wpa_passphrase.c
Go to the documentation of this file.
00001 /*
00002  * WPA Supplicant - ASCII passphrase to WPA PSK tool
00003  * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License version 2 as
00007  * published by the Free Software Foundation.
00008  *
00009  * Alternatively, this software may be distributed under the terms of BSD
00010  * license.
00011  *
00012  * See README and COPYING for more details.
00013  */
00014 
00015 #include "includes.h"
00016 
00017 #include "common.h"
00018 #include "crypto/sha1.h"
00019 
00020 
00021 int main(int argc, char *argv[])
00022 {
00023         unsigned char psk[32];
00024         int i;
00025         char *ssid, *passphrase, buf[64], *pos;
00026 
00027         if (argc < 2) {
00028                 printf("usage: wpa_passphrase <ssid> [passphrase]\n"
00029                         "\nIf passphrase is left out, it will be read from "
00030                         "stdin\n");
00031                 return 1;
00032         }
00033 
00034         ssid = argv[1];
00035 
00036         if (argc > 2) {
00037                 passphrase = argv[2];
00038         } else {
00039                 printf("# reading passphrase from stdin\n");
00040                 if (fgets(buf, sizeof(buf), stdin) == NULL) {
00041                         printf("Failed to read passphrase\n");
00042                         return 1;
00043                 }
00044                 buf[sizeof(buf) - 1] = '\0';
00045                 pos = buf;
00046                 while (*pos != '\0') {
00047                         if (*pos == '\r' || *pos == '\n') {
00048                                 *pos = '\0';
00049                                 break;
00050                         }
00051                         pos++;
00052                 }
00053                 passphrase = buf;
00054         }
00055 
00056         if (os_strlen(passphrase) < 8 || os_strlen(passphrase) > 63) {
00057                 printf("Passphrase must be 8..63 characters\n");
00058                 return 1;
00059         }
00060 
00061         pbkdf2_sha1(passphrase, ssid, os_strlen(ssid), 4096, psk, 32);
00062 
00063         printf("network={\n");
00064         printf("\tssid=\"%s\"\n", ssid);
00065         printf("\t#psk=\"%s\"\n", passphrase);
00066         printf("\tpsk=");
00067         for (i = 0; i < 32; i++)
00068                 printf("%02x", psk[i]);
00069         printf("\n");
00070         printf("}\n");
00071 
00072         return 0;
00073 }


wpa_supplicant_node
Author(s): Package maintained by Blaise Gassend
autogenerated on Thu Jan 2 2014 11:25:15