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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
// Copyright (C) 2010-2014 David Sugar, Tycho Softworks.
// Copyright (C) 2015-2020 Cherokees of Idaho.
//
// This file is part of GNU uCommon C++.
//
// GNU uCommon C++ is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU uCommon C++ is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with GNU uCommon C++. If not, see <http://www.gnu.org/licenses/>.
#include "local.h"
#ifndef _MSWINDOWS_
#include <fcntl.h>
#endif
namespace ucommon {
void Random::seed(void)
{
secure::init();
RAND_poll();
}
bool Random::seed(const uint8_t *buf, size_t size)
{
secure::init();
RAND_seed(buf, (int)size);
return true;
}
size_t Random::key(uint8_t *buf, size_t size)
{
secure::init();
if(RAND_bytes(buf, (int)size))
return size;
return 0;
}
size_t Random::fill(uint8_t *buf, size_t size)
{
#ifdef _MSWINDOWS_
return key(buf, size);
#else
int fd = open("/dev/urandom", O_RDONLY);
ssize_t result = 0;
if(fd > -1) {
result = read(fd, buf, size);
close(fd);
}
// ugly...would not trust it
else {
result = 0;
while(result++ < (ssize_t)size)
*(buf++) = rand() & 0xff;
}
if(result < 0)
result = 0;
return (size_t)result;
#endif
}
bool Random::status(void)
{
if(RAND_status())
return true;
return false;
}
} // namespace ucommon
|
