// Verify transform header is present (first 52 bytes)
        assertTrue(encrypted.length >= 52, "Encrypted message should include transform header");

        // When - Decrypt
        byte[] decrypted = context.decryptMessage(encrypted);

        // Then - Verify decryption
        assertArrayEquals(plaintext, decrypted, "Decrypted message should match original plaintext");
    }

    @Test

        byte[] decOut = session.decryptMessage(new byte[] { 5 });
        assertArrayEquals(new byte[] { 7, 7 }, decOut);
        verify(enc, times(1)).decryptMessage(eq(new byte[] { 5 }));
    }

    @Test
    @DisplayName("getTransport returns acquired transport instance")
    void testGetTransportAcquire() {
        SmbSessionImpl session = newSession();

     */
    public byte[] decryptMessage(byte[] encryptedMessage) throws CIFSException {
        if (this.encryptionContext == null) {
            throw new CIFSException("Encryption not enabled for this session");
        }
        return this.encryptionContext.decryptMessage(encryptedMessage);
    }

     *            encrypted message with transform header
     * @return decrypted plaintext message
     * @throws CIFSException
     *             if decryption fails
     */
    public byte[] decryptMessage(final byte[] encryptedMessage) throws CIFSException {
        try {
            // Parse transform header
            final Smb2TransformHeader transformHeader = Smb2TransformHeader.decode(encryptedMessage, 0);