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  • Committer: Bazaar Package Importer
  • Author(s): Stephen Zander
  • Date: 2004-04-19 18:10:28 UTC
  • Revision ID: james.westby@ubuntu.com-20040419181028-a9dyhq48t3slmcwt
Tags: upstream-5.1
Import upstream version 5.1

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skipjack.h
 
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#ifndef CRYPTOPP_SKIPJACK_H
 
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#define CRYPTOPP_SKIPJACK_H
 
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/** \file
 
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*/
 
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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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struct SKIPJACK_Info : public FixedBlockSize<8>, public FixedKeyLength<10>
 
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{
 
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        static const char *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 Base : public BlockCipherBaseTemplate<SKIPJACK_Info>
 
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        {
 
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        public:
 
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                void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length);
 
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        protected:
 
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                static const byte fTable[256];
 
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                FixedSizeSecBlock<byte[256], 10> tab;
 
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        };
 
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        class 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 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 BlockCipherTemplate<ENCRYPTION, Enc> Encryption;
 
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        typedef BlockCipherTemplate<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