// Test disabling rotation
        keyManager.configureKeyRotation(0);

        // Test reconfiguring
        keyManager.configureKeyRotation(30000);
    }

    @Test
    public void testConcurrentKeyOperations() throws InterruptedException {
        int threadCount = 10;
        int operationsPerThread = 50;
        CountDownLatch latch = new CountDownLatch(threadCount);