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/* $OpenBSD: wpa-psk.c,v 1.3 2008/07/22 07:37:25 djm Exp $ */
/*-
* Copyright (c) 2008 Damien Bergamini <damien.bergamini@free.fr>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <net80211/ieee80211.h>
#include <crypto/sha1.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <err.h>
#include "pbkdf2.h"
int
main(int argc, char **argv)
{
extern char *__progname;
const char *pass, *ssid;
u_int len, ssid_len;
u_int8_t keybuf[32];
int i;
if (argc != 3) {
(void)fprintf(stderr, "usage: %s <ssid> <passphrase>\n",
__progname);
exit(1);
}
ssid = argv[1];
pass = argv[2];
/* validate passphrase */
len = strlen(pass);
if (len < 8 || len > 63)
errx(1, "passphrase must be between 8 and 63 characters");
/* validate SSID */
ssid_len = strlen(ssid);
if (ssid_len == 0)
errx(1, "invalid SSID");
if (ssid_len > IEEE80211_NWID_LEN) {
ssid_len = IEEE80211_NWID_LEN;
warnx("truncating SSID to its first %d characters", ssid_len);
}
pkcs5_pbkdf2(pass, len, ssid, ssid_len, keybuf, sizeof(keybuf), 4096);
printf("0x");
for (i = 0; i < 32; i++)
printf("%02x", keybuf[i]);
printf("\n");
return 0;
}
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