Crypto++ 8.9 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
BlockCipherFinal< ENCRYPTION, Enc >
BlockCipher
Interface for one direction (encryption or decryption) of a block cipher.
Definition: cryptlib.h:1288
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
FixedKeyLength
Inherited by keyed algorithms with fixed key length.
Definition: seckey.h:125
FixedRounds
Inherited by algorithms with fixed number of rounds.
Definition: seckey.h:53
FixedRounds< 8 >::ROUNDS
static const int ROUNDS
The number of rounds for the algorithm provided as a constant.
Definition: seckey.h:56
FixedSizeSecBlock
Fixed size stack-based SecBlock.
Definition: secblock.h:1246
NameValuePairs
Interface for retrieving values given their names.
Definition: cryptlib.h:327
Square
Square block cipher.
Definition: square.h:25
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
Square_Info
Square block cipher information.
Definition: square.h:17