Crypto++ 8.6 Free C++ class library of cryptographic schemes

rc6.h
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1 // rc6.h - originally written and placed in the public domain by Wei Dai
2
3 /// \file rc6.h
4 /// \brief Classes for the RC6 block cipher
5 /// \since Crypto++ 3.0
6
7 #ifndef CRYPTOPP_RC6_H
8 #define CRYPTOPP_RC6_H
9
10 #include "seckey.h"
11 #include "secblock.h"
12
13 NAMESPACE_BEGIN(CryptoPP)
14
15 /// \brief RC6 block cipher information
16 /// \since Crypto++ 3.0
17 struct RC6_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>, public VariableRounds<20>
18 {
19 CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "RC6";}
20 typedef word32 RC6_WORD;
21 };
22
23 /// \brief RC6 block cipher
24 /// \sa <a href="http://www.cryptopp.com/wiki/RC6">RC6</a>
25 /// \since Crypto++ 3.0
26 class RC6 : public RC6_Info, public BlockCipherDocumentation
27 {
28 class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<RC6_Info>
29 {
30 public:
31 void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
32
33 protected:
34 unsigned int r; // number of rounds
35 SecBlock<RC6_WORD> sTable; // expanded key table
36 };
37
38 class CRYPTOPP_NO_VTABLE Enc : public Base
39 {
40 public:
41 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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 };
49
50 public:
51 typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
52 typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
53 };
54
55 typedef RC6::Encryption RC6Encryption;
56 typedef RC6::Decryption RC6Decryption;
57
58 NAMESPACE_END
59
60 #endif
BlockCipherFinal< ENCRYPTION, Enc >
BlockCipherImpl
Provides a base implementation of Algorithm and SimpleKeyingInterface for block ciphers.
Definition: seckey.h:306
FixedBlockSize
Inherited by algorithms with fixed block size.
Definition: seckey.h:41
NameValuePairs
Interface for retrieving values given their names.
Definition: cryptlib.h:327
RC6
RC6 block cipher.
Definition: rc6.h:27
SecBlock< RC6_WORD >
VariableKeyLength
Inherited by keyed algorithms with variable key length.
Definition: seckey.h:166
VariableRounds
Inherited by algorithms with variable number of rounds.
Definition: seckey.h:65
word32
unsigned int word32
32-bit unsigned datatype
Definition: config_int.h:72
CryptoPP
Crypto++ library namespace.
secblock.h
Classes and functions for secure memory allocations.
seckey.h
Classes and functions for implementing secret key algorithms.
BlockCipherDocumentation
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher.
Definition: seckey.h:399
RC6_Info
RC6 block cipher information.
Definition: rc6.h:18