Main Page | Namespace List | Class Hierarchy | Alphabetical List | Class List | File List | Namespace Members | Class Members | File Members

tea.h

Go to the documentation of this file.
00001 #ifndef CRYPTOPP_TEA_H 00002 #define CRYPTOPP_TEA_H 00003 00004 /** \file 00005 */ 00006 00007 #include "seckey.h" 00008 #include "secblock.h" 00009 00010 NAMESPACE_BEGIN(CryptoPP) 00011 00012 struct TEA_Info : public FixedBlockSize<8>, public FixedKeyLength<16>, public FixedRounds<32> 00013 { 00014 enum {LOG_ROUNDS=5}; 00015 static const char *StaticAlgorithmName() {return "TEA";} 00016 }; 00017 00018 /// <a href="http://www.weidai.com/scan-mirror/cs.html#TEA">TEA</a> 00019 class TEA : public TEA_Info, public BlockCipherDocumentation 00020 { 00021 class Base : public BlockCipherBaseTemplate<TEA_Info> 00022 { 00023 public: 00024 void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length); 00025 00026 protected: 00027 static const word32 DELTA; 00028 FixedSizeSecBlock<word32, 4> k; 00029 }; 00030 00031 class Enc : public Base 00032 { 00033 public: 00034 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; 00035 }; 00036 00037 class Dec : public Base 00038 { 00039 public: 00040 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; 00041 }; 00042 00043 public: 00044 typedef BlockCipherTemplate<ENCRYPTION, Enc> Encryption; 00045 typedef BlockCipherTemplate<DECRYPTION, Dec> Decryption; 00046 }; 00047 00048 typedef TEA::Encryption TEAEncryption; 00049 typedef TEA::Decryption TEADecryption; 00050 00051 NAMESPACE_END 00052 00053 #endif

Generated on Fri Aug 13 09:56:55 2004 for Crypto++ by doxygen 1.3.7