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
|
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <mp.h>
#include <libsec.h>
void
usage(void)
{
fprint(2, "auth/asn12rsa [-t tag] [file]\n");
exits("usage");
}
void
main(int argc, char **argv)
{
char *s;
uchar *buf;
int fd;
long n, tot;
char *tag, *file;
RSApriv *key;
fmtinstall('B', mpfmt);
tag = nil;
ARGBEGIN{
case 't':
tag = EARGF(usage());
break;
default:
usage();
}ARGEND
if(argc != 0 && argc != 1)
usage();
if(argc == 1)
file = argv[0];
else
file = "/dev/stdin";
if((fd = open(file, OREAD)) < 0)
sysfatal("open %s: %r", file);
buf = nil;
tot = 0;
for(;;){
buf = realloc(buf, tot+8192);
if(buf == nil)
sysfatal("realloc: %r");
if((n = read(fd, buf+tot, 8192)) < 0)
sysfatal("read: %r");
if(n == 0)
break;
tot += n;
}
key = asn1toRSApriv(buf, tot);
if(key == nil)
sysfatal("couldn't parse asn1 key");
s = smprint("key proto=rsa %s%ssize=%d ek=%B !dk=%B n=%B !p=%B !q=%B !kp=%B !kq=%B !c2=%B\n",
tag ? tag : "", tag ? " " : "",
mpsignif(key->pub.n), key->pub.ek,
key->dk, key->pub.n, key->p, key->q,
key->kp, key->kq, key->c2);
if(s == nil)
sysfatal("smprint: %r");
write(1, s, strlen(s));
exits(0);
}
|