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/*
* CTS Mode
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_CTS_H__
#define BOTAN_CTS_H__
#include <botan/modebase.h>
#include <botan/block_cipher.h>
namespace Botan {
/*
* CTS Encryption
*/
class BOTAN_DLL CTS_Encryption : public BlockCipherMode
{
public:
CTS_Encryption(BlockCipher* ciph) :
BlockCipherMode(ciph, "CTS", ciph->BLOCK_SIZE, 0, 2) {}
CTS_Encryption(BlockCipher* ciph,
const SymmetricKey& key,
const InitializationVector& iv) :
BlockCipherMode(ciph, "CTS", ciph->BLOCK_SIZE, 0, 2)
{ set_key(key); set_iv(iv); }
private:
void write(const byte[], u32bit);
void end_msg();
void encrypt(const byte[]);
};
/*
* CTS Decryption
*/
class BOTAN_DLL CTS_Decryption : public BlockCipherMode
{
public:
CTS_Decryption(BlockCipher* ciph) :
BlockCipherMode(ciph, "CTS", ciph->BLOCK_SIZE, 0, 2)
{ temp.create(BLOCK_SIZE); }
CTS_Decryption(BlockCipher* ciph,
const SymmetricKey& key,
const InitializationVector& iv) :
BlockCipherMode(ciph, "CTS", ciph->BLOCK_SIZE, 0, 2)
{ set_key(key); set_iv(iv); temp.create(BLOCK_SIZE); }
private:
void write(const byte[], u32bit);
void end_msg();
void decrypt(const byte[]);
SecureVector<byte> temp;
};
}
#endif
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