}
    }

    @Test
    public void testSecureWipeNull() {
        // Should not throw
        SecureKeyManager.secureWipe(null);
    }

    @Test
    public void testKeyRotation() throws GeneralSecurityException {
        String sessionId = "rotation-test";
        keyManager.storeSessionKey(sessionId, testKey, "AES");

        // Initial version should be 0

        assertDoesNotThrow(() -> context.close());

        // Cleanup
        keyManager.close();
    }

    @Test
    @DisplayName("Should rotate keys successfully")
    void testKeyRotation() throws Exception {
        // Given
        Smb2EncryptionContext context = new Smb2EncryptionContext(EncryptionNegotiateContext.CIPHER_AES128_GCM, DialectVersion.SMB311,