blob: db0c20317d913e032c260454149528de59ddbd55 (
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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* utils.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: charles <me@cacharle.xyz> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/08/01 15:00:16 by charles #+# #+# */
/* Updated: 2020/08/03 12:57:25 by charles ### ########.fr */
/* */
/* ************************************************************************** */
#include "ft_ssl.h"
#define HEX_CHARS "0123456789abcdef"
uint32_t rotate_left(uint32_t x, int s)
{
return (x << s) | (x >> (32 - s));
}
uint32_t rotate_right(uint32_t x, int s)
{
return (x >> s) | (x << (32 - s));
}
char *bytes_to_str(uint8_t *bytes, size_t size)
{
char *ret;
size_t i;
if ((ret = ft_strnew(size * 2)) == NULL)
return (NULL);
i = 0;
while (i < size)
{
ret[i * 2 + 0] = HEX_CHARS[(bytes[i] & 0xf0) >> 4];
ret[i * 2 + 1] = HEX_CHARS[(bytes[i] & 0x0f) >> 0];
i++;
}
return (ret);
}
uint32_t reverse_bytes32(uint32_t x)
{
return (
(x & 0x000000ffu) << 24 |
(x & 0x0000ff00u) << 8 |
(x & 0x00ff0000u) >> 8 |
(x & 0xff000000u) >> 24
);
}
/*
** from: <byteswap.h>
*/
uint64_t reverse_bytes64(uint64_t x)
{
return (
(x & 0x00000000000000ffull) << 56 |
(x & 0x000000000000ff00ull) << 40 |
(x & 0x0000000000ff0000ull) << 24 |
(x & 0x00000000ff000000ull) << 8 |
(x & 0x000000ff00000000ull) >> 8 |
(x & 0x0000ff0000000000ull) >> 24 |
(x & 0x00ff000000000000ull) >> 40 |
(x & 0xff00000000000000ull) >> 56
);
}
|
