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+/* aes.hpp
+ *
+ * Copyright (C) 2003 Sawtooth Consulting Ltd.
+ *
+ * This file is part of yaSSL.
+ *
+ * yaSSL 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * yaSSL 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; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+/* aes.hpp defines AES
+*/
+
+
+#ifndef TAO_CRYPT_AES_HPP
+#define TAO_CRYPT_AES_HPP
+
+#include <string.h>
+#include "misc.hpp"
+#include "modes.hpp"
+#include "block.hpp"
+
+namespace TaoCrypt {
+
+enum { AES_BLOCK_SIZE = 16 };
+
+
+// AES encryption and decryption, see FIPS-197
+class AES : public Mode_BASE<AES_BLOCK_SIZE> {
+public:
+ enum { BLOCK_SIZE = AES_BLOCK_SIZE };
+
+ AES(CipherDir DIR, Mode MODE) : dir_(DIR), mode_(MODE) {}
+
+ void Process(byte*, const byte*, word32);
+ void SetKey(const byte* iv, word32 sz, CipherDir fake = ENCRYPTION);
+
+ void ProcessAndXorBlock(const byte*, const byte*, byte*) const;
+private:
+ CipherDir dir_;
+ Mode mode_;
+
+ static const word32 Te0[256];
+ static const word32 Te1[256];
+ static const word32 Te2[256];
+ static const word32 Te3[256];
+ static const word32 Te4[256];
+
+ static const word32 Td0[256];
+ static const word32 Td1[256];
+ static const word32 Td2[256];
+ static const word32 Td3[256];
+ static const word32 Td4[256];
+
+ static const word32 rcon_[];
+
+ word32 rounds_;
+ Word32Block key_;
+
+ void encrypt(const byte*, const byte*, byte*) const;
+ void decrypt(const byte*, const byte*, byte*) const;
+
+ AES(const AES&); // hide copy
+ AES& operator=(const AES&); // and assign
+};
+
+
+typedef BlockCipher<ENCRYPTION, AES, ECB> AES_ECB_Encryption;
+typedef BlockCipher<DECRYPTION, AES, ECB> AES_ECB_Decryption;
+
+typedef BlockCipher<ENCRYPTION, AES, CBC> AES_CBC_Encryption;
+typedef BlockCipher<DECRYPTION, AES, CBC> AES_CBC_Decryption;
+
+
+
+} // naemspace
+
+#endif // TAO_CRYPT_AES_HPP