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<?php

error_reporting(E_ALL ^ E_DEPRECATED);

class PHP_AES_Cipher {
    static function encrypt($str, $key) {
        $block = mcrypt_get_block_size('rijndael_128', 'ecb');
        $pad = $block - (strlen($str) % $block);
        $str .= str_repeat(chr($pad), $pad);
        return mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $str, MCRYPT_MODE_ECB);
    }

    static function decrypt($str, $key){
        $str = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $str, MCRYPT_MODE_ECB);
        return $str;
    }

    static function hex2bin($hexstr) {
        $n = strlen($hexstr);
        $sbin = "";
        $i = 0;
        while ($i < $n) {
            $a = substr($hexstr, $i, 2);
            $c = pack("H*", $a);
            if ($i == 0) {
                $sbin = $c;
            } else {
                $sbin.=$c;
            }
            $i+=2;
        }
        return $sbin;
    }
}

//Code to Test
$key = 'BDE540BD7E96ECAB33D0216EF003F53C';
$data = "9996575408";
$javaEqualizer = "0B4547B67E1585D6741535763E71B276"; # hasil dari jar JAVA

echo "Key: $key <br><br>";
echo "Data: $data <br><br>";

$encrypted = strtoupper(bin2hex(PHP_AES_Cipher::encrypt($data, hex2bin($key))));

echo "Encrypted Payload: $encrypted <br><br>";

echo "Is Encryption equal with java result: " . ($encrypted == $javaEqualizer ? '<b>YES</b>' : '<b>NO</b>') . "<br/><br/>";

$decryptedPayload = PHP_AES_Cipher::decrypt(hex2bin($encrypted), hex2bin($key));

echo "Decrypted Payload: $decryptedPayload <br><br>";

?>