Crypto++ 8.1 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
6 #ifndef CRYPTOPP_SERPENT_H
7 #define CRYPTOPP_SERPENT_H
8
9 #include "seckey.h"
10 #include "secblock.h"
11
12 NAMESPACE_BEGIN(CryptoPP)
13
14 /// \brief Serpent block cipher information
15 /// \since Crypto++ 3.1
16 struct Serpent_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>, public FixedRounds<32>
17 {
18 CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Serpent";}
19 };
20
21 /// \brief Serpent block cipher
22 /// \sa <a href="http://www.cryptopp.com/wiki/Serpent">Serpent</a>
23 /// \since Crypto++ 3.1
24 class Serpent : public Serpent_Info, public BlockCipherDocumentation
25 {
26 class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Serpent_Info>
27 {
28 public:
29 void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
30
31 protected:
32 FixedSizeSecBlock<word32, 33*4> m_key;
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 };
40
41 class CRYPTOPP_NO_VTABLE Dec : public Base
42 {
43 public:
44 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
45 };
46
47 public:
48 typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
49 typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
50 };
51
52 typedef Serpent::Encryption SerpentEncryption;
53 typedef Serpent::Decryption SerpentDecryption;
54
55 NAMESPACE_END
56
57 #endif
BlockCipherDocumentation
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher...
Definition: seckey.h:398
Serpent
Serpent block cipher.
Definition: serpent.h:24
BlockCipher
Interface for one direction (encryption or decryption) of a block cipher.
Definition: cryptlib.h:1250
secblock.h
Classes and functions for secure memory allocations.
FixedBlockSize
Inherited by algorithms with fixed block size.
Definition: seckey.h:40
seckey.h
Classes and functions for implementing secret key algorithms.
BlockCipherFinal< ENCRYPTION, Enc >
FixedSizeSecBlock< word32, 33 *4 >
FixedRounds
Inherited by algorithms with fixed number of rounds.
Definition: seckey.h:52
VariableKeyLength
Inherited by keyed algorithms with variable key length.
Definition: seckey.h:165
Serpent_Info
Serpent block cipher information.
Definition: serpent.h:16
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