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39 lines
921 B
39 lines
921 B
<?php
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defined('BASE_PATH') OR exit('No direct script access allowed');
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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 += $keylength) {
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$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 += $keylength) {
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$coded .= substr($str, $i, $keylength) ^ $key;
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}
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return $coded;
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}
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