blob: 8237f57c09d63b12fe01a2b390c80b7e61950fdd (
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
|
/*************************************************
* SHA1PRNG RNG Header File *
* (C) 2007 FlexSecure GmbH / Manuel Hartl *
* (C) 2008 Jack Lloyd *
*************************************************/
#ifndef BOTAN_SHA1PRNG_H__
#define BOTAN_SHA1PRNG_H__
#include <botan/rng.h>
#include <botan/base.h>
namespace Botan {
/*************************************************
* SHA1PRNG *
*************************************************/
class SHA1PRNG : public RandomNumberGenerator
{
public:
void randomize(byte[], u32bit) throw(PRNG_Unseeded);
bool is_seeded() const;
void clear() throw();
std::string name() const;
SHA1PRNG(RandomNumberGenerator* = 0);
~SHA1PRNG();
private:
void add_randomness(const byte[], u32bit);
void update_state(byte[]);
RandomNumberGenerator* prng;
HashFunction* hash;
SecureVector<byte> buffer;
SecureVector<byte> state;
int buf_pos;
};
}
#endif
|
