61 lines
1.6 KiB
PHP
61 lines
1.6 KiB
PHP
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<?php
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/**
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* ECSHOP 加密解密类
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* ============================================================================
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* * 版权所有 2005-2012 上海商派网络科技有限公司，并保留所有权利。
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* 网站地址: http://www.ecshop.com；
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* ----------------------------------------------------------------------------
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* 这不是一个自由软件！您只能在不用于商业目的的前提下对程序代码进行修改和
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* 使用；不允许对程序代码以任何形式任何目的的再发布。
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* ============================================================================
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* $Author: liubo $
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* $Id: lib_code.php 17217 2011-01-19 06:29:08Z liubo $
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*/
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if (!defined('IN_ECS'))
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{
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die('Hacking attempt');
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}
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/**
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* 加密函数
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* @param string $str 加密前的字符串
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* @param string $key 密钥
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* @return string 加密后的字符串
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*/
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function encrypt($str, $key = AUTH_KEY)
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{
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$coded = '';
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$keylength = strlen($key);
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for ($i = 0, $count = strlen($str); $i < $count; $i += $keylength)
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{
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$coded .= substr($str, $i, $keylength) ^ $key;
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}
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return str_replace('=', '', base64_encode($coded));
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}
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/**
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* 解密函数
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* @param string $str 加密后的字符串
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* @param string $key 密钥
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* @return string 加密前的字符串
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*/
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function decrypt($str, $key = AUTH_KEY)
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{
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$coded = '';
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$keylength = strlen($key);
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$str = base64_decode($str);
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for ($i = 0, $count = strlen($str); $i < $count; $i += $keylength)
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{
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$coded .= substr($str, $i, $keylength) ^ $key;
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}
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return $coded;
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}
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?>
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