102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
#ifndef CRYPTOPP_SAFER_H
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#define CRYPTOPP_SAFER_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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/// base class, do not use directly
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class SAFER
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{
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public:
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class Base : public BlockCipher
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{
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public:
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unsigned int GetAlignment() const {return 1;}
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void UncheckedSetKey(CipherDir dir, const byte *userkey, unsigned int length, unsigned nof_rounds);
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bool strengthened;
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SecByteBlock keySchedule;
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static const byte exp_tab[256];
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static const byte log_tab[256];
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};
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class Enc : public Base
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{
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public:
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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};
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class Dec : public Base
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{
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public:
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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};
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};
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struct SAFER_K_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 8, 16, 8>, public VariableRounds<10, 1, 13>
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{
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static const char *StaticAlgorithmName() {return "SAFER-K";}
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static unsigned int DefaultRounds(unsigned int keylength) {return keylength == 8 ? 6 : 10;}
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};
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/// <a href="http://www.weidai.com/scan-mirror/cs.html#SAFER-K">SAFER-K</a>
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class SAFER_K : public SAFER_K_Info, public SAFER, public BlockCipherDocumentation
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{
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class Enc : public BlockCipherBaseTemplate<SAFER_K_Info, SAFER::Enc>
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{
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public:
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Enc() {strengthened = false;}
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};
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class Dec : public BlockCipherBaseTemplate<SAFER_K_Info, SAFER::Dec>
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{
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public:
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Dec() {strengthened = false;}
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};
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public:
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typedef BlockCipherTemplate<ENCRYPTION, Enc> Encryption;
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typedef BlockCipherTemplate<DECRYPTION, Dec> Decryption;
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};
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struct SAFER_SK_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 8, 16, 8>, public VariableRounds<10, 1, 13>
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{
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static const char *StaticAlgorithmName() {return "SAFER-SK";}
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static unsigned int DefaultRounds(unsigned int keylength) {return keylength == 8 ? 8 : 10;}
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};
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/// <a href="http://www.weidai.com/scan-mirror/cs.html#SAFER-SK">SAFER-SK</a>
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class SAFER_SK : public SAFER_SK_Info, public SAFER, public BlockCipherDocumentation
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{
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class Enc : public BlockCipherBaseTemplate<SAFER_SK_Info, SAFER::Enc>
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{
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public:
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Enc() {strengthened = true;}
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};
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class Dec : public BlockCipherBaseTemplate<SAFER_SK_Info, SAFER::Dec>
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{
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public:
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Dec() {strengthened = true;}
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};
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public:
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typedef BlockCipherTemplate<ENCRYPTION, Enc> Encryption;
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typedef BlockCipherTemplate<DECRYPTION, Dec> Decryption;
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};
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typedef SAFER_K::Encryption SAFER_K_Encryption;
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typedef SAFER_K::Decryption SAFER_K_Decryption;
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typedef SAFER_SK::Encryption SAFER_SK_Encryption;
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typedef SAFER_SK::Decryption SAFER_SK_Decryption;
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NAMESPACE_END
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#endif
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