Dear.
   hi, I use a DES key to Wrap another DES key like this:

            Mechanism mech = new Mechanism(Mechanism.CKM_DES_ECB, null);
            try
            {
                byte[] wrapped_key = session.WrapKey(mech, des_k2, des_k1);
            }
            catch (CryptokiException e)
            {
                string error = e.ErrorString;
                int errorcode = e.ErrorCode;
                Console.WriteLine("ErrorCode: 0x{0:X8} "+error,errorcode);
            }

   but I get MECHANISM_INVALID error, what's the problem?

Yes,sure.Because I can use CKM_DES_ECB to Encrypt data.Is there any example to use Wrap key and Unwrap Key?

Thanks !

Above all,how do i know my token support the wrap/unwrap funciton or any other function?

Thanks!

This should be in your token documentation.