How to encrypt PHP source code? Solution to PHP binary encryption and decryption

Share 2 PHP source code encryption methods. This encryption method supports any PHP version.

Note that the encrypted PHP code does not require a third-party tool to decrypt it, just run it directly as usual.

Copy code The code is as follows:

 function encode_file_contents($filename) { 
 $ type=strtolower(substr(strrchr($filename,'.'),1)); 
 if ('php' == $type && is_file($filename) && is_writable($filename)) { // if it is PHP files are compressed and encoded if they are writable 
 $contents = file_get_contents($filename); // Determine whether the file has been encoded 
 $contents = php_strip_whitespace($filename); 

 // Remove PHP header and trailer tags 
 $headerPos = strpos($contents,' $footerPos = strrpos($contents,'?>'); 
 $contents = substr($contents, $headerPos + 5, $footerPos - $headerPos); 
 $encode = base64_encode(gzdeflate($contents)); // Start encoding 
 $encode = '"; 

 return file_put_contents($filename, $encode); 
 } 
 return false; 
 } 

 //Call function 
 $filename = 'dam.php'; 
 encode_file_contents($filename); 
 echo "OK, encryption Done! " 
 ?> 

Encryption method 2:

Copy code The code is as follows:

 function RandAbc($length = "") { // Return a random string 
 $str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; 
 return str_shuffle($str); 
 } 

 $filename = 'index.php'; //File to be encrypted 
 $T_k1 = RandAbc(); //Random key 1 
 $T_k2 = RandAbc() ; //Random key 2 
 $vstr = file_get_contents($filename); 
 $v1 = base64_encode($vstr); 
 $c = strtr($v1, $T_k1, $T_k2); / /Replace the corresponding characters according to the key. 
 $c = $T_k1.$T_k2.$c; 
 $q1 = "O00O0O"; 
 $q2 = "O0O000"; 
 $q3 = "O0OO00"; 
 $q4 = "OO0O00"; 
 $q5 = "OO0000"; 
 $q6 = "O00OO0"; 
 $s = '$'.$q6.'=urldecode("%6E1%7A%62% 2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77% 6F4%2B%6637%6A");$'.$q1.'=$'.$q6.'{3}.$'.$q6.'{6}.$'.$q6.'{33} .$'.$q6.'{30};$'.$q3.'=$'.$q6.'{33}.$'.$q6.'{10}.$'.$q6.'{ 24}.$'.$q6.'{10}.$'.$q6.'{24};$'.$q4.'=$'.$q3.'{0}.$'.$q6. '{18}.$'.$q6.'{3}.$'.$q3.'{0}.$'.$q3.'{1}.$'.$q6.'{24};$ '.$q5.'=$'.$q6.'{7}.$'.$q6.'{13};$'.$q1.'.=$'.$q6.'{22}.$ '.$q6.'{36}.$'.$q6.'{29}.$'.$q6.'{26}.$'.$q6.'{30}.$'.$q6.' {32}.$'.$q6.'{35}.$'.$q6.'{26}.$'.$q6.'{30};eval($'.$q1.'("'. base64_encode('$'.$q2.'="'.$c.'";eval('?>'.$'.$q1.'($'.$q3.'($'.$q4. '($'.$q2.',$'.$q5.'*2),$'.$q4.'($'.$q2.',$'.$q5.',$'.$q5 .'),$'.$q4.'($'.$q2.',0,$'.$q5.'))));').'"));'; 

 $s = ''; 
 //echo $s; 
 // Generate encrypted PHP file 
 $fpp1 = fopen('temp_'.$filename, 'w'); 
 fwrite($fpp1, $s) or die('Write file error'); 

 ?> 
 

Actually, there are many ways to encrypt PHP source code, such as the free Micro Shield PHP encryption, and the online encryption provided by www.phpjm.net, but phpjm is more complicated.

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In addition, share a PHP class that can perform binary encryption and decryption of text content. The code is as follows:

Copy the code The code is as follows:

 class text_auth  
 {  
     var $n_iter;  

     function text_auth()  
     {  
         $this->setIter(32);  
     }  

     function setIter($n_iter)  
     {  
         $this->n_iter = $n_iter;  
     }  

     function getIter()  
     {  
         return $this->n_iter;  
     }  

     function encrypt($data, $key)  
     {  
         $n = $this->_resize($data, 4);  

         $data_long[0]   = $n;  
         $n_data_long    = $this->_str2long(1, $data, $data_long);  

         $n = count($data_long);  
         if (($n & 1) == 1) {  
             $data_long[$n] = chr(0);  
             $n_data_long++;  
         }  

         $this->_resize($key, 16, true);  
         if ( '' == $key )  
             $key = '0000000000000000';  

         $n_key_long = $this->_str2long(0, $key, $key_long);  

         $enc_data   = '';  
         $w          = array(0, 0);  
         $j          = 0;  
         $k          = array(0, 0, 0, 0);  
         for ($i = 0; $i < $n_data_long; ++$i) {  
             if ($j + 4 <= $n_key_long) {  
                 $k[0] = $key_long[$j];  
                 $k[1] = $key_long[$j + 1];  
                 $k[2] = $key_long[$j + 2];  
                 $k[3] = $key_long[$j + 3];  
             } else {  
                 $k[0] = $key_long[$j % $n_key_long];  
                 $k[1] = $key_long[($j + 1) % $n_key_long];  
                 $k[2] = $key_long[($j + 2) % $n_key_long];  
                 $k[3] = $key_long[($j + 3) % $n_key_long];  
             }  
             $j = ($j + 4) % $n_key_long;  

             $this->_encipherLong($data_long[$i], $data_long[++$i], $w, $k);  

             $enc_data .= $this->_long2str($w[0]);  
             $enc_data .= $this->_long2str($w[1]);  
         }  

         return $enc_data;  
     }  

     function decrypt($enc_data, $key)  
     {  
         $n_enc_data_long = $this->_str2long(0, $enc_data, $enc_data_long);  

         $this->_resize($key, 16, true);  
         if ( '' == $key )  
             $key = '0000000000000000';  

         $n_key_long = $this->_str2long(0, $key, $key_long);  

         $data   = '';  
         $w      = array(0, 0);  
         $j      = 0;  
         $len    = 0;  
         $k      = array(0, 0, 0, 0);  
         $pos    = 0;  

         for ($i = 0; $i < $n_enc_data_long; $i += 2) {  
             if ($j + 4 <= $n_key_long) {  
                 $k[0] = $key_long[$j];  
                 $k[1] = $key_long[$j + 1];  
                 $k[2] = $key_long[$j + 2];  
                 $k[3] = $key_long[$j + 3];  
             } else {  
                 $k[0] = $key_long[$j % $n_key_long];  
                 $k[1] = $key_long[($j + 1) % $n_key_long];  
                 $k[2] = $key_long[($j + 2) % $n_key_long];  
                 $k[3] = $key_long[($j + 3) % $n_key_long];  
             }  
             $j = ($j + 4) % $n_key_long;  

             $this->_decipherLong($enc_data_long[$i], $enc_data_long[$i + 1], $w, $k);  

             if (0 == $i) {  
                 $len = $w[0];  
                 if (4 <= $len) {  
                     $data .= $this->_long2str($w[1]);  
                 } else {  
                     $data .= substr($this->_long2str($w[1]), 0, $len % 4);  
                 }  
             }else {  
                 $pos = ($i - 1) * 4;  
                 if ($pos + 4 <= $len) {  
                     $data .= $this->_long2str($w[0]);  

                     if ($pos + 8 <= $len) {  
                         $data .= $this->_long2str($w[1]);  
                     } elseif ($pos + 4 < $len) {  
                         $data .= substr($this->_long2str($w[1]), 0, $len % 4);  
                     }  
                 } else {  
                     $data .= substr($this->_long2str($w[0]), 0, $len % 4);  
                 }  
             }  
         }  
         return $data;  
     }  

     function _encipherLong($y, $z, &$w, &$k)  
     {  
         $sum    = (integer) 0;  
         $delta  = 0x9E3779B9;  
         $n      = (integer) $this->n_iter;  

         while ($n-- > 0) {  
             $y      = $this->_add($y,  
                                   $this->_add($z << 4 ^ $this->_rshift($z, 5), $z) ^  
                                     $this->_add($sum, $k[$sum & 3]));  
             $sum    = $this->_add($sum, $delta);  
             $z      = $this->_add($z,  
                                   $this->_add($y << 4 ^ $this->_rshift($y, 5), $y) ^  
                                     $this->_add($sum, $k[$this->_rshift($sum, 11) & 3]));  
         }  

         $w[0] = $y;  
         $w[1] = $z;  
     }  

     function _decipherLong($y, $z, &$w, &$k)  
     {  
         $sum    = 0xC6EF3720;  
         $delta  = 0x9E3779B9;  
         $n      = (integer) $this->n_iter;  

         while ($n-- > 0) {  
             $z      = $this->_add($z,  
                                   -($this->_add($y << 4 ^ $this->_rshift($y, 5), $y) ^  
                                         $this->_add($sum, $k[$this->_rshift($sum, 11) & 3])));  
             $sum    = $this->_add($sum, -$delta);  
             $y      = $this->_add($y,  
                                   -($this->_add($z << 4 ^ $this->_rshift($z, 5), $z) ^  
                                         $this->_add($sum, $k[$sum & 3])));  
         }  

         $w[0] = $y;  
         $w[1] = $z;  
     }  

     function _resize(&$data, $size, $nonull = false)  
     {  
         $n      = strlen($data);  
         $nmod   = $n % $size;  
         if ( 0 == $nmod )  
             $nmod = $size;  

         if ($nmod > 0) {  
             if ($nonull) {  
                 for ($i = $n; $i < $n - $nmod + $size; ++$i) {  
                     $data[$i] = $data[$i % $n];  
                 }  
             } else {  
                 for ($i = $n; $i < $n - $nmod + $size; ++$i) {  
                     $data[$i] = chr(0);  
                 }  
             }  
         }  
         return $n;  
     }  

     function _hex2bin($str)  
     {  
         $len = strlen($str);  
         return pack('H' . $len, $str);  
     }  

     function _str2long($start, &$data, &$data_long)  
     {  
         $n = strlen($data);  

         $tmp    = unpack('N*', $data);  
         $j      = $start;  

         foreach ($tmp as $value)  
             $data_long[$j++] = $value;  

         return $j;  
     }  

     function _long2str($l)  
     {  
         return pack('N', $l);  
     }  

     function _rshift($integer, $n)  
     {  
         if (0xffffffff < $integer || -0xffffffff > $integer) {  
             $integer = fmod($integer, 0xffffffff + 1);  
         }  

         if (0x7fffffff < $integer) {  
             $integer -= 0xffffffff + 1.0;  
         } elseif (-0x80000000 > $integer) {  
             $integer += 0xffffffff + 1.0;  
         }  

         if (0 > $integer) {  
             $integer &= 0x7fffffff;  
             $integer >>= $n;  
             $integer |= 1 << (31 - $n);  
         } else {  
             $integer >>= $n;  
         }  

         return $integer;  
     }  

     function _add($i1, $i2)  
     {  
         $result = 0.0;  

         foreach (func_get_args() as $value) {  
             if (0.0 > $value) {  
                 $value -= 1.0 + 0xffffffff;  
             }  

             $result += $value;  
         }  

         if (0xffffffff < $result || -0xffffffff > $result) {  
             $result = fmod($result, 0xffffffff + 1);  
         }  

         if (0x7fffffff < $result) {  
             $result -= 0xffffffff + 1.0;  
         } elseif (-0x80000000 > $result) {  
             $result += 0xffffffff + 1.0;  
         }  
         return $result;  
     }  
 }
 ?> 
The usage method is as follows: 
// Encryption process 
view sourceprint?
 $text_file = S_ROOT . './456.php'; 
 $str = @ file_get_contents($text_file); 

 require_once S_ROOT . "./text_auth.php"; 
 $text_auth = new text_auth(64); 

 $str = $text_auth->encrypt ($str, "qianyunlai.com"); 

 $filename = S_ROOT . './789.php'; // The encrypted text is binary and cannot be viewed normally with an ordinary text editor 
 file_put_contents($filename, $str); 
//Decryption process
view sourceprint
?01 $text_file = S_ROOT . './789.php'; 
 $str = @file_get_contents($text_file ); 

 require_once S_ROOT . "./text_auth.php"; 
 $text_auth = new text_auth(64); 

 $str = $text_auth->decrypt($str, "qianyunlai.com"); 

 $filename = S_ROOT . './456.php'; 
 file_put_contents($filename, $str); 