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#ifndef CRYPTOPP_IDEA_H
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#define CRYPTOPP_IDEA_H
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#include "seckey.h"
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#include "secblock.h"
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00010 NAMESPACE_BEGIN(CryptoPP)
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00013 struct
IDEA_Info : public
FixedBlockSize<8>, public
FixedKeyLength<16>, public
FixedRounds<8>
00014 {
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static const char *StaticAlgorithmName() {
return "IDEA";}
00016 };
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00019 class IDEA :
public IDEA_Info,
public BlockCipherDocumentation
00020 {
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class CRYPTOPP_NO_VTABLE Base :
public BlockCipherImpl<IDEA_Info>
00022 {
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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();
00032 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:
00044 typedef BlockCipherFinal<ENCRYPTION, Base> Encryption;
00045 typedef BlockCipherFinal<DECRYPTION, Base> Decryption;
00046 };
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typedef IDEA::Encryption IDEAEncryption;
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typedef IDEA::Decryption IDEADecryption;
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00051 NAMESPACE_END
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#endif