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
|
/* This program uses the obsolete function 'setkey_r', which sets a key for
DES encryption. */
#define _GNU_SOURCE 1
#include <crypt.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
/* The prototype of 'setkey_r' may already have been removed from
crypt.h. */
extern void setkey_r(const char *, struct crypt_data *);
/* It may already not be possible to link new programs that use
'setkey_r' without special magic. */
#ifdef SYMVER
__asm__ (".symver setkey_r, setkey_r@" SYMVER);
#endif
/* setkey_r uses a 1-bit-per-byte representation of a DES key.
Yes, really. */
const char key[64] = {
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
};
int
main(void)
{
struct crypt_data data;
memset(&data, 0, sizeof data);
/* The primary effects of calling 'setkey_r' are only visible by
calling 'encrypt_r', and we don't want to call 'encrypt_r' in
this program because we want to make sure Lintian detects
programs that call 'setkey_r' but not 'encrypt_r', even though
that doesn't make a whole lot of sense. So we just call it and
then check whether it changed errno, which is the documented
way to check whether it failed. */
errno = 0;
setkey_r(key, &data);
if (errno) {
perror("setkey_r");
}
return 0;
}
|
