Crypto++  5.6.3
Free C++ class library of cryptographic schemes
gost.h
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1 // gost.h - written and placed in the public domain by Wei Dai
2 
3 //! \file gost.h
4 //! \brief Classes for the GIST block cipher
5 
6 #ifndef CRYPTOPP_GOST_H
7 #define CRYPTOPP_GOST_H
8 
9 #include "seckey.h"
10 #include "secblock.h"
11 
12 NAMESPACE_BEGIN(CryptoPP)
13 
14 //! \class GOST_Info
15 //! \brief GOST block cipher information
16 struct GOST_Info : public FixedBlockSize<8>, public FixedKeyLength<32>
17 {
18  static const char *StaticAlgorithmName() {return "GOST";}
19 };
20 
21 //! \class GOST
22 //! \brief GOST block cipher
23 //! \sa <a href="http://www.weidai.com/scan-mirror/cs.html#GOST">GOST</a>
24 class GOST : public GOST_Info, public BlockCipherDocumentation
25 {
26  class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<GOST_Info>
27  {
28  public:
29  void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
30 
31  protected:
32  static void PrecalculateSTable();
33 
34  static const byte sBox[8][16];
35  static volatile bool sTableCalculated;
36  static word32 sTable[4][256];
37 
39  };
40 
41  class CRYPTOPP_NO_VTABLE Enc : public Base
42  {
43  public:
44  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
45  };
46 
47  class CRYPTOPP_NO_VTABLE Dec : public Base
48  {
49  public:
50  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
51  };
52 
53 public:
56 };
57 
60 
61 NAMESPACE_END
62 
63 #endif
Inherited by keyed algorithms with fixed key length.
Definition: seckey.h:117
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher...
Definition: seckey.h:396
Classes and functions for secure memory allocations.
Inherited by algorithms with fixed block size.
Definition: seckey.h:34
Classes and functions for implementing secret key algorithms.
GOST block cipher information.
Definition: gost.h:16
GOST block cipher.
Definition: gost.h:24
Provides a base implementation of Algorithm and SimpleKeyingInterface for block ciphers.
Definition: seckey.h:303
Crypto++ library namespace.
Interface for retrieving values given their names.
Definition: cryptlib.h:277