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// 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++ 3.2, Intel AESNI since Crypto++ 5.6.1, ARMv8 AES since Crypto++ 6.0
#ifndef CRYPTOPP_RIJNDAEL_H
#define CRYPTOPP_RIJNDAEL_H
#include "seckey.h"
#include "secblock.h"
// Clang 3.3 integrated assembler crash on Linux
#if CRYPTOPP_BOOL_X32 || (defined(CRYPTOPP_LLVM_CLANG_VERSION) && (CRYPTOPP_LLVM_CLANG_VERSION < 30400))
# define CRYPTOPP_DISABLE_RIJNDAEL_ASM
#endif
#if CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_ARM32 || CRYPTOPP_BOOL_ARM64
# define CRYPTOPP_ENABLE_ADVANCED_PROCESS_BLOCKS 1
#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 functions
//! \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 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;
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_ENABLE_ADVANCED_PROCESS_BLOCKS
Enc();
size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const;
private:
SecByteBlock m_aliasBlock;
#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_ENABLE_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
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