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/*
* CFB Mode
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_CFB_H__
#define BOTAN_CFB_H__
#include <botan/modebase.h>
namespace Botan {
/*
* CFB Encryption
*/
class BOTAN_DLL CFB_Encryption : public BlockCipherMode
{
public:
CFB_Encryption(BlockCipher*, u32bit = 0);
CFB_Encryption(BlockCipher*, const SymmetricKey&,
const InitializationVector&, u32bit = 0);
private:
void write(const byte[], u32bit);
void feedback();
const u32bit FEEDBACK_SIZE;
};
/*
* CFB Decryption
*/
class BOTAN_DLL CFB_Decryption : public BlockCipherMode
{
public:
CFB_Decryption(BlockCipher*, u32bit = 0);
CFB_Decryption(BlockCipher*, const SymmetricKey&,
const InitializationVector&, u32bit = 0);
private:
void write(const byte[], u32bit);
void feedback();
const u32bit FEEDBACK_SIZE;
};
}
#endif
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