1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
/*
* Blowfish
* (C) 1999-2011 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_BLOWFISH_H__
#define BOTAN_BLOWFISH_H__
#include <botan/block_cipher.h>
namespace Botan {
/**
* Blowfish
*/
class BOTAN_DLL Blowfish final : public Block_Cipher_Fixed_Params<8, 1, 56>
{
public:
void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
/**
* Modified EKSBlowfish key schedule, used for bcrypt password hashing
*/
void eks_key_schedule(const uint8_t key[], size_t key_length,
const uint8_t salt[16], size_t workfactor);
void clear() override;
std::string name() const override { return "Blowfish"; }
BlockCipher* clone() const override { return new Blowfish; }
private:
void key_schedule(const uint8_t key[], size_t length) override;
void key_expansion(const uint8_t key[],
size_t key_length,
const uint8_t salt[16]);
void generate_sbox(secure_vector<uint32_t>& box,
uint32_t& L, uint32_t& R,
const uint8_t salt[16],
size_t salt_off) const;
secure_vector<uint32_t> m_S, m_P;
};
}
#endif
|
