// Create signature pattern
            byte[] testSignature = new byte[16];
            for (int i = 0; i < 16; i++) {
                testSignature[i] = (byte) (i + 1);
            }

            // Write signature to buffer (at offset 48 for sync messages)
            System.arraycopy(testSignature, 0, buffer, 48, 16);

            testMessage.setBytesRead(10);

    // The protocol ID is part of the encrypted SMB2 message, not the transform header

    @Test
    @DisplayName("Should set and get signature")
    void testSignature() {
        // Given
        byte[] signature = new byte[16];
        new SecureRandom().nextBytes(signature);

        // When
        transformHeader.setSignature(signature);

        // Then