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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
+