Crypto++  8.2
Free C++ class library of cryptographic schemes
serpent.h
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1 // serpent.h - originally written and placed in the public domain by Wei Dai
2 
3 /// \file serpent.h
4 /// \brief Classes for the Serpent block cipher
5 /// \sa <a href="https://www.cl.cam.ac.uk/~rja14/serpent.html">A
6 /// Candidate Block Cipher for the Advanced Encryption Standard</a>
7 
8 #ifndef CRYPTOPP_SERPENT_H
9 #define CRYPTOPP_SERPENT_H
10 
11 #include "seckey.h"
12 #include "secblock.h"
13 
14 NAMESPACE_BEGIN(CryptoPP)
15 
16 /// \brief Serpent block cipher information
17 /// \since Crypto++ 3.1
18 struct Serpent_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>, public FixedRounds<32>
19 {
20  CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Serpent";}
21 };
22 
23 /// \brief Serpent block cipher
24 /// \sa <a href="http://www.cryptopp.com/wiki/Serpent">Serpent</a> on the
25 /// Crypto++ wiki, <a href="https://www.cl.cam.ac.uk/~rja14/serpent.html">A
26 /// Candidate Block Cipher for the Advanced Encryption Standard</a>
27 /// \since Crypto++ 3.1
29 {
30  /// \brief Serpen block cipher base implementation
31  /// \details Provides implementation common to encryption and decryption
32  /// \since Crypto++ 3.1
33  class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Serpent_Info>
34  {
35  public:
36  void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
37 
38  protected:
40  };
41 
42  /// \brief Serpent encryption transformation
43  /// \details Enc provides the encryption transformation.
44  /// All key sizes are supported.
45  /// \since Crypto++ 3.1
46  class CRYPTOPP_NO_VTABLE Enc : public Base
47  {
48  public:
49  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
50  };
51 
52  /// \brief Serpent decryption transformation
53  /// \details Dec provides the decryption transformation.
54  /// All key sizes are supported.
55  /// \since Crypto++ 3.1
56  class CRYPTOPP_NO_VTABLE Dec : public Base
57  {
58  public:
59  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
60  };
61 
62 public:
65 };
66 
69 
70 NAMESPACE_END
71 
72 #endif // CRYPTOPP_SERPENT_H
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher.
Definition: seckey.h:398
Serpent block cipher.
Definition: serpent.h:28
Interface for one direction (encryption or decryption) of a block cipher.
Definition: cryptlib.h:1278
Classes and functions for secure memory allocations.
Inherited by algorithms with fixed block size.
Definition: seckey.h:40
Classes and functions for implementing secret key algorithms.
Inherited by algorithms with fixed number of rounds.
Definition: seckey.h:52
Inherited by keyed algorithms with variable key length.
Definition: seckey.h:165
Serpent block cipher information.
Definition: serpent.h:18
Provides a base implementation of Algorithm and SimpleKeyingInterface for block ciphers.
Definition: seckey.h:305
Crypto++ library namespace.
Interface for retrieving values given their names.
Definition: cryptlib.h:321