123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840 |
- <?php
- // phpcs:disable PSR1.Methods.CamelCapsMethodName.NotCamelCaps
- namespace dokuwiki;
- /**
- * Password Hashing Class
- *
- * This class implements various mechanisms used to hash passwords
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- * @author Schplurtz le Déboulonné <Schplurtz@laposte.net>
- * @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>
- * @author Schplurtz le Déboulonné <Schplurtz@laposte.net>
- *
- * @param string $clear Clear-Text password
- * @param string $hash Hash to compare against
- * @return bool
- */
- public function verify_hash($clear, $hash) {
- $method = '';
- $salt = '';
- $magic = '';
- //determine the used method and salt
- if (substr($hash, 0, 2) == 'U$') {
- // This may be an updated password from user_update_7000(). Such hashes
- // have 'U' added as the first character and need an extra md5().
- $hash = substr($hash, 1);
- $clear = md5($clear);
- }
- $len = strlen($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];
- $magic = 'apr1';
- } elseif(preg_match('/^\$S\$(.{52})$/', $hash, $m)) {
- $method = 'drupal_sha512';
- $salt = $m[1];
- $magic = 'S';
- } elseif(preg_match('/^\$P\$(.{31})$/', $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 = $m[3];
- } elseif(preg_match('/^PBKDF2(SHA\d+)\$(\d+)\$([[:xdigit:]]+)\$([[:xdigit:]]+)$/', $hash, $m)) {
- $method = 'seafilepbkdf2';
- $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('/^\$(5|6)\$(rounds=\d+)?\$?(.+?)\$/', $hash, $m)) {
- $method = 'sha2';
- $salt = $m[3];
- $magic = array(
- 'prefix' => $m[1],
- 'rounds' => $m[2],
- );
- } elseif(preg_match('/^\$(argon2id?)/', $hash, $m)) {
- if(!defined('PASSWORD_'.strtoupper($m[1]))) {
- throw new \Exception('This PHP installation has no '.strtoupper($m[1]).' support');
- }
- return password_verify($clear,$hash);
- } elseif($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, $magic);
- if(\hash_equals($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 stretched hashing wrapper.
- *
- * Initial hash is repeatedly rehashed with same password.
- * Any salted hash algorithm supported by PHP hash() can be used. 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 2 to the power of the given count,
- * maximum is 30 (-> 2^30 = 1_073_741_824). If a higher one is given,
- * the function throws an exception.
- * This iteration count is expected to grow with increasing power of
- * new computers.
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- * @author Schplurtz le Déboulonné <Schplurtz@laposte.net>
- * @link http://www.openwall.com/phpass/
- *
- * @param string $algo The hash algorithm to be used
- * @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 $compute The iteration count for new passwords
- * @throws \Exception
- * @return string Hashed password
- */
- protected function stretched_hash($algo, $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 log2(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
- $hash = hash($algo, $salt . $clear, TRUE);
- do {
- $hash = hash($algo, $hash.$clear, true);
- } while(--$iter);
- // encode
- $output = '';
- $count = strlen($hash);
- $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;
- }
- /**
- * Password hashing method 'pmd5'
- *
- * Repeatedly uses salted MD5 hashs. See stretched_hash() for the
- * details.
- *
- *
- * @author Schplurtz le Déboulonné <Schplurtz@laposte.net>
- * @link http://www.openwall.com/phpass/
- * @see PassHash::stretched_hash() for the implementation details.
- *
- * @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) {
- return $this->stretched_hash('md5', $clear, $salt, $magic, $compute);
- }
- /**
- * Password hashing method 'drupal_sha512'
- *
- * Implements Drupal salted sha512 hashs. Drupal truncates the hash at 55
- * characters. See stretched_hash() for the details;
- *
- * @author Schplurtz le Déboulonné <Schplurtz@laposte.net>
- * @link https://api.drupal.org/api/drupal/includes%21password.inc/7.x
- * @see PassHash::stretched_hash() for the implementation details.
- *
- * @param string $clear The clear text to hash
- * @param string $salt The salt to use, null for random
- * @param string $magic The hash identifier (S)
- * @param int $compute The iteration count for new passwords (defautl is drupal 7's)
- * @throws Exception
- * @return string Hashed password
- */
- public function hash_drupal_sha512($clear, $salt = null, $magic = 'S', $compute = 15) {
- return substr($this->stretched_hash('sha512', $clear, $salt, $magic, $compute), 0, 55);
- }
- /**
- * Alias for hash_pmd5
- *
- * @param string $clear
- * @param null|string $salt
- * @param string $magic
- * @param int $compute
- *
- * @return string
- * @throws \Exception
- */
- public function hash_hmd5($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 'seafilepbkdf2'
- *
- * An algorithm and iteration count should be given in the opts array.
- *
- * Hash algorithm is the string that is in the password string in seafile
- * database. It has to be converted to a php algo name.
- *
- * @author Schplurtz le Déboulonné <Schplurtz@laposte.net>
- * @see https://stackoverflow.com/a/23670177
- *
- * @param string $clear The clear text to hash
- * @param string $salt The salt to use, null for random
- * @param array $opts ('algo' => hash algorithm, 'iter' => iterations)
- * @return string Hashed password
- * @throws Exception when PHP is missing support for the method/algo
- */
- public function hash_seafilepbkdf2($clear, $salt=null, $opts=array()) {
- $this->init_salt($salt, 64);
- if(empty($opts['algo'])) {
- $prefixalgo='SHA256';
- } else {
- $prefixalgo=$opts['algo'];
- }
- $algo = strtolower($prefixalgo);
- if(empty($opts['iter'])) {
- $iter = 10000;
- } 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");
- }
- $hash = hash_pbkdf2($algo, $clear, hex2bin($salt), $iter, 0);
- return "PBKDF2$prefixalgo\$$iter\$$salt\$$hash";
- }
- /**
- * 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, $compute = 10) {
- if(!defined('CRYPT_BLOWFISH') || CRYPT_BLOWFISH != 1) {
- throw new \Exception('This PHP installation has no bcrypt support');
- }
- if(is_null($salt)) {
- if($compute < 4 || $compute > 31) $compute = 8;
- $salt = '$2y$'.str_pad($compute, 2, '0', STR_PAD_LEFT).'$'.
- $this->gen_salt(22);
- }
- return crypt($clear, $salt);
- }
- /**
- * Password hashing method SHA-2
- *
- * This is only supported on PHP 5.3.2 or higher and will throw an exception if
- * the needed crypt support is not available
- *
- * Uses:
- * - SHA-2 with 256-bit output for prefix $5$
- * - SHA-2 with 512-bit output for prefix $6$ (default)
- *
- * @param string $clear The clear text to hash
- * @param string $salt The salt to use, null for random
- * @param array $opts ('rounds' => rounds for sha256/sha512, 'prefix' => selected method from SHA-2 family)
- * @return string Hashed password
- * @throws \Exception
- */
- public function hash_sha2($clear, $salt = null, $opts = array()) {
- if(empty($opts['prefix'])) {
- $prefix = '6';
- } else {
- $prefix = $opts['prefix'];
- }
- if(empty($opts['rounds'])) {
- $rounds = null;
- } else {
- $rounds = $opts['rounds'];
- }
- if($prefix == '5' && (!defined('CRYPT_SHA256') || CRYPT_SHA256 != 1)) {
- throw new \Exception('This PHP installation has no SHA256 support');
- }
- if($prefix == '6' && (!defined('CRYPT_SHA512') || CRYPT_SHA512 != 1)) {
- throw new \Exception('This PHP installation has no SHA512 support');
- }
- $this->init_salt($salt, 8, false);
- if(empty($rounds)) {
- return crypt($clear, '$'.$prefix.'$'.$salt.'$');
- }else{
- return crypt($clear, '$'.$prefix.'$'.$rounds.'$'.$salt.'$');
- }
- }
- /** @see sha2 */
- public function hash_sha512($clear, $salt = null, $opts=[]) {
- $opts['prefix'] = 6;
- return $this->hash_sha2($clear, $salt, $opts);
- }
- /** @see sha2 */
- public function hash_sha256($clear, $salt = null, $opts=[]) {
- $opts['prefix'] = 5;
- return $this->hash_sha2($clear, $salt, $opts);
- }
- /**
- * 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));
- }
- /**
- * Password hashing method 'argon2i'
- *
- * Uses php's own password_hash function to create argon2i password hash
- * Default Cost and thread options are used for now.
- *
- * @link https://www.php.net/manual/de/function.password-hash.php
- *
- * @param string $clear The clear text to hash
- * @return string Hashed password
- */
- public function hash_argon2i($clear) {
- if(!defined('PASSWORD_ARGON2I')) {
- throw new \Exception('This PHP installation has no ARGON2I support');
- }
- return password_hash($clear,PASSWORD_ARGON2I);
- }
- /**
- * Password hashing method 'argon2id'
- *
- * Uses php's own password_hash function to create argon2id password hash
- * Default Cost and thread options are used for now.
- *
- * @link https://www.php.net/manual/de/function.password-hash.php
- *
- * @param string $clear The clear text to hash
- * @return string Hashed password
- */
- public function hash_argon2id($clear) {
- if(!defined('PASSWORD_ARGON2ID')) {
- throw new \Exception('This PHP installation has no ARGON2ID support');
- }
- return password_hash($clear,PASSWORD_ARGON2ID);
- }
- /**
- * 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 a secure random generator
- *
- * @param int $min
- * @param int $max
- * @return int
- */
- protected function random($min, $max){
- try {
- return random_int($min, $max);
- } catch (\Exception $e) {
- // availability of random source is checked elsewhere in DokuWiki
- // we demote this to an unchecked runtime exception here
- throw new \RuntimeException($e->getMessage(), $e->getCode(), $e);
- }
- }
- }
|