byte[] getEncodedKey(org.mozilla.jss.crypto.PrivateKey pkey) throws Exception {
CryptoManager cm = CryptoManager.getInstance();
CryptoToken token = cm.getInternalKeyStorageToken();
KeyGenerator kg = token.getKeyGenerator(KeyGenAlgorithm.DES3);
SymmetricKey sk = kg.generate();
KeyWrapper wrapper = token.getKeyWrapper(KeyWrapAlgorithm.DES3_CBC_PAD);
byte iv[] = {0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1};
IVParameterSpec param = new IVParameterSpec(iv);
wrapper.initWrap(sk, param);
byte[] enckey = wrapper.wrap(pkey);
Cipher c = token.getCipherContext(EncryptionAlgorithm.DES3_CBC_PAD);
c.initDecrypt(sk, param);
return c.doFinal(enckey);
}