1 #include <u.h>
2 #include <libc.h>
3 #include <mp.h>
4 #include <libsec.h>
5 
6 void
7 usage(void)
8 {
9 	fprint(2, "usage: auth/dsagen [-t 'attr=value attr=value ...']\n");
10 	exits("usage");
11 }
12 
13 void
14 main(int argc, char **argv)
15 {
16 	char *s;
17 	char *tag;
18 	DSApriv *key;
19 
20 	tag = nil;
21 	key = nil;
22 	fmtinstall('B', mpfmt);
23 
24 	ARGBEGIN{
25 	case 't':
26 		tag = EARGF(usage());
27 		break;
28 	default:
29 		usage();
30 	}ARGEND
31 
32 	if(argc != 0)
33 		usage();
34 
35 	key = dsagen(nil);
36 
37 	s = smprint("key proto=dsa %s%sp=%lB q=%lB alpha=%lB key=%lB !secret=%lB\n",
38 		tag ? tag : "", tag ? " " : "",
39 		key->pub.p, key->pub.q, key->pub.alpha, key->pub.key,
40 		key->secret);
41 	if(s == nil)
42 		sysfatal("smprint: %r");
43 
44 	if(write(1, s, strlen(s)) != strlen(s))
45 		sysfatal("write: %r");
46 
47 	exits(nil);
48 }