1 #include <u.h>
2 #include <libc.h>
3 #include <auth.h>
4 #include <mp.h>
5 #include <libsec.h>
6 #include "rsa2any.h"
7 
8 void
9 usage(void)
10 {
11 	fprint(2, "usage: auth/rsa2pub [file]\n");
12 	exits("usage");
13 }
14 
15 void
16 main(int argc, char **argv)
17 {
18 	RSApriv *key;
19 	Attr *a;
20 	char *s;
21 
22 	fmtinstall('A', _attrfmt);
23 	fmtinstall('B', mpfmt);
24 	quotefmtinstall();
25 
26 	ARGBEGIN{
27 	default:
28 		usage();
29 	}ARGEND
30 
31 	if(argc > 1)
32 		usage();
33 
34 	if((key = getkey(argc, argv, 0, &a)) == nil)
35 		sysfatal("%r");
36 
37 	s = smprint("key %A size=%d ek=%lB n=%lB\n",
38 		a,
39 		mpsignif(key->pub.n), key->pub.ek, key->pub.n);
40 	if(s == nil)
41 		sysfatal("smprint: %r");
42 	write(1, s, strlen(s));
43 	exits(nil);
44 }