1 #include <u.h>
2 #include <libc.h>
3 #include <mp.h>
4 #include <libsec.h>
5
6 void
usage(void)7 usage(void)
8 {
9 fprint(2, "usage: auth/rsagen [-b bits] [-t 'attr=value attr=value ...']\n");
10 exits("usage");
11 }
12
13 void
main(int argc,char ** argv)14 main(int argc, char **argv)
15 {
16 char *s;
17 int bits;
18 char *tag;
19 RSApriv *key;
20
21 bits = 1024;
22 tag = nil;
23 key = nil;
24 fmtinstall('B', mpfmt);
25
26 ARGBEGIN{
27 case 'b':
28 bits = atoi(EARGF(usage()));
29 if(bits == 0)
30 usage();
31 break;
32 case 't':
33 tag = EARGF(usage());
34 break;
35 default:
36 usage();
37 }ARGEND
38
39 if(argc != 0)
40 usage();
41
42 do{
43 if(key)
44 rsaprivfree(key);
45 key = rsagen(bits, 6, 0);
46 }while(mpsignif(key->pub.n) != bits);
47
48 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",
49 tag ? tag : "", tag ? " " : "",
50 mpsignif(key->pub.n), key->pub.ek,
51 key->dk, key->pub.n, key->p, key->q,
52 key->kp, key->kq, key->c2);
53 if(s == nil)
54 sysfatal("smprint: %r");
55
56 if(write(1, s, strlen(s)) != strlen(s))
57 sysfatal("write: %r");
58
59 exits(nil);
60 }
61