Problems turning bytes back into a des key

Question

hi there-
i'm writing a client/server application the uses encryption to send files back and forth. i have been able to get my program to receive certificates from the client and server. i have generated a des key using:
KeyGenerator kg = KeyGenerator.getInstance("DES");
java.security.Key secretkey = kg.generateKey();
and I want to send that to the server, encrypted with the public key. i'm trying to do it like this:
Cipher cipher = Cipher.getInstance("RSA");
cipher.init ( Cipher.ENCRYPT_MODE, key); //key is the public key
theBytes [] = secretkey.getEncoded(); //send secretkey
bytesEncrypted [] = cipher.doFinal(theBytes);
outToServer.writeInt(bytesEncrypted.length);
outToServer.write(bytesEncrypted);
the problem is, once i transmit the des key and decrypt it with the private key, i dont know how to turn it back into a des key from the bytes. can someone help me out bigtime and let me know how i can go about doing this?
thanks a bunch!

Answer 1

In followup to my previous reply, here is the sample code.
import java.security.spec.KeySpec;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
public class SecretKeyTest {
     public static void main(String[] args) throws Exception {
          System.out.println(System.getProperty("java.version"));
          KeyGenerator kg = KeyGenerator.getInstance("DES", "SunJCE");
          SecretKey sk1 = kg.generateKey();
          System.out.println(sk1);
          byte [] sk1Bytes = sk1.getEncoded();
          SecretKeyFactory skf = SecretKeyFactory.getInstance("DES");
          KeySpec spec = new DESKeySpec(sk1Bytes);
          SecretKey sk2 = skf.generateSecret(spec);
          System.out.println(sk1.equals(sk2) ? "Equal" : "Not Equal");
}