this.preauthIntegrityHash = trans.calculatePreauthHash(reqBytes, 0, reqBytes.length, this.preauthIntegrityHash);

                    if (response.getStatus() == NtStatus.NT_STATUS_MORE_PROCESSING_REQUIRED) {
                        byte[] respBytes = response.getRawPayload();
                        this.preauthIntegrityHash = trans.calculatePreauthHash(respBytes, 0, respBytes.length, this.preauthIntegrityHash);

        }
    }

    private void updatePreauthHash(final byte[] input) throws CIFSException {
        synchronized (this.preauthHashLock) {
            try {
                this.preauthIntegrityHash = calculatePreauthHash(input, 0, input.length, this.preauthIntegrityHash);
            } catch (Exception e) {
                log.error("Failed to update pre-auth integrity hash", e);