mirror of
https://github.com/shadps4-emu/ext-cryptopp.git
synced 2024-11-23 18:09:48 +00:00
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
#ifndef CRYPTOPP_IDEA_H
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#define CRYPTOPP_IDEA_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 IDEA_Info : public FixedBlockSize<8>, public FixedKeyLength<16>, public FixedRounds<8>
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{
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static const char *StaticAlgorithmName() {return "IDEA";}
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};
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/// <a href="http://www.weidai.com/scan-mirror/cs.html#IDEA">IDEA</a>
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class IDEA : public IDEA_Info, public BlockCipherDocumentation
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{
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class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<IDEA_Info>
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{
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public:
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unsigned int GetAlignment() const {return 2;}
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length);
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private:
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void EnKey(const byte *);
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void DeKey();
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FixedSizeSecBlock<word, 6*ROUNDS+4> m_key;
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#ifdef IDEA_LARGECACHE
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static inline void LookupMUL(word &a, word b);
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void LookupKeyLogs();
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static void BuildLogTables();
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static bool tablesBuilt;
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static word16 log[0x10000], antilog[0x10000];
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#endif
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};
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public:
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typedef BlockCipherFinal<ENCRYPTION, Base> Encryption;
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typedef BlockCipherFinal<DECRYPTION, Base> Decryption;
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};
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typedef IDEA::Encryption IDEAEncryption;
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typedef IDEA::Decryption IDEADecryption;
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NAMESPACE_END
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#endif
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