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WebSVN – planix.SVN – Blame – /os/branches/feature_fixcpp/sys/src/cmd/auth/rsagen.c – Rev 2

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#include <u.h>
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#include <libc.h>
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#include <mp.h>
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#include <libsec.h>
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void
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usage(void)
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{
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	fprint(2, "usage: auth/rsagen [-b bits] [-t 'attr=value attr=value ...']\n");
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	exits("usage");
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}
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void
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main(int argc, char **argv)
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{
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	char *s;
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	int bits;
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	char *tag;
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	RSApriv *key;
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	bits = 1024;
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	tag = nil;
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	key = nil;
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	fmtinstall('B', mpfmt);
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	ARGBEGIN{
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	case 'b':
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		bits = atoi(EARGF(usage()));
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		if(bits == 0)
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			usage();
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		break;
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	case 't':
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		tag = EARGF(usage());
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		break;
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	default:
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		usage();
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	}ARGEND
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	if(argc != 0)
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		usage();
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	do{
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		if(key)
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			rsaprivfree(key);
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		key = rsagen(bits, 6, 0);
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	}while(mpsignif(key->pub.n) != bits);
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	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",
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		tag ? tag : "", tag ? " " : "",
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		mpsignif(key->pub.n), key->pub.ek,
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		key->dk, key->pub.n, key->p, key->q,
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		key->kp, key->kq, key->c2);
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	if(s == nil)
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		sysfatal("smprint: %r");
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	if(write(1, s, strlen(s)) != strlen(s))
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		sysfatal("write: %r");
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	exits(nil);
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}