116 lines
3.2 KiB
PHP
116 lines
3.2 KiB
PHP
<?php
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/**
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* Playcool Project
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*
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* LICENSE
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*
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* http://www.playcool.com/license/ice
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*
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* @category Zeed
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* @package Zeed_Encrypt
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* @subpackage ChangeMe
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* @copyright Copyright (c) 2008 Zeed Technologies PRC Inc. (http://www.inews.com.cn)
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* @author xSharp ( GTalk: xSharp@gmail.com )
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* @since Jun 4, 2009
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* @version SVN: $Id: Log.php 4637 2009-12-07 09:12:24Z xsharp $
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*/
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class Zeed_Encrypt
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{
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/**
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* 加密字符串
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*
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* @param string $hash 加密类型，md5 对应 Zeed_Encrypt_Md5 处理
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* @param string $data 需要被加密额数据
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* @param string $key 加密密钥
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* @return string
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*/
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public static function encode($hash, $data, $key = null, $encrypted = false)
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{
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$encodeClass = "Zeed_Encrypt_" . ucwords($hash);
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$encodeString = $data;
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if (class_exists($encodeClass) && is_subclass_of($encodeClass, 'Zeed_Encrypt_Abstract')) {
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$encryper = new $encodeClass($data, $key, $encrypted);
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$encodeString = $encryper->encrypt();
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}
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return $encodeString;
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}
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/**
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* 解密字符串
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*
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* @param string $hash 解密类型
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* @param string $data 需要被解密的数据
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* @param string $key 解密密钥
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* @return string
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* @see Zeed_Encrypt::encode()
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*/
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public static function decode($hash, $data, $key = null)
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{
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$encodeClass = "Zeed_Encrypt_" . ucwords($hash);
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$decodeString = $data;
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if (class_exists($encodeClass) && is_subclass_of($encodeClass, 'Zeed_Encrypt_Abstract')) {
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if (method_exists($encodeClass, 'decrypt')) {
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$decrypt = new $encodeClass($data, $key);
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$decodeString = $decrypt->decrypt();
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}
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}
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return $decodeString;
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}
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/**
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* 比较参数密文与明文使用指定的加密方式后是否相等
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*
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* @param string $encodedString4Validate
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* @param string $encodeMethod
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* @param string $data
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* @param string $key
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* @return boolean
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*/
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public static function validate($encodedString4Validate, $encodeMethod, $data, $key)
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{
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$encodeClass = "Zeed_Encrypt_" . ucwords($encodeMethod);
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$encodeString = $data;
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if (class_exists($encodeClass) && is_subclass_of($encodeClass, 'Zeed_Encrypt_Abstract')) {
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$encryper = new $encodeClass($data, $key);
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$encodeString = $encryper->encrypt();
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}
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return $encodedString4Validate == $encodeString;
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}
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/**
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* 获取密码杂质，可用于密码储存算法
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*
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* @param integer $length
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* @return string
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*/
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public static function generateSalt($length = 4)
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{
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$salt = '';
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for ($i = 0; $i < $length; $i ++) {
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$salt .= chr(rand(33, 126));
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}
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return $salt;
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}
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private static function strcrc32($text)
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{
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$crc = crc32($text);
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if ($crc & 0x80000000) {
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$crc ^= 0xffffffff;
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$crc += 1;
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$crc = - $crc;
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}
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return $crc;
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}
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}
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// End ^ LF ^ UTF-8
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