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/*
* Skipjack
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_SKIPJACK_H__
#define BOTAN_SKIPJACK_H__
#include <botan/block_cipher.h>
namespace Botan {
/**
* Skipjack, a NSA designed cipher used in Fortezza
*/
class BOTAN_DLL Skipjack : public BlockCipher
{
public:
void encrypt_n(const byte in[], byte out[], size_t blocks) const;
void decrypt_n(const byte in[], byte out[], size_t blocks) const;
void clear();
std::string name() const { return "Skipjack"; }
BlockCipher* clone() const { return new Skipjack; }
Skipjack() : BlockCipher(8, 10), FTAB(2560) {}
private:
void key_schedule(const byte[], size_t);
SecureVector<byte> FTAB;
};
}
#endif
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