bufferIndex += 2;

        // Read session ID
        header.sessionId = SMBUtil.readInt8(buffer, bufferIndex);

        return header;
    }

    /**
     * Get the associated data for AEAD encryption (everything except signature)
     *
     * @return byte array containing associated data
     */
    public byte[] getAssociatedData() {

        // toString() implementation may vary, just check it's not null and not empty
        assertFalse(stringRep.isEmpty());
    }

    @Test
    @DisplayName("Should generate correct associated data for AEAD")
    void testGetAssociatedData() {
        // Given
        transformHeader.setNonce(testNonce);
        transformHeader.setOriginalMessageSize(1024);
        transformHeader.setFlags(0x0001);