*/
    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

            }
            log.trace("VALIDATE_NEGOTIATE_INFO returned error", e);
            if ( ( req.getResponse().isReceived() && req.getResponse().isVerifyFailed() ) || e.getNtStatus() == NtStatus.NT_STATUS_ACCESS_DENIED ) {
                // this is the signature error
                throw new SMBProtocolDowngradeException("Signature error during negotiate validation", e);

            }
            throw new SmbException(resp.getErrorCode(), null);
        }
        if ( resp.isVerifyFailed() ) {
            throw new SmbException("Signature verification failed.");
        }
        return cont;
    }


    /**
     * @param request
     * @param response

     */
    public final void setSignSeq ( int signSeq ) {
        this.signSeq = signSeq;
    }


    /**
     * @return the verifyFailed
     */
    @Override
    public boolean isVerifyFailed () {
        return this.verifyFailed;
    }


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