#include <u.h>#include <libc.h>#include <mp.h>#include <libsec.h> voidusage(void){	fprint(2, "usage: auth/dsagen [-t 'attr=value attr=value ...']\n");	exits("usage");} voidmain(int argc, char **argv){	char *s, *tag;	DSApriv *key; 	tag = nil;	fmtinstall('B', mpfmt); 	ARGBEGIN{	case 't':		tag = EARGF(usage());		break;	default:		usage();	}ARGEND 	if(argc != 0)		usage(); 	key = dsagen(nil); 	s = smprint("key proto=dsa %s%sp=%B q=%B alpha=%B key=%B !secret=%B\n",		tag ? tag : "", tag ? " " : "",		key->pub.p, key->pub.q, key->pub.alpha, key->pub.key,		key->secret);	if(s == nil)		sysfatal("smprint: %r"); 	if(write(1, s, strlen(s)) != strlen(s))		sysfatal("write: %r");		exits(nil);}