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/*
Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301 USA.
*/
/* hc128.hpp defines HC128
*/
#ifndef TAO_CRYPT_HC128_HPP
#define TAO_CRYPT_HC128_HPP
#include "misc.hpp"
namespace TaoCrypt {
// HC128 encryption and decryption
class HC128 {
public:
typedef HC128 Encryption;
typedef HC128 Decryption;
HC128() {}
void Process(byte*, const byte*, word32);
void SetKey(const byte*, const byte*);
private:
word32 T_[1024]; /* P[i] = T[i]; Q[i] = T[1024 + i ]; */
word32 X_[16];
word32 Y_[16];
word32 counter1024_; /* counter1024 = i mod 1024 at the ith step */
word32 key_[8];
word32 iv_[8];
void SetIV(const byte*);
void GenerateKeystream(word32*);
void SetupUpdate();
HC128(const HC128&); // hide copy
const HC128 operator=(const HC128&); // and assign
};
} // namespace
#endif // TAO_CRYPT_HC128_HPP
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