Crypto++  5.6.4
Free C++ class library of cryptographic schemes
rc5.h
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1 // rc5.h - written and placed in the public domain by Wei Dai
2 
3 //! \file rc5.h
4 //! \brief Classes for the RC5 block cipher
5 
6 #ifndef CRYPTOPP_RC5_H
7 #define CRYPTOPP_RC5_H
8 
9 #include "seckey.h"
10 #include "secblock.h"
11 
12 NAMESPACE_BEGIN(CryptoPP)
13 
14 //! \class RC5_Info
15 //! \brief RC5 block cipher information
16 struct RC5_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 0, 255>, public VariableRounds<16>
17 {
18  CRYPTOPP_CONSTEXPR static const char *StaticAlgorithmName() {return "RC5";}
19  typedef word32 RC5_WORD;
20 };
21 
22 //! \class RC5
23 //! \brief RC5 block cipher
24 //! \sa <a href="http://www.weidai.com/scan-mirror/cs.html#RC5">RC5</a>
25 class RC5 : public RC5_Info, public BlockCipherDocumentation
26 {
27  class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<RC5_Info>
28  {
29  public:
30  void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
31 
32  protected:
33  unsigned int r; // number of rounds
34  SecBlock<RC5_WORD> sTable; // expanded key table
35  };
36 
37  class CRYPTOPP_NO_VTABLE Enc : public Base
38  {
39  public:
40  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
41  };
42 
43  class CRYPTOPP_NO_VTABLE Dec : public Base
44  {
45  public:
46  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
47  };
48 
49 public:
52 };
53 
56 
57 NAMESPACE_END
58 
59 #endif
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher...
Definition: seckey.h:423
RC5 block cipher.
Definition: rc5.h:25
Classes and functions for secure memory allocations.
Inherited by algorithms with fixed block size.
Definition: seckey.h:34
Inherited by algorithms with variable number of rounds.
Definition: seckey.h:60
Classes and functions for implementing secret key algorithms.
RC5 block cipher information.
Definition: rc5.h:16
Inherited by keyed algorithms with variable key length.
Definition: seckey.h:177
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:282