*/
    boolean isValid ( CIFSContext cifsContext, SmbNegotiationRequest request );


    /**
     * 
     * @return selected dialect
     */
    DialectVersion getSelectedDialect ();


    /**
     * 
     * @return whether the server has singing enabled
     */
    boolean isSigningEnabled ();


    /**
     * 
     * @return whether the server requires signing

        this.useUnicode = ctx.getConfig().isUseUnicode();
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.SmbNegotiationResponse#getSelectedDialect()
     */
    @Override
    public DialectVersion getSelectedDialect () {
        return DialectVersion.SMB1;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.SmbNegotiationResponse#getTransactionBufferSize()

        Smb2NegotiateResponse resp = (Smb2NegotiateResponse) this.negotiated;
        int cipherId = -1;

        if ( resp.getSelectedDialect().atLeast(DialectVersion.SMB311) ) {
            cipherId = resp.getSelectedCipher();
        }
        else if ( resp.getSelectedDialect().atLeast(DialectVersion.SMB300) ) {
            cipherId = EncryptionNegotiateContext.CIPHER_AES128_CCM;
        }
        else {

        boolean anonymous = this.credentials.isAnonymous();
        long sessId = 0;

        boolean preauthIntegrity = negoResp.getSelectedDialect().atLeast(DialectVersion.SMB311);
        this.preauthIntegrityHash = preauthIntegrity ? trans.getPreauthIntegrityHash() : null;

        if ( this.preauthIntegrityHash != null && log.isDebugEnabled() ) {

     */
    public byte[] getServerGuid () {
        return this.serverGuid;
    }


    /**
     * @return the selectedDialect
     */
    @Override
    public DialectVersion getSelectedDialect () {
        return this.selectedDialect;
    }


    /**
     * @return the selectedCipher
     */
    public int getSelectedCipher () {
        return this.selectedCipher;
    }

            log.debug("Secure negotiation does not apply");
            return;
        }

        Smb2NegotiateResponse nego = (Smb2NegotiateResponse) trans.getNegotiateResponse();
        if ( nego.getSelectedDialect().atLeast(DialectVersion.SMB311) ) {
            // have preauth integrity instead
            log.debug("Secure negotiation does not apply, is SMB3.1");
            return;
        }