sm4.h

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// sm4.h - written and placed in the public domain by Jeffrey Walton and Han Lulu
 
 
#ifndef CRYPTOPP_SM4_H
#define CRYPTOPP_SM4_H
 
#include "config.h"
#include "seckey.h"
#include "secblock.h"
 
#if (CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X86)
# ifndef CRYPTOPP_DISABLE_SM4_SIMD
#  define CRYPTOPP_SM4_ADVANCED_PROCESS_BLOCKS 1
# endif
#endif
 
NAMESPACE_BEGIN(CryptoPP)
 
 
struct SM4_Info : public FixedBlockSize<16>, FixedKeyLength<16>
{
    static const std::string StaticAlgorithmName()
    {
        return "SM4";
    }
};
 
class CRYPTOPP_NO_VTABLE SM4 : public SM4_Info, public BlockCipherDocumentation
{
public:
    class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SM4_Info>
    {
    protected:
        void UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs &params);
 
        SecBlock<word32, AllocatorWithCleanup<word32> > m_rkeys;
        mutable SecBlock<word32, AllocatorWithCleanup<word32> > m_wspace;
    };
 
    class CRYPTOPP_NO_VTABLE Enc : public Base
    {
    public:
        std::string AlgorithmProvider() const;
    protected:
        void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
#if CRYPTOPP_SM4_ADVANCED_PROCESS_BLOCKS
        size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const;
#endif
    };
 
    class CRYPTOPP_NO_VTABLE Dec : public Base
    {
    protected:
        void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
    };
 
    typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
    typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
};
 
NAMESPACE_END
 
#endif // CRYPTOPP_SM4_H