blob: 01674535565aae5e1b129771ddeca155590dacfb (
plain)
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
|
/*
* Salsa20 / XSalsa20
* (C) 1999-2010 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_SALSA20_H__
#define BOTAN_SALSA20_H__
#include <botan/stream_cipher.h>
namespace Botan {
/*
* Salsa20 (and XSalsa20)
*/
class BOTAN_DLL Salsa20 : public StreamCipher
{
public:
void cipher(const byte in[], byte out[], u32bit length);
void set_iv(const byte iv[], u32bit iv_len);
bool valid_iv_length(u32bit iv_len) const
{ return (iv_len == 8 || iv_len == 24); }
void clear();
std::string name() const;
StreamCipher* clone() const { return new Salsa20; }
Salsa20();
~Salsa20() { clear(); }
private:
void key_schedule(const byte key[], u32bit key_len);
SecureBuffer<u32bit, 16> state;
SecureBuffer<byte, 64> buffer;
u32bit position;
};
}
#endif
|
