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57 lines
1.4 KiB
57 lines
1.4 KiB
5 years ago
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// rc5.h - written and placed in the public domain by Wei Dai
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//! \file rc5.h
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//! \brief Classes for the RC5 block cipher
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#ifndef CRYPTOPP_RC5_H
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#define CRYPTOPP_RC5_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 RC5_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 0, 255>, public VariableRounds<16>
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{
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static const char *StaticAlgorithmName() {return "RC5";}
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typedef word32 RC5_WORD;
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};
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/// <a href="http://www.weidai.com/scan-mirror/cs.html#RC5">RC5</a>
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class RC5 : public RC5_Info, public BlockCipherDocumentation
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{
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class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<RC5_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<RC5_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 RC5::Encryption RC5Encryption;
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typedef RC5::Decryption RC5Decryption;
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NAMESPACE_END
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#endif
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