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/*
* WiderWake
* (C) 1999-2008 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_WIDER_WAKE_H__
#define BOTAN_WIDER_WAKE_H__
#include <botan/stream_cipher.h>
namespace Botan {
/*
* WiderWake4+1-BE
*/
class BOTAN_DLL WiderWake_41_BE : public StreamCipher
{
public:
void cipher(const byte[], byte[], u32bit);
void set_iv(const byte[], u32bit);
bool valid_iv_length(u32bit iv_len) const
{ return (iv_len == 8); }
void clear() throw();
std::string name() const { return "WiderWake4+1-BE"; }
StreamCipher* clone() const { return new WiderWake_41_BE; }
WiderWake_41_BE() : StreamCipher(16, 16, 1) {}
private:
void key_schedule(const byte[], u32bit);
void generate(u32bit);
SecureBuffer<byte, DEFAULT_BUFFERSIZE> buffer;
SecureBuffer<u32bit, 256> T;
SecureBuffer<u32bit, 5> state;
SecureBuffer<u32bit, 4> t_key;
u32bit position;
};
}
#endif
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