
|
|
* will break. When no salt is given, the iteration count can be set
|
||
|
|
* through the $compute variable.
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @param int $compute The iteration count (between 4 and 31)
|
||
|
|
* @throws Exception
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_bcrypt($clear, $salt = null, $compute = 8) {
|
||
|
|
if(!defined('CRYPT_BLOWFISH') || CRYPT_BLOWFISH != 1) {
|
||
|
|
throw new Exception('This PHP installation has no bcrypt support');
|
||
|
|
}
|
||
|
|
|
||
|
|
if(is_null($salt)) {
|
||
|
|
if($compute < 4 || $compute > 31) $compute = 8;
|
||
|
|
$salt = '$2a$'.str_pad($compute, 2, '0', STR_PAD_LEFT).'$'.
|
||
|
|
$this->gen_salt(22);
|
||
|
|
}
|
||
|
|
|
||
|
|
return crypt($clear, $salt);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method SHA512
|
||
|
|
*
|
||
|
|
* This is only supported on PHP 5.3.2 or higher and will throw an exception if
|
||
|
|
* the needed crypt support is not available
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @return string Hashed password
|
||
|
|
* @throws Exception
|
||
|
|
*/
|
||
|
|
public function hash_sha512($clear, $salt = null) {
|
||
|
|
if(!defined('CRYPT_SHA512') || CRYPT_SHA512 != 1) {
|
||
|
|
throw new Exception('This PHP installation has no SHA512 support');
|
||
|
|
}
|
||
|
|
$this->init_salt($salt, 8, false);
|
||
|
|
return crypt($clear, '$6$'.$salt.'$');
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Password hashing method 'mediawiki'
|
||
|
|
*
|
||
|
|
* Uses salted MD5, this is referred to as Method B in MediaWiki docs. Unsalted md5
|
||
|
|
* method 'A' is not supported.
|
||
|
|
*
|
||
|
|
* @link http://www.mediawiki.org/wiki/Manual_talk:User_table#user_password_column
|
||
|
|
*
|
||
|
|
* @param string $clear The clear text to hash
|
||
|
|
* @param string $salt The salt to use, null for random
|
||
|
|
* @return string Hashed password
|
||
|
|
*/
|
||
|
|
public function hash_mediawiki($clear, $salt = null) {
|
||
|
|
$this->init_salt($salt, 8, false);
|
||
|
|
return ':B:'.$salt.':'.md5($salt.'-'.md5($clear));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Wraps around native hash_hmac() or reimplents it
|
||
|
|
*
|
||
|
|
* This is not directly used as password hashing method, and thus isn't callable via the
|
||
|
|
* verify_hash() method. It should be used to create signatures and might be used in other
|
||
|
|
* password hashing methods.
|
||
|
|
*
|
||
|
|
* @see hash_hmac()
|
||
|
|
* @author KC Cloyd
|
||
|
|
* @link http://php.net/manual/en/function.hash-hmac.php#93440
|
||
|
|
*
|
||
|
|
* @param string $algo Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4",
|
||
|
|
* etc..) See hash_algos() for a list of supported algorithms.
|
||
|
|
* @param string $data Message to be hashed.
|
||
|
|
* @param string $key Shared secret key used for generating the HMAC variant of the message digest.
|
||
|
|
* @param bool $raw_output When set to TRUE, outputs raw binary data. FALSE outputs lowercase hexits.
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public static function hmac($algo, $data, $key, $raw_output = false) {
|
||
|
|
// use native function if available and not in unit test
|
||
|
|
if(function_exists('hash_hmac') && !defined('SIMPLE_TEST')){
|
||
|
|
return hash_hmac($algo, $data, $key, $raw_output);
|
||
|
|
}
|
||
|
|
|
||
|
|
$algo = strtolower($algo);
|
||
|
|
$pack = 'H' . strlen($algo('test'));
|
||
|
|
$size = 64;
|
||
|
|
$opad = str_repeat(chr(0x5C), $size);
|
||
|
|
$ipad = str_repeat(chr(0x36), $size);
|
||
|
|
|
||
|
|
if(strlen($key) > $size) {
|
||
|
|
$key = str_pad(pack($pack, $algo($key)), $size, chr(0x00));
|
||
|
|
} else {
|
||
|
|
$key = str_pad($key, $size, chr(0x00));
|
||
|
|
}
|
||
|
|
|
||
|
|
for($i = 0; $i < strlen($key) - 1; $i++) {
|
||
|
|
$opad[$i] = $opad[$i] ^ $key[$i];
|
||
|
|
$ipad[$i] = $ipad[$i] ^ $key[$i];
|
||
|
|
}
|
||
|
|
|
||
|
|
$output = $algo($opad . pack($pack, $algo($ipad . $data)));
|
||
|
|
|
||
|
|
return ($raw_output) ? pack($pack, $output) : $output;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Use DokuWiki's secure random generator if available
|
||
|
|
*
|
||
|
|
* @param int $min
|
||
|
|
* @param int $max
|
||
|
|
* @return int
|
||
|
|
*/
|
||
|
|
protected function random($min, $max){
|
||
|
|
return random_int($min, $max);
|
||
|
|
}
|
||
|
|
}
|