本文章分享的这个php加密类是一个可以支持中文和英文的可加密码可解密的php实现类文件,有需要的同学可以参考一下,不过最好把文档编码设置为utf-8.
下面代码保存成MD5Crypt.class.php文件,代码如下:
- <?php
- class MD5Crypt {
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- public final static function mdsha($str) {
- $code = substr ( md5 ( $str ), 10 );
- $code .= substr ( sha1 ( $str ), 0, 28 );
- $code .= substr ( md5 ( $str ), 0, 22 );
- $code .= substr ( sha1 ( $str ), 16 ) . md5 ( $str );
- return self::chkToken () ? $code : null;
- }
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- private final static function chkToken() {
- return true;
- }
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- private final static function keyED($txt, $encrypt_key) {
- $encrypt_key = md5 ( $encrypt_key );
- $ctr = 0;
- $tmp = "";
- for($i = 0; $i < strlen ( $txt ); $i ++) {
- if ($ctr == strlen ( $encrypt_key ))
- $ctr = 0;
- $tmp .= substr ( $txt, $i, 1 ) ^ substr ( $encrypt_key, $ctr, 1 );
- $ctr ++;
- }
- return $tmp;
- }
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-
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- public final static function Encrypt($txt, $key) {
- srand ( ( double ) microtime () * 1000000 );
- $encrypt_key = md5 ( rand ( 0, 32000 ) );
- $ctr = 0;
- $tmp = "";
- for($i = 0; $i < strlen ( $txt ); $i ++) {
- if ($ctr == strlen ( $encrypt_key ))
- $ctr = 0;
- $tmp .= substr ( $encrypt_key, $ctr, 1 ) . (substr ( $txt, $i, 1 ) ^ substr ( $encrypt_key, $ctr, 1 ));
- $ctr ++;
- }
- $_code = md5 ( $encrypt_key ) . base64_encode ( self::keyED ( $tmp, $key ) ) . md5 ( $encrypt_key . $key );
- return self::chkToken () ? $_code : null;
- }
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- public final static function Decrypt($txt, $key) {
- $txt = self::keyED ( base64_decode ( substr ( $txt, 32, - 32 ) ), $key );
- $tmp = "";
- for($i = 0; $i < strlen ( $txt ); $i ++) {
- $md5 = substr ( $txt, $i, 1 );
- $i ++;
- $tmp .= (substr ( $txt, $i, 1 ) ^ $md5);
- }
- return self::chkToken () ? $tmp : null;
- }
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-
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- private static $_key = 'lau';
- }
- ?>
用法,代码如下:
- <?php
- define ( 'WORKSPACE', '.' . DIRECTORY_SEPARATOR );
- header ( "Content-Type: text/html; charset=utf-8" );
- include_once 'Core/Library/MD5Crypt.class.php';
- $a = MD5Crypt::Encrypt ( "A", 100 );
- echo "EnCode:" . $a, "<br />";
- echo "DeCode:" . MD5Crypt::Decrypt ( $a, 100 );
- ?>
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