DecryptWithoutParameters.java

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/**
 * @test
 * @bug 4953553
 * @summary Ensure that InvalidKeyException is thrown when decrypting
 * without parameters as javadoc has stated.
 * @author Valerie Peng
 */

import java.io.*;
import java.util.*;
import java.security.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import javax.crypto.interfaces.PBEKey;

public class DecryptWithoutParameters {

    public static void main(String argv[]) throws Exception {
        String algo = "PBEWithMD5AndDES";
        Cipher cipher = Cipher.getInstance(algo, "SunJCE");
        SecretKey key = new SecretKeySpec(new byte[5], algo);
        try {
            cipher.init(Cipher.DECRYPT_MODE, key);
            throw new Exception("Should throw InvalidKeyException when " +
                                "decrypting without parameters");
        } catch (InvalidKeyException ike) {
            System.out.println("Test Passed: InvalidKeyException thrown");
        }
    }
}