decrypt data bridging vclaim v2

<?php 
        require_once 'vendor/autoload.php';
    
        /* function decrypt dan kompresi dijadikan satu */       
        function stringDecrypt($key, $string)
	{

		$encrypt_method = 'AES-256-CBC';
		// hash
		$key_hash = hex2bin(hash('sha256', $key));
		// iv - encrypt method AES-256-CBC expects 16 bytes - else you will get a warning        
		$iv = substr(hex2bin(hash('sha256', $key)), 0, 16);
		$output = openssl_decrypt(base64_decode($string), $encrypt_method, $key_hash, OPENSSL_RAW_DATA, $iv);
		return \LZCompressor\LZString::decompressFromEncodedURIComponent($output);
	}
?>