Crypto++ 8.1 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
24 class Square : public Square_Info, public BlockCipherDocumentation
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:
54 typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
55 typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
56 };
57
58 typedef Square::Encryption SquareEncryption;
59 typedef Square::Decryption SquareDecryption;
60
61 NAMESPACE_END
62
63 #endif
FixedKeyLength
Inherited by keyed algorithms with fixed key length.
Definition: seckey.h:124
BlockCipherDocumentation
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher...
Definition: seckey.h:398
Square
Square block cipher.
Definition: square.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, 4 *(ROUNDS+1)>
FixedRounds
Inherited by algorithms with fixed number of rounds.
Definition: seckey.h:52
Square_Info
Square block cipher information.
Definition: square.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