lastb = 0;
    public void initSign(        int             signatureType,        PGPPrivateKey   key)        throws PGPException    {        this.privKey = key;        this.signatureType = signatureType;                try        {            sig.initSign(key.getKey());        }        catch (InvalidKeyException e)        {           throw new PGPException("invalid key.", e);        }                dig.reset();    }