61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
// rc6.h - originally written and placed in the public domain by Wei Dai
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/// \file rc6.h
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/// \brief Classes for the RC6 block cipher
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/// \since Crypto++ 3.0
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#ifndef CRYPTOPP_RC6_H
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#define CRYPTOPP_RC6_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 RC6 block cipher information
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/// \since Crypto++ 3.0
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struct RC6_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>, public VariableRounds<20>
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{
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CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "RC6";}
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typedef word32 RC6_WORD;
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};
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/// \brief RC6 block cipher
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/// \sa <a href="http://www.cryptopp.com/wiki/RC6">RC6</a>
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/// \since Crypto++ 3.0
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class RC6 : public RC6_Info, public BlockCipherDocumentation
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{
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class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<RC6_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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unsigned int r; // number of rounds
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SecBlock<RC6_WORD> sTable; // expanded key table
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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 RC6::Encryption RC6Encryption;
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typedef RC6::Decryption RC6Decryption;
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NAMESPACE_END
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#endif
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