*/
    boolean verifySignature ( byte[] buffer, int i, int size );


    /**
     * @return whether signature verification failed
     */
    boolean isVerifyFailed ();


    /**
     * 
     * @return whether the response is an error
     */
    boolean isError ();


    /**
     * Set error status
     */
    void error ();


    /**

    public final int getErrorCode () {
        return getStatus();
    }


    /**
     * 
     * @return whether signature verification failed
     */
    @Override
    public final boolean isVerifyFailed () {
        return this.verifyFailed;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.util.transport.Response#getGrantedCredits()
     */
    @Override