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/*************************************************
* CFB Mode Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#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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