Groovy Symmetric Key Encryption/Decryption

encDec.groovy

String encrypt_decrypt(String data, String symmKey, int encOrDec) {
        
        String ALGO = "AES";
        javax.crypto.spec.SecretKeySpec key =  new javax.crypto.spec.SecretKeySpec(symmKey.md5().toString().decodeHex(), ALGO);
        javax.crypto.Cipher c = javax.crypto.Cipher.getInstance(ALGO);
        String retVal = "";
        if (encOrDec == 1) {
            c.init(javax.crypto.Cipher.ENCRYPT_MODE, key);
            byte[] encVal = c.doFinal(data.getBytes("UTF-8"));
            retVal= new String(encVal.encodeHex().toString());
        }else if (encOrDec == 2) {
            c.init(javax.crypto.Cipher.DECRYPT_MODE, key);
            byte[] decVal = c.doFinal(data.decodeHex());
            retVal= new String(decVal,"UTF-8");
        }
        
        return retVal;
    }
    
//String enc = encrypt_decrypt("Hello","123",1);
//String dec = encrypt_decrypt(enc,"123",2);