Botan
1.11.15
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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