code: private void initializeEncryptionProvider() {
  		if (key != null) {
  			try {
  				encryptionProvider = EncryptionProviderFactory.getProvider(key);
  			} catch (UnsupportedKeySizeException e) {
  				throw new RuntimeCryptoException(e.getMessage(), e);
  			} catch (UnsupportedAlgorithmException e) {
  				throw new RuntimeCryptoException(e.getMessage(), e);
  			}
  		}
  	}
docs: Method which will create a new Encryption provider using the already
  specified key.