Class KeybufManager

libcppcryptfs/util/KeybufManager.h:36–85

using namespace std;

class KeybufManager
{
public:
	mutex m_mutex;
	KeyCache::id_t m_key_cache_id;
	bool m_bActive;
	bool m_bFinalized;
	int m_refcount;
	DWORD m_total_len;

	vector<KeyBuf> m_bufs;
	vector<BYTE> m_encryptedBuf;
	BYTE m_optional_entropy[32];

	KeybufManager();
	
	virtual ~KeybufManager();
private:
	void RegisterBuf(BYTE* p, DWORD len);
	bool EnterInternal();
	void LeaveInternal();
public:
	template <typename T>
	void RegisterBuf(LockZeroBuffer<T> *pBuf) 
	{
		RegisterBuf(reinterpret_cast<BYTE*>(pBuf->m_buf), pBuf->m_len * sizeof(T));
	};

	void Activate() { m_bActive = true; };
	bool Finalize(bool use_key_cache);

	bool Enter() 
	{
		if (!m_bActive)
			return true;

		return EnterInternal();
	}
	void Leave()
	{
		if (!m_bActive)
			return;

		LeaveInternal();
	}

	// disallow copying
	KeybufManager(KeybufManager const&) = delete;
	void operator=(KeybufManager const&) = delete;
};

class KeyDecryptor {
	KeybufManager* m_mgr;