SecureKeyManager.secureWipe(salt);
                    salt = null;
                }
            }
        }
    }

    @Override
    public boolean isDestroyed() {
        return destroyed;
    }

    @Override
    public void close() {
        try {
            destroy();
        } catch (DestroyFailedException e) {

            assertNotNull(encrypted, "Encrypted data should not be null");
            assertFalse(autoStorage.isDestroyed(), "Storage should not be destroyed during use");
        } finally {
            if (autoStorage != null) {
                autoStorage.close();
                assertTrue(autoStorage.isDestroyed(), "Storage should be destroyed after close");
            }
        }

        // Clean up