方式一：
<?php
/**
* Created by PhpStorm.
* User: Yang
* Date: 2019/10/16
* Time: 10:25
*/
class Encipher {
private $_sourceFile = '';
private $_encodedFile = '';
private $_comments = array(
'Author: Yang',
'Email: 1017836267@qq.com'
);
public function __construct($sourceFile, $encodeFile, $comments = array())
{
!empty($sourceFile) && $this->_sourceFile = $sourceFile;
!empty($encodeFile) && $this->_encodedFile = $encodeFile;
!empty($comments) && $this->comments = (array)$comments;
if (empty($this->_sourceFile) || !file_exists($this->_sourceFile)) {
exit("Source file does not exist.");
}
if (empty($this->_encodedFile) || !file_exists($this->_encodedFile)) {
//如果源文件不存在，则创建
fopen($this->_encodedFile, "w");
}
}
/**
* 返回随机字符串
* @return string
*/
private function createRandKey()
{ // 返回随机字符串
$str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
return str_shuffle($str);
}
/**
* 加密函数
* @return bool
*/
public function encode() {
//随机密匙1
$k1 = $this->createRandKey();
//随机密匙2
$k2 = $this->createRandKey();
// 获取源文件内容
$sourceContent = file_get_contents($this->_sourceFile);
//base64加密
$base64 = base64_encode($sourceContent);
//根据密匙替换对应字符。
$c = strtr($base64, $k1, $k2);
$c = $k1 . $k2 . $c;
$q1 = "O00O0O";
$q2 = "O0O000";
$q3 = "O0OO00";
$q4 = "OO0O00";
$q5 = "OO0000";
$q6 = "O00OO0";
$encodeContent = '$' . $q6 . '=urldecode("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A");$' . $q1 . '=$' . $q6 . '{3}.$' . $q6 . '{6}.$' . $q6 . '{33}.$' . $q6 . '{30};$' . $q3 . '=$' . $q6 . '{33}.$' . $q6 . '{10}.$' . $q6 . '{24}.$' . $q6 . '{10}.$' . $q6 . '{24};$' . $q4 . '=$' . $q3 . '{0}.$' . $q6 . '{18}.$' . $q6 . '{3}.$' . $q3 . '{0}.$' . $q3 . '{1}.$' . $q6 . '{24};$' . $q5 . '=$' . $q6 . '{7}.$' . $q6 . '{13};$' . $q1 . '.=$' . $q6 . '{22}.$' . $q6 . '{36}.$' . $q6 . '{29}.$' . $q6 . '{26}.$' . $q6 . '{30}.$' . $q6 . '{32}.$' . $q6 . '{35}.$' . $q6 . '{26}.$' . $q6 . '{30};eval($' . $q1 . '("' . base64_encode('$' . $q2 . '="' . $c . '";eval(\'?>\'.$' . $q1 . '($' . $q3 . '($' . $q4 . '($' . $q2 . ',$' . $q5 . '*2),$' . $q4 . '($' . $q2 . ',$' . $q5 . ',$' . $q5 . '),$' . $q4 . '($' . $q2 . ',0,$' . $q5 . '))));') . '"));';
$headers = array_map('trim', array_merge(array('/*'), $this->_comments, array('*/')));
$enCode = "<?php"."\r\n".implode("\r\n", $headers) . "\r\n".$encodeContent."\r\n"."?>";
$file = fopen($this->_encodedFile, 'w');
return fwrite($file, $enCode) or die('写文件错误');
}
}
$e = new Encipher("index.php", "test_1.php");
$e ->encode();
echo "加密成功";
方式二：
require_once "./doEncode.php";
$app = str_replace('\\', '/', dirname(__FILE__));
$encipher = new DoCodeLock($app."/test", $app."/test");
$encipher->encode();
doEncode.php
<?php
/**
* Created by PhpStorm.
* User: 25754
* Date: 2019/10/16
* Time: 9:32
*/
class DoCodeLock
{
/**
* The file/path which you want to encode.
*/
public $source_file = '';
/**
* The file/path which you want to save the encoded file/path.
*/
public $encoded_file = '';
/**
* Default comments.
*/
public $comments = array(
'Author: Yang',
'Email: 1017836267@qq.com'
);
/**
* advanced encryption
*/
public $advancedEncryption = false;
/**
* variable name length.
*/
public $varnameLength = 8;
public function __construct($source_file = '', $encoded_file = '', $comments = array())
{
!empty($source_file) && $this->source_file = $source_file;
!empty($encoded_file) && $this->encoded_file = $encoded_file;
!empty($comments) && $this->comments = (array)$comments;
if (empty($this->source_file) || !file_exists($this->source_file)) {
exit("Source file/path does not exist.");
}
if (empty($this->encoded_file) || !file_exists($this->encoded_file)) {
exit("Encoded file/path does not exist.");
}
}
public function encode()
{
list($paths, $files) = $this->_getPathsAndFiles($this->source_file);
$this->_createPaths($paths);
$this->_encryptFiles($files);
}
private function _getPathsAndFiles($dir)
{
$files = $paths = array();
if (is_dir($dir)) {
$_files = scandir($dir);
foreach ($_files as $key => $file) {
if ($file == '.' || $file == '..') {
continue;
}
if (is_dir($dir . "/" . $file)) {
$paths[] = $file;
list($subPaths, $subFiles) = $this->_getPathsAndFiles($dir . "/" . $file);
$subPaths = $this->_addBasePath($subPaths, $file);
$subFiles = $this->_addBasePath($subFiles, $file);
$paths = array_merge($paths, $subPaths);
$files = array_merge($files, $subFiles);
} else {
$files[] = $file;
}
}
} elseif (is_file($dir)) {
$files[] = basename($dir);
}
return array($paths, $files);
}
private function _addBasePath($files, $base)
{
foreach ($files as $key => $file) {
$files[$key] = $base . "/" . $file;
}
return $files;
}
private function _createPaths($paths)
{
foreach ($paths as $path) {
!is_dir($this->encoded_file . "/" . $path) && mkdir($this->encoded_file . "/" . $path, 0700);
}
}
private function _encryptFiles($files)
{
foreach ($files as $file) {
if ($this->advancedEncryption) {
$this->_encryptFile($file);
} else {
$this->_setHumanUnreadable($file);
}
}
}
private function _setHumanUnreadable($file)
{
$code = $this->_getPHPCode($file);
$regVars = $this->_setVarName($this->_getMatchedVariables($code));
list($usedFuncs, $funcChars) = $this->_getMatchedFunctions($code);
if (!empty($usedFuncs)) {
$_tmp = $this->_setVarName(array('funcStrVar' => ''), $regVars);
$funcStrVar = $_tmp['funcStrVar'];
$usedFuncMaps = $this->_setVarName($usedFuncs, $regVars);
$regVars = array_merge($usedFuncMaps, $regVars);
} else {
$usedFuncMaps = array();
}
$funcVarDefCode = $this->_getFuncVarDefCode($usedFuncMaps, $funcChars, $funcStrVar);
$headers = array_map('trim', array_merge(array('<?php', '/*'), $this->comments, array('*/')));
$enCode = implode("\r\n", $headers) . "\r\n" . $funcVarDefCode . strtr($code, $regVars);
$this->_saveEncryptFile($file, $enCode);
}
private function _encryptFile($file)
{
list($enkey, $dekey) = $this->_getKeyPairs();
$baseCodeOfHostedCode = $this->_getBaseCodeOfHostedCode();
$decodeCodeOfHostedCode = $this->_getDecodeCodeOfHostedCode($file, $enkey, $dekey);
$hostedCode = $baseCodeOfHostedCode . $decodeCodeOfHostedCode;
$regVars = $this->_setVarName($this->_getMatchedVariables($hostedCode));
list($usedFuncs, $funcChars) = $this->_getMatchedFunctions($hostedCode);
if (!empty($usedFuncs)) {
$_tmp = $this->_setVarName(array('funcStrVar' => ''), $regVars);
$funcStrVar = $_tmp['funcStrVar'];
$usedFuncMaps = $this->_setVarName($usedFuncs, $regVars);
$regVars = array_merge($usedFuncMaps, $regVars);
} else {
$usedFuncMaps = array();
}
//$prefixCode: define function name & base extra code.
$funcVarDefCode = $this->_getFuncVarDefCode($usedFuncMaps, $funcChars, $funcStrVar);
$prefixCode = preg_replace("/\r|\n|\s+/is", "", $funcVarDefCode . strtr($baseCodeOfHostedCode, $regVars));
$headers = array_map('trim', array_merge(array('<?php', '/*'), $this->comments, array('*/')));
$hookKey = strtr(md5(implode("\r\n", $headers) . "\r\n" . $prefixCode), $enkey, $dekey);
$evalEmbedCode = $this->_getEvalEmbedCode($decodeCodeOfHostedCode, $regVars, $enkey, $dekey);
/**
* eval(base64_decode(
* str_replace("\$hookKey", '', strtr($hookKey.$evalEmbedCode, $dekey, $enkey))
* ));
* $unset;
*/
$unset = 'unset(' . $funcStrVar;
foreach ($regVars as $var) {
$unset .= ',' . $var;
}
$unset .= ');';
$evalCode = "@eval(" . $regVars["base64_decode"] . "(" . $regVars["str_replace"] . "(" . $regVars["\$hookKey"] . ",''," . $regVars["strtr"] . "('" . $hookKey . $evalEmbedCode . "','" . $dekey . "','" . $enkey . "'))));" . $unset;
$originalEncodedCode = $this->_getPHPEncode($file, $enkey, $dekey);
$enCode = implode("\r\n", $headers) . "\r\n" . $prefixCode . $evalCode . "return;?>\r\n" . $originalEncodedCode;
$this->_saveEncryptFile($file, $enCode, $enkey, $dekey);
}
/**
* The encoded code needs extra code
*/
private function _getBaseCodeOfHostedCode()
{
$code = <<<EOT
\$farrs = file(str_replace('\\\\', '/', __FILE__));
\$enCode = array_pop(\$farrs);
\$phpCode = array_pop(\$farrs);
\$fstrs = implode('', \$farrs) . substr(\$phpCode, 0, strrpos(\$phpCode, '@ev'));
\$hookKey = md5(\$fstrs);
\$farrs = \$phpCode = \$fstrs = NULL;
EOT;
return $code;
}
/**
* The encoded code needs decode code
* if the licence is generated, also need to process it.
*/
private function _getDecodeCodeOfHostedCode($file, $enkey, $dekey)
{
$code = <<<EOT
eval(base64_decode(strtr(\$enCode, '{$dekey}', '{$enkey}')));
\$enCode = NULL;
EOT;
return $code;
}
private function _getFuncVarDefCode($usedFuncMaps, $funcChars, $funcStrVar)
{
//all the chars of function name
$funcStr = implode("", $funcChars);
//set variable name's value for each variable of function name
$funcVarValArr = $this->_getFuncVarvalArr($usedFuncMaps, $funcChars, $funcStrVar);
//encoded code define function name string.
$code = $funcStrVar . "='{$funcStr}';";
foreach ($usedFuncMaps as $func => $val) {
$code .= $val . "= " . $funcVarValArr[$func] . ";\n";
}
return $code;
}
private function _getEvalEmbedCode($decodeCodeOfHostedCode, $regVars, $enkey, $dekey)
{
$code = preg_replace("/\r|\n/is", "", strtr($decodeCodeOfHostedCode, $regVars));
//replace multi space to one, and encode it via base64
$code = base64_encode(preg_replace("/\s{2,}/is", " ", $code));
$code = strtr($code, $enkey, $dekey);
return $code;
}
/**
* get function names and chars for all functions
*/
private function _getMatchedFunctions($code)
{
//match all function name
preg_match_all("/([a-z_0-9]+)\(/is", $code, $matches);
$usedFuncs = array_unique($matches[1]);
if (false !== ($key = array_search('eval', $usedFuncs))) {
unset($usedFuncs[$key]);
}
$funcChars = array_unique(preg_split("//is", implode("", $usedFuncs), -1, PREG_SPLIT_NO_EMPTY));
shuffle($funcChars);
return array(array_flip($usedFuncs), $funcChars);
}
/**
* get variable names
*/
private function _getMatchedVariables($code)
{
preg_match_all("/(\\\$[a-z0-9]+)\s*\=/is", $code, $matches);
return array_flip($matches[1]);
}
private function _getFuncVarvalArr($usedFuncMaps, $funcChars, $funcStrVar)
{
$funcVarValArr = array();
foreach ($usedFuncMaps as $func => $_val) {
$val = "";
for ($i = 0, $len = strlen($func); $i < $len; $i++) {
if ($val == "") {
$val = $funcStrVar . "{" . array_search($func{$i}, $funcChars) . "}";
} else {
$val = $val . "." . $funcStrVar . "{" . array_search($func{$i}, $funcChars) . "}";
}
}
$funcVarValArr[$func] = $val;
}
return $funcVarValArr;
}
/**
* get php pure code, trim php tag
*/
private function _getPHPCode($file)
{
$from = $this->source_file . '/' . $file;
$str = file_get_contents($from);
$str = preg_replace("/^[\s\xef\xbb\xbf]*<\?php/is", "", $str);
$str = trim(preg_replace("/\?>\s*$/is", "", $str));
return $str;
}
/**
* get php encoded code
*/
private function _getPHPEncode($file, $enkey, $dekey)
{
$code = $this->_getPHPCode($file);
$enCode = strtr(base64_encode($code), $enkey, $dekey);
return $enCode;
}
private function _getKeyPairs()
{
$enkey = $this->_getKeyStr();
$dekey = $this->_getKeyStr();
while ($enkey === $dekey) {
$dekey = $this->_getKeyStr();
}
return array($enkey, $dekey);
}
private function _getKeyStr()
{
$base64str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
for ($i = 127; $i <= 160; $i++) {
$base64str .= chr($i);
}
$baseChars = array_filter(preg_split("//is", $base64str));
$baseChars[] = 0;
shuffle($baseChars);
return implode("", $baseChars);
}
private function _setVarName($funcs, $filter = array())
{
$length = $this->varnameLength;
$basestr = $this->_getInvisibleStr($length);
$count = count($funcs);
if ($count == 0) {
return array();
}
$varArr = array();
do {
$randStr = substr("\$" . str_shuffle($basestr), 0, rand(2, $length));
if (!in_array($randStr, $varArr) && !in_array($randStr, $filter)) {
$varArr[] = $randStr;
$count--;
}
} while ($count > 0);
return array_combine(array_keys($funcs), $varArr);
}
/**
* legal variable names: '[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*'
* Invisiable string's ascii is from 127 to 255:'[\x7f-\xff][\x7f-\xff]*'
* param $length the variable name's length.
*/
private function _getInvisibleStr($length = 10)
{
$str = '';
for ($i = 0; $i < $length; $i++) {
$num = rand(127, 255);
$str .= chr($num);
}
return $str;
}
private function _saveEncryptFile($file, $enCode, $enkey = null, $dekey = null)
{
$to = $this->encoded_file . '/' . $file;
file_put_contents($to, $enCode);
echo $to . "\n";
}
}
