Sealtest.java

/*
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 0000000 7055362
 * @summary Sealtest
 * @author Jan Luehe
 */
import java.io.*;
import java.security.*;
import javax.crypto.*;

public class Sealtest {

    public static void main(String[] args) throws Exception {

        Security.addProvider(new com.sun.crypto.provider.SunJCE());

        // create DSA keypair
        KeyPairGenerator kpgen = KeyPairGenerator.getInstance("DSA");
        kpgen.initialize(512);
        KeyPair kp = kpgen.generateKeyPair();

        // create DES key
        KeyGenerator kg = KeyGenerator.getInstance("DES");
        SecretKey skey = kg.generateKey();

        // create cipher
        Cipher c = Cipher.getInstance("DES/CFB16/PKCS5Padding");
        c.init(Cipher.ENCRYPT_MODE, skey);

        // seal the DSA private key
        SealedObject sealed = new SealedObject(kp.getPrivate(), c);

        // serialize
        try (FileOutputStream fos = new FileOutputStream("sealed");
                ObjectOutputStream oos = new ObjectOutputStream(fos)) {
            oos.writeObject(sealed);
        }

        // deserialize
        try (FileInputStream fis = new FileInputStream("sealed");
                ObjectInputStream ois = new ObjectInputStream(fis)) {
            sealed = (SealedObject)ois.readObject();
        }

        System.out.println(sealed.getAlgorithm());

        // compare unsealed private key with original
        PrivateKey priv = (PrivateKey)sealed.getObject(skey);
        if (!priv.equals(kp.getPrivate()))
            throw new Exception("TEST FAILED");

        System.out.println("TEST SUCCEEDED");
    }
}