#include <u.h>#include <libc.h>#include <auth.h>#include <mp.h>#include <libsec.h>#include "rsa2any.h" voidusage(void){	fprint(2, "usage: auth/rsa2pub [file]\n");	exits("usage");} voidmain(int argc, char **argv){	RSApriv *key;	Attr *a;	char *s; 	fmtinstall('A', _attrfmt);	fmtinstall('B', mpfmt);	quotefmtinstall(); 	ARGBEGIN{	default:		usage();	}ARGEND 	if(argc > 1)		usage(); 	if((key = getkey(argc, argv, 0, &a)) == nil)		sysfatal("%r"); 	s = smprint("key %A size=%d ek=%B n=%B\n",		a, 		mpsignif(key->pub.n), key->pub.ek, key->pub.n);	if(s == nil)		sysfatal("smprint: %r");	write(1, s, strlen(s));	exits(nil);}