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60 lines
1.4 KiB
60 lines
1.4 KiB
// gost.h - written and placed in the public domain by Wei Dai |
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//! \file gost.h |
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//! \brief Classes for the GIST block cipher |
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#ifndef CRYPTOPP_GOST_H |
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#define CRYPTOPP_GOST_H |
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#include "seckey.h" |
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#include "secblock.h" |
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NAMESPACE_BEGIN(CryptoPP) |
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//! _ |
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struct GOST_Info : public FixedBlockSize<8>, public FixedKeyLength<32> |
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{ |
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static const char *StaticAlgorithmName() {return "GOST";} |
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}; |
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/// <a href="http://www.weidai.com/scan-mirror/cs.html#GOST">GOST</a> |
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class GOST : public GOST_Info, public BlockCipherDocumentation |
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{ |
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class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<GOST_Info> |
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{ |
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public: |
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void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms); |
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protected: |
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static void PrecalculateSTable(); |
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static const byte sBox[8][16]; |
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static volatile bool sTableCalculated; |
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static word32 sTable[4][256]; |
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FixedSizeSecBlock<word32, 8> key; |
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}; |
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class CRYPTOPP_NO_VTABLE Enc : public Base |
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{ |
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public: |
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; |
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}; |
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class CRYPTOPP_NO_VTABLE Dec : public Base |
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{ |
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public: |
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; |
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}; |
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public: |
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typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption; |
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typedef BlockCipherFinal<DECRYPTION, Dec> Decryption; |
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}; |
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typedef GOST::Encryption GOSTEncryption; |
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typedef GOST::Decryption GOSTDecryption; |
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NAMESPACE_END |
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#endif
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