}
            assertFalse(allZero, "Signature should not be all zeros after signing");
        }

        @Test
        @DisplayName("Should set SMB2_FLAGS_SIGNED flag")
        void testSignSetsSignedFlag() {
            // Set initial flags without signed flag
            int initialFlags = 0x00000001;
            SMBUtil.writeInt4(initialFlags, data, 16);