Class AES

libcppcryptfs/crypt/aes.h:41–72

// this class is used by aes-siv and eme

class AES
{
public:
	// expanded aes keys are stored elsewhere (preferably in a LockZeroBuffer)
	static void initialize_keys(const unsigned char *key, int keylen /* in bits */, 
		AES_KEY *encrypt_key, AES_KEY *decrypt_key);

	void set_keys(const AES_KEY *key_encrypt, const AES_KEY *key_decrypt);

	// encrypt single AES block (16 bytes)
	void encrypt(const unsigned char* plain, unsigned char *cipher) const;

	// decrypt single AES block (16 bytes)
	void decrypt(const unsigned char *cipher, unsigned char *plain) const;
  

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

	virtual ~AES();

	const AES_KEY *m_key_encrypt;
	const AES_KEY *m_key_decrypt;

 public:
	 static bool use_aes_ni();

private:	
	 bool m_use_aes_ni;
};