00001 #ifndef CRYPTOPP_SKIPJACK_H
00002 #define CRYPTOPP_SKIPJACK_H
00003
00004
00005
00006
00007 #include "seckey.h"
00008 #include "secblock.h"
00009
00010 NAMESPACE_BEGIN(CryptoPP)
00011
00012 struct SKIPJACK_Info : public FixedBlockSize<8>, public FixedKeyLength<10>
00013 {
00014 static const char *StaticAlgorithmName() {return "SKIPJACK";}
00015 };
00016
00017
00018 class SKIPJACK : public SKIPJACK_Info, public BlockCipherDocumentation
00019 {
00020 class Base : public BlockCipherBaseTemplate<SKIPJACK_Info>
00021 {
00022 public:
00023 void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length);
00024
00025 protected:
00026 static const byte fTable[256];
00027
00028 FixedSizeSecBlock<byte[256], 10> tab;
00029 };
00030
00031 class Enc : public Base
00032 {
00033 public:
00034 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00035 private:
00036 static const byte Se[256];
00037 static const word32 Te[4][256];
00038 };
00039
00040 class Dec : public Base
00041 {
00042 public:
00043 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00044 private:
00045 static const byte Sd[256];
00046 static const word32 Td[4][256];
00047 };
00048
00049 public:
00050 typedef BlockCipherTemplate<ENCRYPTION, Enc> Encryption;
00051 typedef BlockCipherTemplate<DECRYPTION, Dec> Decryption;
00052 };
00053
00054 typedef SKIPJACK::Encryption SKIPJACKEncryption;
00055 typedef SKIPJACK::Decryption SKIPJACKDecryption;
00056
00057 NAMESPACE_END
00058
00059 #endif