Go to the documentation of this file.00001 #ifndef CRYPTOPP_SAFER_H
00002 #define CRYPTOPP_SAFER_H
00003
00004
00005
00006
00007 #include "seckey.h"
00008 #include "secblock.h"
00009
00010 NAMESPACE_BEGIN(CryptoPP)
00011
00012
00013 class SAFER
00014 {
00015 public:
00016 class CRYPTOPP_NO_VTABLE Base : public BlockCipher
00017 {
00018 public:
00019 unsigned int OptimalDataAlignment() const {return 1;}
00020 void UncheckedSetKey(const byte *userkey, unsigned int length, const NameValuePairs ¶ms);
00021
00022 protected:
00023 virtual bool Strengthened() const =0;
00024
00025 SecByteBlock keySchedule;
00026 static const byte exp_tab[256];
00027 static const byte log_tab[256];
00028 };
00029
00030 class CRYPTOPP_NO_VTABLE Enc : public Base
00031 {
00032 public:
00033 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00034 };
00035
00036 class CRYPTOPP_NO_VTABLE Dec : public Base
00037 {
00038 public:
00039 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00040 };
00041 };
00042
00043 template <class BASE, class INFO, bool STR>
00044 class CRYPTOPP_NO_VTABLE SAFER_Impl : public BlockCipherImpl<INFO, BASE>
00045 {
00046 protected:
00047 bool Strengthened() const {return STR;}
00048 };
00049
00050
00051 struct SAFER_K_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 8, 16, 8>, public VariableRounds<10, 1, 13>
00052 {
00053 static const char *StaticAlgorithmName() {return "SAFER-K";}
00054 };
00055
00056
00057 class SAFER_K : public SAFER_K_Info, public SAFER, public BlockCipherDocumentation
00058 {
00059 public:
00060 typedef BlockCipherFinal<ENCRYPTION, SAFER_Impl<Enc, SAFER_K_Info, false> > Encryption;
00061 typedef BlockCipherFinal<DECRYPTION, SAFER_Impl<Dec, SAFER_K_Info, false> > Decryption;
00062 };
00063
00064
00065 struct SAFER_SK_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 8, 16, 8>, public VariableRounds<10, 1, 13>
00066 {
00067 static const char *StaticAlgorithmName() {return "SAFER-SK";}
00068 };
00069
00070
00071 class SAFER_SK : public SAFER_SK_Info, public SAFER, public BlockCipherDocumentation
00072 {
00073 public:
00074 typedef BlockCipherFinal<ENCRYPTION, SAFER_Impl<Enc, SAFER_SK_Info, true> > Encryption;
00075 typedef BlockCipherFinal<DECRYPTION, SAFER_Impl<Dec, SAFER_SK_Info, true> > Decryption;
00076 };
00077
00078 typedef SAFER_K::Encryption SAFER_K_Encryption;
00079 typedef SAFER_K::Decryption SAFER_K_Decryption;
00080
00081 typedef SAFER_SK::Encryption SAFER_SK_Encryption;
00082 typedef SAFER_SK::Decryption SAFER_SK_Decryption;
00083
00084 NAMESPACE_END
00085
00086 #endif