jehanne/sys/src/cmd/auth/rsagen.c

73 lines
1.6 KiB
C

/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
/* Portions of this file are Copyright (C) 9front's team.
* See /doc/license/9front-mit for details about the licensing.
* See http://git.9front.org/plan9front/plan9front/HEAD/info.html for a list of authors.
*/
#include <u.h>
#include <lib9.h>
#include <mp.h>
#include <libsec.h>
void
usage(void)
{
fprint(2, "usage: auth/rsagen [-b bits] [-t 'attr=value attr=value ...']\n");
exits("usage");
}
void
main(int argc, char **argv)
{
char *s;
int bits;
char *tag;
RSApriv *key;
bits = 2048;
tag = nil;
key = nil;
fmtinstall('B', mpfmt);
ARGBEGIN{
case 'b':
bits = atoi(EARGF(usage()));
if(bits == 0)
usage();
break;
case 't':
tag = EARGF(usage());
break;
default:
usage();
}ARGEND
if(argc != 0)
usage();
do{
if(key)
rsaprivfree(key);
key = rsagen(bits, 6, 0);
}while(mpsignif(key->pub.n) != bits);
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",
tag ? tag : "", tag ? " " : "",
mpsignif(key->pub.n), key->pub.ek,
key->dk, key->pub.n, key->p, key->q,
key->kp, key->kq, key->c2);
if(s == nil)
sysfatal("smprint: %r");
if(jehanne_write(1, s, strlen(s)) != strlen(s))
sysfatal("write: %r");
exits(nil);
}