this.preauthSalt = salt;

            if (config.isEncryptionEnabled()) {
                // Build cipher list based on AES-256 support
                List<Integer> ciphers = new ArrayList<>();

                // Prefer GCM over CCM for better performance
                if (config.isAES256Enabled()) {

    }

    @Test
    @DisplayName("Should support AES-256 cipher constants")
    void testAES256CipherConstants() {
        // Verify AES-256 constants are defined
        assertEquals(0x0003, Smb2EncryptionContext.CIPHER_AES_256_CCM, "AES-256-CCM constant should be defined");
        assertEquals(0x0004, Smb2EncryptionContext.CIPHER_AES_256_GCM, "AES-256-GCM constant should be defined");

        }

        @Test
        @DisplayName("createEncryptionContext selects AES-CCM for SMB 3.0 and AES-GCM for SMB 3.1.1")
        void createEncryptionContext_happyDialects() throws Exception {
            byte[] sessionKey = new byte[16];
            byte[] preauth = new byte[16];

            // SMB 3.0 -> AES-128-CCM
            setField(transport, "smb2", true);

- [PRF](#prf): HMAC-SHA-256
- [AEAD](#aead): AES-256-GCM if the CPU supports AES-NI, ChaCha20-Poly1305 otherwise. More specifically AES-256-GCM is only selected for X86-64 CPUs with AES-NI extension.

            String archiveId = sessionId + ".v" + currentVersion;
            storeSessionKeyInternal(archiveId, currentKey, "AES");

            // Store new key
            storeSessionKeyInternal(sessionId, newKey, "AES");
            keyVersions.put(sessionId, newVersion);
            keyCreationTimes.put(sessionId, System.currentTimeMillis());

                case FessConfig.search_engine_heartbeat_interval:
                    return "10000";
                case FessConfig.APP_CIPHER_ALGORISM:
                    return "aes";
                case FessConfig.APP_CIPHER_KEY:
                    return "___change__me___";
                case FessConfig.APP_ENCRYPT_PROPERTY_PATTERN:
                    return ".*password|.*key|.*token|.*secret";

    private OneWayCryptographer oneWayCryptographer;

    @Override
    public void setUp() throws Exception {
        super.setUp();

        // Create InvertibleCryptographer with AES
        invertibleCryptographer = InvertibleCryptographer.createAesCipher("1234567890123456");

        // Create OneWayCryptographer with SHA256
        oneWayCryptographer = OneWayCryptographer.createSha256Cryptographer();

x[:], x[:]) return x } for len(m) >= aes.BlockSize { subtle.XORBytes(x[:], m[:aes.BlockSize], x[:]) if len(m) == aes.BlockSize { // Final complete block. subtle.XORBytes(x[:], c.k1[:], x[:]) } aes.EncryptBlockInternal(&c.b, x[:], x[:]) m = m[aes.BlockSize:] } if len(m) > 0 { // Final incomplete block. subtle.XORBytes(x[:], m, x[:]) subtle.XORBytes(x[:], c.k2[:], x[:]) x[len(m)] ^= 0b10000000 aes.EncryptBlockInternal(&c.b, x[:], x[:]) } return x } // shiftLeft sets x to x << 1, and returns MSB₁(x)....

    private static final int SIGNATURE_OFFSET = 48;
    private static final int SIGNATURE_LENGTH = 16;

    @BeforeAll
    static void setupClass() {
        // Ensure BouncyCastle provider is available for AES-CMAC
        if (Security.getProvider(BouncyCastleProvider.PROVIDER_NAME) == null) {
            Security.addProvider(new BouncyCastleProvider());
        }
    }

    @BeforeEach
    void setup() {

    }

    @Test
    @DisplayName("Test log encryption")
    void testLogEncryption() {
        logger.logEncryption(true, "AES-128-GCM", "SMB3.1.1");

        Map<EventType, Long> stats = logger.getStatistics();
        assertEquals(Long.valueOf(1), stats.get(EventType.ENCRYPTION_ENABLED), "Should have 1 encryption event");
    }

    @Test