log.error("Failed to update pre-auth integrity hash", e);
                // Reset hash on error to maintain integrity
                resetPreauthHash();
                throw new CIFSException("Pre-authentication integrity hash update failed", e);
            }
        }
    }

    /**
     * Reset the pre-authentication integrity hash to initial state.

                    if (signingKey != null && response != null) {
                        if (this.preauthIntegrityHash != null && log.isDebugEnabled()) {
                            log.debug("Final preauth integrity hash " + Hexdump.toHexString(this.preauthIntegrityHash));
                        }
                        Smb2SigningDigest dgst =