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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 <fcall.h>
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#include <thread.h>
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#include <9p.h>
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#include <auth.h>
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#include <authsrv.h>
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#include <libsec.h>
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#include "netssh.h"
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Cipher *cryptos[1];
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int debug;
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void
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usage(void)
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{
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	fprint(2, "usage: %s [file]\n", argv0);
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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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	Packet *p;
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	char *ep, *np, *user;
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	mpint *e, *n;
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	int fd, m;
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	char key[Maxrpcbuf], encpub[Maxrpcbuf];
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	ARGBEGIN {
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	default:
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		usage();
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	} ARGEND
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	if (argc > 1)
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		usage();
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	user = getenv("user");
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	if (argc == 0)
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		fd = 0;
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	else {
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		fd = open(argv[0], OREAD);
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		if (fd < 0)
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			usage();
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	}
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	m = read(fd, key, Maxrpcbuf - 1);
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	close(fd);
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	key[m >= 0? m: 0] = 0;
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	ep = strstr(key, " ek=");
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	np = strstr(key, " n=");
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	if (ep == nil || np == nil)
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		sysfatal("bad key file\n");
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	e = strtomp(ep+4, nil, 16, nil);
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	n = strtomp(np+3, nil, 16, nil);
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	p = new_packet(nil);
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	add_string(p, "ssh-rsa");
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	add_mp(p, e);
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	add_mp(p, n);
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	if ((m = enc64(encpub, Maxrpcbuf, p->payload, p->rlength-1)) < 0)
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		sysfatal("base-64 encoding failed\n");
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	print("ssh-rsa ");
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	write(1, encpub, m);
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	if (user)
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		print(" %s\n", user);
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}