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61 lines
1.6 KiB
61 lines
1.6 KiB
// twofish.h - written and placed in the public domain by Wei Dai |
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//! \file twofish.h |
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//! \brief Classes for the Twofish block cipher |
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#ifndef CRYPTOPP_TWOFISH_H |
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#define CRYPTOPP_TWOFISH_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 Twofish_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 0, 32>, FixedRounds<16> |
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{ |
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static const char *StaticAlgorithmName() {return "Twofish";} |
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}; |
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/// <a href="http://www.weidai.com/scan-mirror/cs.html#Twofish">Twofish</a> |
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class Twofish : public Twofish_Info, public BlockCipherDocumentation |
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{ |
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class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Twofish_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 word32 h0(word32 x, const word32 *key, unsigned int kLen); |
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static word32 h(word32 x, const word32 *key, unsigned int kLen); |
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static const byte q[2][256]; |
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static const word32 mds[4][256]; |
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FixedSizeSecBlock<word32, 40> m_k; |
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FixedSizeSecBlock<word32, 4*256> m_s; |
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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 Twofish::Encryption TwofishEncryption; |
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typedef Twofish::Decryption TwofishDecryption; |
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NAMESPACE_END |
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#endif
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