speedport_hybrid_configtool.php

<?php
define("AES256CBC_KEY", hex2bin("DD1FBB7596D0D58BBF336ABA391366ED3ED7460849BB9EFAB9649C999863BF25"));
define("AES256CBC_IV", hex2bin("B380E17A0C476E8A480B55253ABAE666"));

function decode($input) {
	$input = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, AES256CBC_KEY, $input, MCRYPT_MODE_CBC, AES256CBC_IV);;
	$result = gzuncompress($input);
	
	if (substr($result, -1) == "\0")
		$result = substr($result, 0, -1);
	
	return $result;
}

function encode($input) {
	if (substr($input, -1) != "\0")
		$input .= "\0";
	
	$input = gzcompress($input, 9);
	$result = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, AES256CBC_KEY, $input, MCRYPT_MODE_CBC, AES256CBC_IV);
		
	return $result;
}

if (PHP_SAPI !== 'cli') {
	echo "only for cli\n";
	exit;
}

if ($argc < 4) {
	echo "Usage : ".$argv[0]." {encrypt | decrypt} input_file output_file";
	exit;
}

$command = $argv[1];
$input_file = $argv[2];
$output_file = $argv[3];

if ($command == "encrypt") {
	$input = file_get_contents($input_file);
	file_put_contents($output_file, encode($input));
}
else if ($command == "decrypt") {
	$input = file_get_contents($input_file);
	file_put_contents($output_file, decode($input));
}
else {
	echo "Usage : ".$argv[0]." {encrypt | decrypt} input_file output_file";
	exit;
}