105 lines
2.7 KiB
PHP
105 lines
2.7 KiB
PHP
<?php
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class Zend_Crypt
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{
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const TYPE_OPENSSL = 'openssl';
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const TYPE_HASH = 'hash';
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const TYPE_MHASH = 'mhash';
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protected static $_type = null;
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protected static $_supportedAlgosOpenssl = array(
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'md2',
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'md4',
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'mdc2',
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'rmd160',
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'sha',
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'sha1',
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'sha224',
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'sha256',
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'sha384',
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'sha512'
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);
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protected static $_supportedAlgosMhash = array(
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'adler32',
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'crc32',
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'crc32b',
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'gost',
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'haval128',
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'haval160',
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'haval192',
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'haval256',
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'md4',
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'md5',
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'ripemd160',
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'sha1',
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'sha256',
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'tiger',
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'tiger128',
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'tiger160'
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);
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public static function hash($algorithm, $data, $binaryOutput = false)
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{
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$algorithm = strtolower($algorithm);
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if (function_exists($algorithm)) {
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return $algorithm($data, $binaryOutput);
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}
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self::_detectHashSupport($algorithm);
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$supportedMethod = '_digest' . ucfirst(self::$_type);
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$result = self::$supportedMethod($algorithm, $data, $binaryOutput);
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}
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protected static function _detectHashSupport($algorithm)
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{
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if (function_exists('hash')) {
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self::$_type = self::TYPE_HASH;
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if (in_array($algorithm, hash_algos())) {
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return;
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}
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}
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if (function_exists('mhash')) {
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self::$_type = self::TYPE_MHASH;
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if (in_array($algorithm, self::$_supportedAlgosMhash)) {
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return;
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}
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}
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if (function_exists('openssl_digest')) {
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if ($algorithm == 'ripemd160') {
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$algorithm = 'rmd160';
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}
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self::$_type = self::TYPE_OPENSSL;
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if (in_array($algorithm, self::$_supportedAlgosOpenssl)) {
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return;
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}
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}
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require_once 'Zend/Crypt/Exception.php';
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throw new Zend_Crypt_Exception('\'' . $algorithm . '\' is not supported by any available extension or native function');
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}
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protected static function _digestHash($algorithm, $data, $binaryOutput)
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{
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return hash($algorithm, $data, $binaryOutput);
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}
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protected static function _digestMhash($algorithm, $data, $binaryOutput)
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{
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$constant = constant('MHASH_' . strtoupper($algorithm));
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$binary = mhash($constant, $data);
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if ($binaryOutput) {
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return $binary;
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}
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return bin2hex($binary);
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}
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protected static function _digestOpenssl($algorithm, $data, $binaryOutput)
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{
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if ($algorithm == 'ripemd160') {
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$algorithm = 'rmd160';
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}
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return openssl_digest($data, $algorithm, $binaryOutput);
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}
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} |