Crypto++  5.6.5
Free C++ class library of cryptographic schemes
twofish.h
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1 // twofish.h - originally written and placed in the public domain by Wei Dai
2 
3 /// \file twofish.h
4 /// \brief Classes for the Twofish block cipher
5 
6 #ifndef CRYPTOPP_TWOFISH_H
7 #define CRYPTOPP_TWOFISH_H
8 
9 #include "seckey.h"
10 #include "secblock.h"
11 
12 NAMESPACE_BEGIN(CryptoPP)
13 
14 /// \brief Twofish block cipher information
15 struct Twofish_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>, FixedRounds<16>
16 {
17  CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Twofish";}
18 };
19 
20 /// \brief Twofish block cipher
21 //~ \sa <a href="http://www.cryptopp.com/wiki/Twofish">Twofish</a>
23 {
24  class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Twofish_Info>
25  {
26  public:
27  void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
28 
29  protected:
30  static word32 h0(word32 x, const word32 *key, unsigned int kLen);
31  static word32 h(word32 x, const word32 *key, unsigned int kLen);
32 
33  static const byte q[2][256];
34  static const word32 mds[4][256];
35 
38  };
39 
40  class CRYPTOPP_NO_VTABLE Enc : public Base
41  {
42  public:
43  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
44  };
45 
46  class CRYPTOPP_NO_VTABLE Dec : public Base
47  {
48  public:
49  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
50  };
51 
52 public:
55 };
56 
59 
60 NAMESPACE_END
61 
62 #endif
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher...
Definition: seckey.h:419
Interface for one direction (encryption or decryption) of a block cipher.
Definition: cryptlib.h:1228
Classes and functions for secure memory allocations.
Inherited by algorithms with fixed block size.
Definition: seckey.h:39
Twofish block cipher.
Definition: twofish.h:22
Twofish block cipher information.
Definition: twofish.h:15
Classes and functions for implementing secret key algorithms.
Inherited by algorithms with fixed number of rounds.
Definition: seckey.h:74
Inherited by keyed algorithms with variable key length.
Definition: seckey.h:187
Provides a base implementation of Algorithm and SimpleKeyingInterface for block ciphers.
Definition: seckey.h:326
Crypto++ library namespace.
Interface for retrieving values given their names.
Definition: cryptlib.h:291