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A complete example of PHP code encryption and decryption class implemented based on PHP

高洛峰
高洛峰Original
2016-12-20 15:26:141202browse

本文实例讲述了基于php实现的php代码加密解密类。分享给大家供大家参考,具体如下:

php 代码加密类,大家可以根据自己的需求进行修改,原类如下,该实例在ubuntu下测试没有问题。

<?php
class Encryption{
    private $c=&#39;&#39;;//存储密文
    private $s=&#39;&#39;,$q1,$q2,$q3,$q4,$q5,$q6;//存储生成的加密后的文件内容
    //如果不设置一个值,isset会表示不存在;
    private $file=&#39;&#39;;//读取文件的路径
    private $source=&#39;&#39;,$target=&#39;&#39;;
    //构造函数,实例化时调用初始化全局变量;
    public function __construct(){
      //初始化全局变量
      $this->initialVar();
      //echo "hello \n";
    }
    /*
    *@input $property_name,$value
    *@output
    *  魔法方法,对变量进行设置值;可根据需求进行处理。若直接去除if判断表示可用设置任何属性的值,包括不存在的属性;
    */
    public function __set($property_name,$value){
      //定义过的变量;
      if(isset($this->$property_name)){
        $this->$property_name = $value;
      }else{
        //异常处理,处理未声明的变量赋值;可根据需求进行处理。
        throw new Exception("property does not exist");
      }
    }
    //魔法方法 取出变量的值;
    public function __get($property_name){
      if(isset($this->$property_name)){
        return $this->$property_name;
      }else{
        //throw new Exception("property does not exist");
        return NULL;
      }
    }
    //取随机排序
    private function RandAbc($length=""){//随机排序取回
     $str="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
     return str_shuffle($str);
    }
    //对明文内容进行加密处理
    private function ciphertext($filename){
      //$filename=&#39;index.php&#39;;
      $T_k1=$this->RandAbc();
      $T_k2=$this->RandAbc();
      $vstr=file_get_contents($filename);
      $v1=base64_encode($vstr);
      $c=strtr($v1,$T_k1,$T_k2);
      $this->c=$T_k1.$T_k2.$c;
      return $this;
    }
    //初始化变量
    private function initialVar(){
      $this->q1="O00O0O";//base64_decode
      $this->q2="O0O000";//$c(原文经过strtr置换后的密文,由 目标字符+替换字符+base64_encode(‘原文内容&#39;)构成)
      $this->q3="O0OO00";//strtr
      $this->q4="OO0O00";//substr
      $this->q5="OO0000";//52
      $this->q6="O00OO0";//urldecode解析过的字符串(n1zb/ma5\vt0i28-pxuqy*6%6Crkdg9_ehcswo4+f37j)
    }
    //生成加密后的模板(复杂版本);
    private function model(){
      //$c = $this->c;
      //$this->initialVar();
      $this->s=&#39;<?php $&#39;.$this->q6.&#39;=urldecode("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A");$&#39;.
      $this->q1.&#39;=$&#39;.$this->q6.&#39;{3}.$&#39;.$this->q6.&#39;{6}.$&#39;.$this->q6.&#39;{33}.$&#39;.$this->q6.&#39;{30};$&#39;.$this->q3.&#39;=$&#39;.$this->q6.&#39;{33}.$&#39;.$this->q6.&#39;{10}.$&#39;
      .$this->q6.&#39;{24}.$&#39;.$this->q6.&#39;{10}.$&#39;.$this->q6.&#39;{24};$&#39;.$this->q4.&#39;=$&#39;.$this->q3.&#39;{0}.$&#39;.$this->q6.&#39;{18}.$&#39;.$this->q6.&#39;{3}.$&#39;.$this->q3.&#39;{0}
      .$&#39;.$this->q3.&#39;{1}.$&#39;.$this->q6.&#39;{24};$&#39;.$this->q5.&#39;=$&#39;.$this->q6.&#39;{7}.$&#39;.$this->q6.&#39;{13};$&#39;.$this->q1.&#39;.=$&#39;.$this->q6.&#39;{22}.$&#39;.$this->q6.&#39;{36}
      .$&#39;.$this->q6.&#39;{29}.$&#39;.$this->q6.&#39;{26}.$&#39;.$this->q6.&#39;{30}.$&#39;.$this->q6.&#39;{32}.$&#39;.$this->q6.&#39;{35}.$&#39;.$this->q6.&#39;{26}.$&#39;.$this->q6.&#39;{30};
      eval($&#39;.$this->q1.&#39;("&#39;.base64_encode(&#39;$&#39;.$this->q2.&#39;="&#39;.$this->c.&#39;";
      eval(\&#39;?>\&#39;.$&#39;.$this->q1.&#39;($&#39;.$this->q3.&#39;($&#39;.$this->q4.&#39;($&#39;.$this->q2.&#39;,$&#39;.$this->q5.&#39;*2),$&#39;.$this->q4.&#39;($&#39;.$this->q2.&#39;,$&#39;.$this->q5.&#39;,$&#39;.$this->q5.&#39;),
      $&#39;.$this->q4.&#39;($&#39;.$this->q2.&#39;,0,$&#39;.$this->q5.&#39;))));&#39;).&#39;"));?>&#39;;
      return $this;
    }
    //创建加密文件
    private function build($target){
      //$this->encodes("./index.php");
      //$this->model();
      $fpp1 = fopen($target,&#39;w&#39;);
      fwrite($fpp1,$this->s) or die(&#39;写入是失败!&#39;);
      fclose($fpp1);
      return $this;
    }
    //加密处理 连贯操作
    public function encode($file,$target){
      //$file = "index.php";
      //连贯操作其实就是利用函数处理完后返回自身
      $this->ciphertext($file)->model()->build($target);
      echo &#39;encode------&#39;.$target.&#39;-----ok<br/>&#39;;
    }
    //解密
    public function decode($file,$target=&#39;&#39;){
      //读取要解密的文件
      $fpp1 = file_get_contents($file);
      $this->decodeMode($fpp1)->build($target);
      echo &#39;decode------&#39;.$target.&#39;-----ok<br/>&#39;;
    }
    //解密模板,得到解密后的文本
    private function decodeMode($fpp1){
      //以eval为标志 截取为数组,前半部分为密文中的替换掉的函数名,后半部分为密文
      $m = explode(&#39;eval&#39;,$fpp1);
      //对系统函数的替换部分进行执行,得到系统变量
      $varStr = substr($m[0],strpos($m[0],&#39;$&#39;));
      //执行后,后续就可以使用替换后的系统函数名
      eval($varStr);
      //判断是否有密文
      if(!isset($m[1])){
        return $this;
      }
      //对密文进行截取 {$this->q4} substr
      $star = strripos($m[1],&#39;(&#39;);
      $end = strpos($m[1],&#39;)&#39;);
      $str = ${$this->q4}($m[1],$star,$end);
      //对密文解密 {$this->q1} base64_decode
      $str = ${$this->q1}($str);
      //截取出解密后的 核心密文
      $evallen = strpos($str,&#39;eval&#39;);
      $str = substr($str,0,$evallen);
      //执行核心密文 使系统变量被赋予值 $O0O000
      eval($str);
      //并不能将如下段封装,因为 ${$this->qn} 并不能在全文中起作用
      $this->s = ${$this->q1}(
        ${$this->q3}(
          ${$this->q4}(
            ${$this->q2},${$this->q5}*2
          ),
          ${$this->q4}(
            ${$this->q2},${$this->q5},${$this->q5}
          ),
          ${$this->q4}(
            ${$this->q2},0,${$this->q5}
          )
        )
      );
      return $this;
    }
    //递归读取并创建目标目录结构
    private function targetDir($target){
      if(!empty($target) ) {
        if(!file_exists($target)){
          mkdir($target,0777,true);
        }else{
          chmod($target,0777);
        }
      }
    }
    //递归解密 对指定文件夹下的php文件解密
    public function decodeDir($source,$target=""){
      if(is_dir($source)){
        $this->targetDir($target);
        $dir = opendir($source);
        while(false!=$file=readdir($dir))
        {
          //列出所有文件并去掉&#39;.&#39;和&#39;..&#39; 此处用的实例为thinkphp框架,所以默认排除里Thinkphp目录,用户可以按照自己的需求设置
          if($file!=&#39;.&#39; && $file!=&#39;..&#39; && $file !=&#39;ThinkPHP&#39;)
          {
            $path = $target.DIRECTORY_SEPARATOR.$file;
            $sourcePath = $source.DIRECTORY_SEPARATOR.$file;
            $this->decodeDir($sourcePath,$path);
          }
        }
      }else if(is_file($source)){
        $extension=substr($source,strrpos($source,&#39;.&#39;)+1);
        if(strtolower($extension)==&#39;php&#39;){
          $this->decode($source,$target);
        }else{
          //不是php的文件不处理
          copy($source, $target);
        }
        //return;
      }
    }
    //递归加密 对指定文件夹下的php文件加密
    public function encodeDir($source,$target){
      if(is_dir($source)){
        $this->targetDir($target);
        $dir = opendir($source);
        while(false!=$file=readdir($dir))
        {
          //列出所有文件并去掉&#39;.&#39;和&#39;..&#39;
          if($file!=&#39;.&#39; && $file!=&#39;..&#39; && $file !=&#39;ThinkPHP&#39;)
          {
            $path = $target.DIRECTORY_SEPARATOR.$file;
            $sourcePath = $source.DIRECTORY_SEPARATOR.$file;
            $this->encodeDir($sourcePath,$path);
          }
        }
      }else if(is_file($source)){
        $extension=substr($source,strrpos($source,&#39;.&#39;)+1);
        if(strtolower($extension)==&#39;php&#39;){
          $this->encode($source,$target);
        }else{
          copy($source, $target);
        }
      }
    }
}
$ob = new Encryption();
$ob->source = "/var/www/bookReservation";
$ob->target = "/var/www/jiami/bookReservation";
//解密指定文件
//$ob->decode(&#39;D:\\php\\WWW\\workspace\\weixin2\\Application\\Home\\Controller\\IndexController.class.php&#39;);
//$ob->decode(&#39;jiami.php&#39;);
//$ob->decode(&#39;dam6.php&#39;);
//对一个指定的文件目录进行加密
$ob->encodeDir($ob->source,$ob->target);
//对一个指定的文件目录进行解密
$ob->decodeDir($ob->target,"/var/www/jiami/bookReservationD");

希望本文所述对大家PHP程序设计有所帮助。

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