text: // rijndael.h - originally 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
  /// \since Rijndael since Crypto++ 3.1, Intel AES-NI since Crypto++ 5.6.1, ARMv8 AES since Crypto++ 6.0,
  ///   Power8 AES since Crypto++ 6.0, ARMv7 AES since Crypto++ 8.0
  
  #ifndef CryptoPP_NV_2_RIJNDAEL_H
  #define CryptoPP_NV_2_RIJNDAEL_H
  
  #include "seckey.h"
  #include "secblock.h"
  
  // Clang 3.3 integrated assembler crash on Linux. Clang 3.4 due to compiler
  // error with .intel_syntax, http://llvm.org/bugs/show_bug.cgi?id=24232
  #if CryptoPP_NV_2_BOOL_X32 || defined(CryptoPP_NV_2_DISABLE_MIXED_ASM)
  # define CryptoPP_NV_2_DISABLE_RIJNDAEL_ASM 1
  #endif
  
  #if CryptoPP_NV_2_BOOL_X64 || CryptoPP_NV_2_BOOL_X32 || CryptoPP_NV_2_BOOL_X86 || CryptoPP_NV_2_BOOL_ARM32 || \
  	CryptoPP_NV_2_BOOL_ARMV8 || CryptoPP_NV_2_BOOL_PPC32 || CryptoPP_NV_2_BOOL_PPC64
  # define CryptoPP_NV_2_RIJNDAEL_ADVANCED_PROCESS_BLOCKS 1
  #endif
  
  NAMESPACE_BEGIN(CryptoPP_NV_2)
  
  /// \brief Rijndael block cipher information
  /// \details All key sizes are supported. The library only provides Rijndael with 128-bit blocks,
  ///   and not 192-bit or 256-bit blocks
  /// \since Rijndael since Crypto++ 3.1, Intel AES-NI since Crypto++ 5.6.1, ARMv8 AES since Crypto++ 6.0,
  ///   Power8 AES since Crypto++ 6.0, ARMv7 AES since Crypto++ 8.0
  struct Rijndael_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>
  {
  	CryptoPP_NV_2_DLL static const char * CryptoPP_NV_2_API StaticAlgorithmName() {return CryptoPP_NV_2_RIJNDAEL_NAME;}
  };
  
  /// \brief Rijndael block cipher
  /// \details All key sizes are supported. The library only provides Rijndael with 128-bit blocks,
  ///   and not 192-bit or 256-bit blocks
  /// \since Rijndael since Crypto++ 3.1, Intel AES-NI since Crypto++ 5.6.1, ARMv8 AES since Crypto++ 6.0,
  ///   Power8 AES since Crypto++ 6.0, ARMv7 AES since Crypto++ 8.0
  /// \sa <a href="http://www.CryptoPP_NV_2.com/wiki/Rijndael">Rijndael</a>
  class CryptoPP_NV_2_DLL Rijndael : public Rijndael_Info, public BlockCipherDocumentation
  {
  	/// \brief Rijndael block cipher transformation functions
  	/// \details Provides implementation common to encryption and decryption
  	class CryptoPP_NV_2_DLL CryptoPP_NV_2_NO_VTABLE Base : public BlockCipherImpl<Rijndael_Info>
  	{
  	public:
  		void UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs &params);
  		std::string AlgorithmProvider() const;
  		unsigned int OptimalDataAlignment() const;
  
  	protected:
  		static void FillEncTable();
  		static void FillDecTable();
  
  		// VS2005 workaround: have to put these on separate 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;
  		SecBlock<word32, AllocatorWithCleanup<word32, true> > m_key;
  		mutable SecByteBlock m_aliasBlock;
  	};
  
  	/// \brief Encryption transformation
  	/// \details Enc provides implementation for encryption transformation. All key sizes are supported.
  	///   The library only provides Rijndael with 128-bit blocks, and not 192-bit or 256-bit blocks
  	/// \since Rijndael since Crypto++ 3.1, Intel AES-NI since Crypto++ 5.6.1, ARMv8 AES since Crypto++ 6.0,
  	///   Power8 AES since Crypto++ 6.0, ARMv7 AES since Crypto++ 8.0
  	class CryptoPP_NV_2_DLL CryptoPP_NV_2_NO_VTABLE Enc : public Base
  	{
  	public:
  		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
  #if CryptoPP_NV_2_RIJNDAEL_ADVANCED_PROCESS_BLOCKS
  		size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const;
  #endif
  	};
  
  	/// \brief Decryption transformation
  	/// \details Dec provides implementation for decryption transformation. All key sizes are supported.
  	///   The library only provides Rijndael with 128-bit blocks, and not 192-bit or 256-bit blocks
  	/// \since Rijndael since Crypto++ 3.1, Intel AES-NI since Crypto++ 5.6.1, ARMv8 AES since Crypto++ 6.0,
  	///   Power8 AES since Crypto++ 6.0, ARMv7 AES since Crypto++ 8.0
  	class CryptoPP_NV_2_DLL CryptoPP_NV_2_NO_VTABLE Dec : public Base
  	{
  	public:
  		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
  #if CryptoPP_NV_2_RIJNDAEL_ADVANCED_PROCESS_BLOCKS
  		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
  