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<?php
/**
* Class Name: KZ_Crypt
* Author: Killer
**/
class KZ_Crypt {
public $_text = '';
//Chìa khoá để mở kho báu ^^
public $_key = 'f_pk_ZingTV_1_@z';
public $_iv = 'f_iv_ZingTV_1_@z';
//Kết quả trả về
public $_result = '';
/**
* Hàm mã hoá
**/
public function _encrypt(){
if($this->_text != ''){
$cipher = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
$iv_size = mcrypt_enc_get_iv_size($cipher);
if (mcrypt_generic_init($cipher, $this->_key, $this->_iv) != -1){
$cipherText = mcrypt_generic($cipher,$this->_text);
mcrypt_generic_deinit($cipher);
$this->_result = bin2hex($cipherText);
return true;
}
}else{
return false;
}
}
/**
* Hàm giải mã
**/
public function _decrypt(){
if($this->_text != ''){
$cipher = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
$iv_size = mcrypt_enc_get_iv_size($cipher);
if(mcrypt_generic_init($cipher, $this->_key, $this->_iv) != -1){
$cipherText = mdecrypt_generic($cipher,$this->_hexToString($this->_text));
mcrypt_generic_deinit($cipher);
$this->_result = $cipherText;
return true;
}else{
return false;
}
}
}
/**
* Hàm chuyển đổi từ mã hex sang chuỗi.
**/
protected function _hexToString($hex){
if(!is_string($hex)){
return null;
}
$char = '';
for($i=0; $i<strlen($hex);$i+=2){
$char .= chr(hexdec($hex{$i}.$hex{($i+1)}));
}
return $char;
}
}
//cach dung
//encode
/*$kz_crypt = new KZ_Crypt;
$kz_crypt->_text = 'ABC';
if($kz_crypt->_encrypt() != false){
echo $kz_crypt->_result;
}*/
//decode
/*$kz_crypt = new KZ_Crypt;
$kz_crypt->_text = '3846258a1761dcc417a1b749a438bdbbec04bd989a10ad94b9da7127d38571ba2f2afcbbed7e719963b69f42e24a3721c4fe15260a48ffa69c8f87b5c52148e71469fc0d538854324121f4b565085c57eae19cfe9fa48388f1c06cf82c573e818902be0e3d2e83111b16965ab9aa91150760a05cda89bb7e1ad3341b30185a6cde311dfc8de9e27d103397d3e927582930692185d7c9aea74d017da18ea12b16';
if($kz_crypt->_decrypt() != false){
echo $kz_crypt->_result;
}*/
?>