<?php
|
/**
|
* Created by PhpStorm.
|
* User: 80374806
|
* Date: 2016/8/31
|
* Time: 14:32
|
*/
|
|
class RC4 {
|
var $merKey;
|
|
function RC4($key){
|
$this->merKey = $key;
|
}
|
|
/*
|
* rc4加密算法
|
* $data 要加密的数据
|
*/
|
function encrypt($data)//$pwd密钥 $data需加密字符串
|
{
|
$key[] ="";
|
$box[] ="";
|
$cipher = "";
|
|
$pwd_length = strlen($this->merKey);
|
$data_length = strlen($data);
|
|
for ($i = 0; $i < 256; $i++)
|
{
|
$key[$i] = ord($this->merKey[$i % $pwd_length]);
|
$box[$i] = $i;
|
}
|
|
for ($j = $i = 0; $i < 256; $i++)
|
{
|
$j = ($j + $box[$i] + $key[$i]) % 256;
|
$tmp = $box[$i];
|
$box[$i] = $box[$j];
|
$box[$j] = $tmp;
|
}
|
|
for ($a = $j = $i = 0; $i < $data_length; $i++)
|
{
|
$a = ($a + 1) % 256;
|
$j = ($j + $box[$a]) % 256;
|
|
$tmp = $box[$a];
|
$box[$a] = $box[$j];
|
$box[$j] = $tmp;
|
|
$k = $box[(($box[$a] + $box[$j]) % 256)];
|
$cipher .= chr(ord($data[$i]) ^ $k);
|
}
|
|
return strtoupper($this->String2Hex($cipher));
|
}
|
|
//转成16进制
|
function String2Hex($string){
|
$hex='';
|
for ($i=0; $i < strlen($string); $i++){
|
$hex .= dechex(ord($string[$i]));
|
}
|
return $hex;
|
}
|
}
|
