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64 lines
1.6 KiB
64 lines
1.6 KiB
5 years ago
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// skipjack.h - written and placed in the public domain by Wei Dai
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//! \file skipjack.h
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//! \brief Classes for the SKIPJACK block cipher
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#ifndef CRYPTOPP_SKIPJACK_H
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#define CRYPTOPP_SKIPJACK_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 SKIPJACK_Info : public FixedBlockSize<8>, public FixedKeyLength<10>
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{
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CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return "SKIPJACK";}
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};
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/// <a href="http://www.weidai.com/scan-mirror/cs.html#SKIPJACK">SKIPJACK</a>
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class SKIPJACK : public SKIPJACK_Info, public BlockCipherDocumentation
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{
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class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SKIPJACK_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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unsigned int OptimalDataAlignment() const {return GetAlignmentOf<word16>();}
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protected:
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static const byte fTable[256];
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FixedSizeSecBlock<byte, 10*256> tab;
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};
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class CRYPTOPP_DLL 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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private:
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static const byte Se[256];
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static const word32 Te[4][256];
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};
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class CRYPTOPP_DLL 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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private:
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static const byte Sd[256];
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static const word32 Td[4][256];
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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 SKIPJACK::Encryption SKIPJACKEncryption;
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typedef SKIPJACK::Decryption SKIPJACKDecryption;
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NAMESPACE_END
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#endif
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