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72 lines
2.3 KiB
72 lines
2.3 KiB
// serpent.h - originally written and placed in the public domain by Wei Dai |
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/// \file serpent.h |
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/// \brief Classes for the Serpent block cipher |
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/// \sa <a href="https://www.cl.cam.ac.uk/~rja14/serpent.html">A |
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/// Candidate Block Cipher for the Advanced Encryption Standard</a> |
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#ifndef CRYPTOPP_SERPENT_H |
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#define CRYPTOPP_SERPENT_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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/// \brief Serpent block cipher information |
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/// \since Crypto++ 3.1 |
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struct Serpent_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>, public FixedRounds<32> |
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{ |
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CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Serpent";} |
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}; |
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/// \brief Serpent block cipher |
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/// \sa <a href="http://www.cryptopp.com/wiki/Serpent">Serpent</a> on the |
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/// Crypto++ wiki, <a href="https://www.cl.cam.ac.uk/~rja14/serpent.html">A |
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/// Candidate Block Cipher for the Advanced Encryption Standard</a> |
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/// \since Crypto++ 3.1 |
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class Serpent : public Serpent_Info, public BlockCipherDocumentation |
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{ |
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/// \brief Serpen block cipher base implementation |
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/// \details Provides implementation common to encryption and decryption |
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/// \since Crypto++ 3.1 |
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class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Serpent_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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FixedSizeSecBlock<word32, 33*4> m_key; |
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}; |
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/// \brief Serpent encryption transformation |
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/// \details Enc provides the encryption transformation. |
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/// All key sizes are supported. |
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/// \since Crypto++ 3.1 |
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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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/// \brief Serpent decryption transformation |
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/// \details Dec provides the decryption transformation. |
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/// All key sizes are supported. |
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/// \since Crypto++ 3.1 |
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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 Serpent::Encryption SerpentEncryption; |
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typedef Serpent::Decryption SerpentDecryption; |
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NAMESPACE_END |
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#endif // CRYPTOPP_SERPENT_H
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