// rijndael.h - written and placed in the public domain by Wei Dai //! \file rijndael.h //! \brief Classes for Rijndael encryption algorithm //! \details All key sizes are supported. The library only provides Rijndael with 128-bit blocks, //! and not 192-bit or 256-bit blocks #ifndef CRYPTOPP_RIJNDAEL_H #define CRYPTOPP_RIJNDAEL_H #include "seckey.h" #include "secblock.h" #if CRYPTOPP_BOOL_X32 # define CRYPTOPP_DISABLE_RIJNDAEL_ASM #endif NAMESPACE_BEGIN(CryptoPP) //! \brief Rijndael block cipher information struct Rijndael_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8> { CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return CRYPTOPP_RIJNDAEL_NAME;} }; //! \brief Rijndael block cipher implementation details //! \sa <a href="http://www.weidai.com/scan-mirror/cs.html#Rijndael">Rijndael</a> class CRYPTOPP_DLL Rijndael : public Rijndael_Info, public BlockCipherDocumentation { //! \brief Rijndael block cipher data processing functionss //! \details Provides implementation common to encryption and decryption class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Rijndael_Info> { public: void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms); protected: static void FillEncTable(); static void FillDecTable(); // VS2005 workaround: have to put these on seperate lines, or error C2487 is triggered in DLL build static const byte Se[256]; static const byte Sd[256]; static const word32 rcon[]; unsigned int m_rounds; FixedSizeAlignedSecBlock<word32, 4*15> m_key; }; //! \brief Rijndael block cipher data processing functions //! \details Provides implementation for encryption transformation class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Enc : public Base { public: void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; #if CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X86 size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const; #endif }; //! \brief Rijndael block cipher data processing functions //! \details Provides implementation for decryption transformation class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Dec : public Base { public: void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; #if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const; #endif }; public: typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption; typedef BlockCipherFinal<DECRYPTION, Dec> Decryption; }; typedef Rijndael::Encryption RijndaelEncryption; typedef Rijndael::Decryption RijndaelDecryption; NAMESPACE_END #endif