Botan  1.11.15
src/lib/block/xtea/xtea.h
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00001 /*
00002 * XTEA
00003 * (C) 1999-2007 Jack Lloyd
00004 *
00005 * Botan is released under the Simplified BSD License (see license.txt)
00006 */
00007 
00008 #ifndef BOTAN_XTEA_H__
00009 #define BOTAN_XTEA_H__
00010 
00011 #include <botan/block_cipher.h>
00012 
00013 namespace Botan {
00014 
00015 /**
00016 * XTEA
00017 */
00018 class BOTAN_DLL XTEA : public Block_Cipher_Fixed_Params<8, 16>
00019    {
00020    public:
00021       void encrypt_n(const byte in[], byte out[], size_t blocks) const;
00022       void decrypt_n(const byte in[], byte out[], size_t blocks) const;
00023 
00024       void clear();
00025       std::string name() const { return "XTEA"; }
00026       BlockCipher* clone() const { return new XTEA; }
00027    protected:
00028       /**
00029       * @return const reference to the key schedule
00030       */
00031       const secure_vector<u32bit>& get_EK() const { return EK; }
00032 
00033    private:
00034       void key_schedule(const byte[], size_t);
00035       secure_vector<u32bit> EK;
00036    };
00037 
00038 }
00039 
00040 #endif