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-rw-r--r--CryptoPP/safer.h86
1 files changed, 86 insertions, 0 deletions
diff --git a/CryptoPP/safer.h b/CryptoPP/safer.h
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+#ifndef CRYPTOPP_SAFER_H
+#define CRYPTOPP_SAFER_H
+
+/** \file
+*/
+
+#include "seckey.h"
+#include "secblock.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+/// base class, do not use directly
+class SAFER
+{
+public:
+ class CRYPTOPP_NO_VTABLE Base : public BlockCipher
+ {
+ public:
+ unsigned int OptimalDataAlignment() const {return 1;}
+ void UncheckedSetKey(const byte *userkey, unsigned int length, const NameValuePairs &params);
+
+ protected:
+ virtual bool Strengthened() const =0;
+
+ SecByteBlock keySchedule;
+ static const byte exp_tab[256];
+ static const byte log_tab[256];
+ };
+
+ class CRYPTOPP_NO_VTABLE Enc : public Base
+ {
+ public:
+ void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+ };
+
+ class CRYPTOPP_NO_VTABLE Dec : public Base
+ {
+ public:
+ void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+ };
+};
+
+template <class BASE, class INFO, bool STR>
+class CRYPTOPP_NO_VTABLE SAFER_Impl : public BlockCipherImpl<INFO, BASE>
+{
+protected:
+ bool Strengthened() const {return STR;}
+};
+
+//! _
+struct SAFER_K_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 8, 16, 8>, public VariableRounds<10, 1, 13>
+{
+ static const char *StaticAlgorithmName() {return "SAFER-K";}
+};
+
+/// <a href="http://www.weidai.com/scan-mirror/cs.html#SAFER-K">SAFER-K</a>
+class SAFER_K : public SAFER_K_Info, public SAFER, public BlockCipherDocumentation
+{
+public:
+ typedef BlockCipherFinal<ENCRYPTION, SAFER_Impl<Enc, SAFER_K_Info, false> > Encryption;
+ typedef BlockCipherFinal<DECRYPTION, SAFER_Impl<Dec, SAFER_K_Info, false> > Decryption;
+};
+
+//! _
+struct SAFER_SK_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 8, 16, 8>, public VariableRounds<10, 1, 13>
+{
+ static const char *StaticAlgorithmName() {return "SAFER-SK";}
+};
+
+/// <a href="http://www.weidai.com/scan-mirror/cs.html#SAFER-SK">SAFER-SK</a>
+class SAFER_SK : public SAFER_SK_Info, public SAFER, public BlockCipherDocumentation
+{
+public:
+ typedef BlockCipherFinal<ENCRYPTION, SAFER_Impl<Enc, SAFER_SK_Info, true> > Encryption;
+ typedef BlockCipherFinal<DECRYPTION, SAFER_Impl<Dec, SAFER_SK_Info, true> > Decryption;
+};
+
+typedef SAFER_K::Encryption SAFER_K_Encryption;
+typedef SAFER_K::Decryption SAFER_K_Decryption;
+
+typedef SAFER_SK::Encryption SAFER_SK_Encryption;
+typedef SAFER_SK::Decryption SAFER_SK_Decryption;
+
+NAMESPACE_END
+
+#endif