long start = System.nanoTime();
                        mockBytesEncrypted.addAndGet(1024); // Simulate 1KB message
                        long end = System.nanoTime();

                        totalTime.addAndGet(end - start);
                        operations.incrementAndGet();
                    }
                } catch (InterruptedException e) {

            // Track time in open state
            if (oldState == State.OPEN && openStateStartTime.get() > 0) {
                totalTimeInOpen.addAndGet(System.currentTimeMillis() - openStateStartTime.get());
                openStateStartTime.set(0);
            }

            if (newState == State.OPEN) {

            // Track encrypted bytes for key rotation - lock-free atomic operation
            bytesEncrypted.addAndGet(message.length);

            return result;
        } catch (final Exception e) {
            // Clear sensitive data on error
            if (e instanceof CIFSException) {
                throw (CIFSException) e;