// May fail with ProviderException with root cause like
    // sun.security.pkcs11.wrapper.PKCS11Exception: CKR_SLOT_ID_INVALID
    val pkcs11 = Security.getProvider("SunPKCS11").configure(config)
    Security.addProvider(pkcs11)

    val callbackHandler = ConsoleCallbackHandler

    val builderList: List<KeyStore.Builder> =
      listOf(

     *
     * @param config the configuration to read provider preference from
     * @return RDMA provider instance, or null if none available
     */
    public static RdmaProvider getProvider(Configuration config) {
        String preference = config.getRdmaProvider();
        return createProvider(preference != null ? preference : "auto");
    }

    /**
     * Select the best available RDMA provider

        try {
            rdmaConnection.close();
        } finally {
            bufferManager.cleanup();
            super.disconnect();
        }
    }
    
    public RdmaProvider getProvider() {
        return provider;
    }
    
    public RdmaConnection getConnection() {
        return rdmaConnection;
    }
}
```

### 4.4 RDMA Buffer Manager
```java

        }
        List<String> subs = new ArrayList<>();
        subs.add("type=" + terminal.getType());
        if (terminal instanceof TerminalExt te) {
            subs.add("provider=" + te.getProvider().name());
        }
        if (terminal instanceof AbstractPosixTerminal pt) {
            subs.add("pty=" + pt.getPty().getClass().getName());
        }

    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() {
        sessionKey = new byte[16];