No Such Algorithm Exception

[jason zepris]

Hi All,

I am using Java 1.6 and am getting the following exception:

Exception in thread "main" java.security.NoSuchAlgorithmException: no such algorithm: AES/CBC/PKCS5Padding for provider SunJCE

  /**
     * configure with encryption algorithm to use. Avoid insecure DES. Changes to algorithm may require additional ivParms.
     */
    private static final String ALGORITHM = "AES";

    /**
     * configure with block mode to use. Avoid insecure ECB.
     */
    private static final String BLOCK_MODE = "CBC";

    /**
     * configure with padding method to use
     */
    private static final String PADDING = "PKCS5Padding";

    /**
     * the encoding to use when converting bytes <--> String
     */
    private static final Charset CHARSET = Charset.forName( "UTF-8" );



	public static void main(String args[]) throws NoSuchAlgorithmException, NoSuchProviderException
	{
	
		KeyGenerator keyGenerator = KeyGenerator.getInstance(ALGORITHM + "/" + BLOCK_MODE + "/" + PADDING, "SunJCE");
	}

Any one know what's wrong? I've read that this algorithm should be available for this provider.

[Tim McGuire]

I think you are mixing up KeyGenerator.getInstance and Cipher.getInstance

KeyGenerator.getInstance only takes an String for algorithm so getInstance("AES","JCE") is what you want

Cipher takes a string for transformation which is what you are trying to give.

See http://docs.oracle.com/javase/1.5.0/docs/guide/security/jce/JCERefGuide.html

[jason zepris]

Yeah I did confuse it. Thank you very much.