Encryption method for PHP source code program_PHP tutorial

The article introduces two methods to encrypt the PHP program itself. Our common method is base64_encode(gzdeflate($contents)) to encrypt. The second method is rare and friends in need can also refer to it.

Example 1

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

The code is as follows

代码如下

复制代码

function encode_file_contents($filename) { $type=strtolower(substr(strrchr($filename,'.'),1)); if('php'==$type && is_file($filename) && is_writable($filename)){// 如果是PHP文件 并且可写 则进行压缩编码 $contents = file_get_contents($filename);// 判断文件是否已经被编码处理 $contents = php_strip_whitespace($filename); // 去除PHP头部和尾部标识 $headerPos = strpos($contents,' $footerPos = strrpos($contents,'?>'); $contents = substr($contents,$headerPos+5,$footerPos-$headerPos); $encode = base64_encode(gzdeflate($contents));// 开始编码 $encode = '"; return file_put_contents($filename,$encode); } return false; } //调用函数 $filename='dam.php'; encode_file_contents($filename); echo "OK,加密完成！" ?>

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代码如下

复制代码

function RandAbc($length=""){//返回随机字符串 $str="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; return str_shuffle($str); } $filename='dam.php'; $T_k1=RandAbc();//随机密匙1 $T_k2=RandAbc();//随机密匙2 $vstr=file_get_contents($filename);//要加密的文件 $v1=base64_encode($vstr); $c=strtr($v1,$T_k1,$T_k2);//根据密匙替换对应字符。 $c=$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.'))));').'"));'; $s=' '.$s. ' ?>'; echo "OK,加密完成！"; //生成 加密后的PHP文件 $fpp1 = fopen('dam.php','w'); fwrite($fpp1,$s) or die('写文件错误'); ?>

function encode_file_contents($filename) {
$type=strtolower(substr(strrchr($filename,'.'),1));
if('php'==$type && is_file($filename) && is_writable($filename)){// If it is a PHP file and can be written, compress it and encode it
$contents = file_get_contents($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);

Example 2

The code is as follows

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function RandAbc($length=""){//Return a random string $str="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; Return str_shuffle($str); } $filename='dam.php'; $T_k1=RandAbc();//Random key 1 $T_k2=RandAbc();//Random key 2 $vstr=file_get_contents($filename);//The file to be encrypted $v1=base64_encode($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. '))));').'"));'; $s=' '.$s. ' ?>'; echo "OK, encryption completed!"; //Generate encrypted PHP file $fpp1 = fopen('dam.php','w'); fwrite($fpp1,$s) or die('Error writing file'); ?> http://www.bkjia.com/PHPjc/629667.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629667.htmlTechArticleThe article introduces two methods to encrypt the PHP program itself. Our common method is base64_encode(gzdeflate($contents) ) is encrypted in this way. The second method is rare. Friends in need can also participate...