class Aes {

private $hex_iv = '00000000000000000000000000000000'; # converted JAVA byte code in to HEX and placed it here

private $key = '397e2eb61307109f6e68006ebcb62f98'; #Same as in JAVA

function __construct($key) {

$this->key = $key;

$this->key = hash('sha256', $this->key, true);

}

/*

function encrypt($str) {

$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');

mcrypt_generic_init($td, $this->key, $this->hexToStr($this->hex_iv));

$block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);

$pad = $block - (strlen($str) % $block);

$str .= str_repeat(chr($pad), $pad);

$encrypted = mcrypt_generic($td, $str);

mcrypt_generic_deinit($td);

mcrypt_module_close($td);

return base64_encode($encrypted);

}

function decrypt($code) {

$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');

mcrypt_generic_init($td, $this->key, $this->hexToStr($this->hex_iv));

$str = mdecrypt_generic($td, base64_decode($code));

$block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);

mcrypt_generic_deinit($td);

mcrypt_module_close($td);

return $this->strippadding($str);

}*/

public function encrypt($input)

{

$data = openssl_encrypt($input, 'AES-256-CBC', $this->key, OPENSSL_RAW_DATA, $this->hexToStr($this->hex_iv));

$data = base64_encode($data);

return $data;

}

public function decrypt($input)

{

$decrypted = openssl_decrypt(base64_decode($input), 'AES-256-CBC', $this->key, OPENSSL_RAW_DATA, $this->hexToStr($this->hex_iv));

return $decrypted;

}

/*

For PKCS7 padding

*/

private function addpadding($string, $blocksize = 16) {

$len = strlen($string);

$pad = $blocksize - ($len % $blocksize);

$string .= str_repeat(chr($pad), $pad);

return $string;

}

private function strippadding($string) {

$slast = ord(substr($string, -1));

$slastc = chr($slast);

$pcheck = substr($string, -$slast);

if (preg_match("/$slastc{" . $slast . "}/", $string)) {

$string = substr($string, 0, strlen($string) - $slast);

return $string;

} else {

return false;

}

}

function hexToStr($hex)

{

$string='';

for ($i=0; $i

$string .= chr(hexdec($hex[$i].$hex[$i+1]));}

return $string;

}

}