DESSecretKeySpec.java

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/*
 * @test
 * @bug 6755701
 * @summary Change SecretKeyFactory.generateSecret to allow SecretKeySpec to
 * be passed and used for creating a DES and DESede keys. This avoids the error
 * of "InvalidKeySpecException: Inappropriate key specification"
 * @author Anthony Scarpino
 */

import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.SecretKeySpec;

public class DESSecretKeySpec {

    public static void main(String arg[]) throws Exception {
        Cipher c;
        byte[] key = new byte[]{'1','2','3','4','5','6','7','8',
            '1','2','3','4','5','6','7','8',
            '1','2','3','4','5','6','7','8'};


        System.out.println("Testing DES key");
        SecretKeySpec skey = new SecretKeySpec(key, "DES");
        c = Cipher.getInstance("DES/CBC/PKCS5Padding", "SunJCE");
        SecretKeyFactory.getInstance("DES", "SunJCE").generateSecret(skey);

        System.out.println("Testing DESede key");
        skey = new SecretKeySpec(key, "DESede");
        c = Cipher.getInstance("DESede/CBC/PKCS5Padding", "SunJCE");
        SecretKeyFactory.getInstance("TripleDES", "SunJCE").generateSecret(skey);
    }
}