SMBSigningDigest dg = mock(SMBSigningDigest.class);
        setField(session, "digest", dg);
        assertFalse(session.isSignatureSetupRequired());

        // Case 2: no digest, signing enforced by transport -> true
        setField(session, "digest", null);
        when(transport.isSigningEnforced()).thenReturn(true);
        assertTrue(session.isSignatureSetupRequired());

                trans.ensureConnected();
                log.warn("""
                        Default credentials (jcifs.smb.client.username/password)\
                         not specified. SMB signing may not work propertly.\
                          Skipping DC interrogation.""");
            } else {

        setField(transport, "negotiated", new Smb2NegotiateResponse(cfg));
        assertNull(transport.getServerEncryptionKey());
    }

    @Test
    @DisplayName("Signing enforced/optional adhere to flags and negotiation")
    void signingModes() throws Exception {
        // Enforced via constructor flag -> optional false, enforced true regardless of negotiation

            this.writeSizeFile = Math.min(th.getConfig().getSendBufferSize() - 70, 0xFFFF - 70);
        } else {
            log.debug("No support or SMB signing is enabled, not enabling large writes");
            this.writeSizeFile = this.writeSize;
        }

        if (log.isDebugEnabled()) {
            log.debug("Negotiated file write size is " + this.writeSizeFile);

	// providing the ability to have sub-second resolution for timestamps.
	//
	// Some newer formats add their own extensions to PAX by defining their
	// own keys and assigning certain semantic meaning to the associated values.
	// For example, sparse file support in PAX is implemented using keys
	// defined by the GNU manual (e.g., "GNU.sparse.map").
	//
	// Reference:

            jcifs.CIFSContext context = createDefaultContext();

            // Create transport with multi-channel specific settings
            // Multi-channel transports should use signing consistently with the main session
            boolean forceSigning = context.getConfig().isSigningEnforced();

)

cc_library(
    name = "dlpack",
    srcs = ["dlpack.cc"],
    hdrs = ["dlpack.h"],
    copts = tf_copts() + [
        "-fexceptions",
        "-fno-strict-aliasing",
    ],
    features = ["-use_header_modules"],
    visibility = ["//tensorflow:__subpackages__"],
    deps = [
        ":c_api",
        ":c_api_experimental",
        ":tfe_tensorhandle_internal",

    private int signSeq;
    private boolean verifyFailed;
    /**
     * Path associated with this SMB message.
     */
    protected String path;
    /**
     * Message signing digest for SMB1 security.
     */
    protected SMB1SigningDigest digest = null;
    private ServerMessageBlock response;

    private final Configuration config;

    private Long expiration;

        if (!isReceived() || getStatus() != 0) {
            return false;
        }

        if (req.isSigningEnforced() && !isSigningEnabled()) {
            log.debug("Signing is enforced but server does not allow it");
            return false;
        }

        if (getDialectRevision() == Smb2Constants.SMB2_DIALECT_ANY) {
            log.debug("Server returned ANY dialect");

    }
    
    public void validateRemoteAccess(long remoteAddress, int length, int remoteKey) {
        // Validate that remote memory access is authorized
        // This would integrate with SMB3 encryption/signing
        if (!isAuthorizedAccess(remoteAddress, length, remoteKey)) {
            throw new SecurityException("Unauthorized RDMA remote access");
        }
    }