Crypto++  8.8
Free C++ class library of cryptographic schemes
square.h
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1 // square.h - originally written and placed in the public domain by Wei Dai
2 
3 /// \file square.h
4 /// \brief Classes for the Square block cipher
5 
6 #ifndef CRYPTOPP_SQUARE_H
7 #define CRYPTOPP_SQUARE_H
8 
9 #include "seckey.h"
10 #include "secblock.h"
11 
12 NAMESPACE_BEGIN(CryptoPP)
13 
14 /// \brief Square block cipher information
15 /// \since Crypto++ 2.2
16 struct Square_Info : public FixedBlockSize<16>, public FixedKeyLength<16>, FixedRounds<8>
17 {
18  CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Square";}
19 };
20 
21 /// \brief Square block cipher
22 /// \sa <a href="http://www.cryptopp.com/wiki/Square">Square</a>
23 /// \since Crypto++ 2.2
25 {
26  class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Square_Info>
27  {
28  public:
29  void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
30 
31  protected:
32  FixedSizeSecBlock<word32, 4*(ROUNDS+1)> m_roundkeys;
33  };
34 
35  class CRYPTOPP_NO_VTABLE Enc : public Base
36  {
37  public:
38  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
39  private:
40  static const byte Se[256];
41  static const word32 Te[4][256];
42  };
43 
44  class CRYPTOPP_NO_VTABLE Dec : public Base
45  {
46  public:
47  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
48  private:
49  static const byte Sd[256];
50  static const word32 Td[4][256];
51  };
52 
53 public:
56 };
57 
60 
61 NAMESPACE_END
62 
63 #endif
Interface for one direction (encryption or decryption) of a block cipher.
Definition: cryptlib.h:1288
Provides a base implementation of Algorithm and SimpleKeyingInterface for block ciphers.
Definition: seckey.h:306
Inherited by algorithms with fixed block size.
Definition: seckey.h:41
Inherited by keyed algorithms with fixed key length.
Definition: seckey.h:125
Inherited by algorithms with fixed number of rounds.
Definition: seckey.h:53
static const int ROUNDS
The number of rounds for the algorithm provided as a constant.
Definition: seckey.h:56
Fixed size stack-based SecBlock.
Definition: secblock.h:1246
Interface for retrieving values given their names.
Definition: cryptlib.h:327
Square block cipher.
Definition: square.h:25
unsigned int word32
32-bit unsigned datatype
Definition: config_int.h:72
Crypto++ library namespace.
Classes and functions for secure memory allocations.
Classes and functions for implementing secret key algorithms.
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher.
Definition: seckey.h:399
Square block cipher information.
Definition: square.h:17