blob: 365a6d9ff66b5447ba5ca43ce4c67191e6339d0a (
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
46
47
48
|
/*
* WiderWake
* (C) 1999-2008 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_WIDER_WAKE_H__
#define BOTAN_WIDER_WAKE_H__
#include <botan/stream_cipher.h>
namespace Botan {
/**
* WiderWake4+1-BE
*
* Note: quite old and possibly not safe; use XSalsa20 or a block
* cipher in counter mode.
*/
class BOTAN_DLL WiderWake_41_BE : public StreamCipher
{
public:
void cipher(const byte[], byte[], u32bit);
void set_iv(const byte[], u32bit);
bool valid_iv_length(u32bit iv_len) const
{ return (iv_len == 8); }
void clear();
std::string name() const { return "WiderWake4+1-BE"; }
StreamCipher* clone() const { return new WiderWake_41_BE; }
WiderWake_41_BE() : StreamCipher(16, 16, 1) {}
private:
void key_schedule(const byte[], u32bit);
void generate(u32bit);
SecureVector<byte, DEFAULT_BUFFERSIZE> buffer;
SecureVector<u32bit, 256> T;
SecureVector<u32bit, 5> state;
SecureVector<u32bit, 4> t_key;
u32bit position;
};
}
#endif
|
