Crypto++ 8.1 Free C++ class library of cryptographic schemes

rc5.h
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1 // rc5.h - originally 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 /// \brief RC5 block cipher information
15 /// \since Crypto++ 1.0
16 struct RC5_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 0, 255>, public VariableRounds<16>
17 {
18 CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "RC5";}
19 typedef word32 RC5_WORD;
20 };
21
22 /// \brief RC5 block cipher
23 /// \sa <a href="http://www.cryptopp.com/wiki/RC5">RC5</a>
24 /// \since Crypto++ 1.0
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:
50 typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
51 typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
52 };
53
54 typedef RC5::Encryption RC5Encryption;
55 typedef RC5::Decryption RC5Decryption;
56
57 NAMESPACE_END
58
59 #endif
BlockCipherDocumentation
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher...
Definition: seckey.h:398
SecBlock< RC5_WORD >
RC5
RC5 block cipher.
Definition: rc5.h:25
secblock.h
Classes and functions for secure memory allocations.
FixedBlockSize
Inherited by algorithms with fixed block size.
Definition: seckey.h:40
VariableRounds
Inherited by algorithms with variable number of rounds.
Definition: seckey.h:64
seckey.h
Classes and functions for implementing secret key algorithms.
BlockCipherFinal< ENCRYPTION, Enc >
RC5_Info
RC5 block cipher information.
Definition: rc5.h:16
VariableKeyLength
Inherited by keyed algorithms with variable key length.
Definition: seckey.h:165
BlockCipherImpl
Provides a base implementation of Algorithm and SimpleKeyingInterface for block ciphers.
Definition: seckey.h:305
CryptoPP
Crypto++ library namespace.
NameValuePairs
Interface for retrieving values given their names.
Definition: cryptlib.h:293