Botan 1.10.17

twofish.h
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1 /*
2 * Twofish
3 * (C) 1999-2007 Jack Lloyd
4 *
5 * Distributed under the terms of the Botan license
6 */
7
8 #ifndef BOTAN_TWOFISH_H__
9 #define BOTAN_TWOFISH_H__
10
11 #include <botan/block_cipher.h>
12
13 namespace Botan {
14
15 /**
16 * Twofish, an AES finalist
17 */
18 class BOTAN_DLL Twofish : public Block_Cipher_Fixed_Params<16, 16, 32, 8>
19 {
20 public:
21 void encrypt_n(const byte in[], byte out[], size_t blocks) const;
22 void decrypt_n(const byte in[], byte out[], size_t blocks) const;
23
24 void clear();
25 std::string name() const { return "Twofish"; }
26 BlockCipher* clone() const { return new Twofish; }
27
28 Twofish() : SB(1024), RK(40) {}
29 private:
30 void key_schedule(const byte[], size_t);
31
32 static void rs_mul(byte[4], byte, size_t);
33
34 static const u32bit MDS0[256];
35 static const u32bit MDS1[256];
36 static const u32bit MDS2[256];
37 static const u32bit MDS3[256];
38 static const byte Q0[256];
39 static const byte Q1[256];
40 static const byte RS[32];
41 static const byte EXP_TO_POLY[255];
42 static const byte POLY_TO_EXP[255];
43
44 SecureVector<u32bit> SB, RK;
45 };
46
47 }
48
49 #endif
Botan::Twofish::Twofish
Twofish()
Definition: twofish.h:28
Botan::byte
unsigned char byte
Definition: types.h:22
Botan::Twofish
Definition: twofish.h:18
Botan::Twofish::name
std::string name() const
Definition: twofish.h:25
Botan::Twofish::clone
BlockCipher * clone() const
Definition: twofish.h:26
Botan
Definition: algo_base.h:14
Botan::SecureVector< u32bit >
Botan::Block_Cipher_Fixed_Params
Definition: block_cipher.h:104
Botan::u32bit
unsigned int u32bit
Definition: types.h:32
Botan::BlockCipher
Definition: block_cipher.h:18