1/*
2 * WPA Supplicant - ASCII passphrase to WPA PSK tool
3 * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#include "includes.h"
10
11#include "common.h"
12#include "crypto/sha1.h"
13
14
15int main(int argc, char *argv[])
16{
17	unsigned char psk[32];
18	int i;
19	char *ssid, *passphrase, buf[64], *pos;
20	size_t len;
21
22	if (argc < 2) {
23		printf("usage: wpa_passphrase <ssid> [passphrase]\n"
24			"\nIf passphrase is left out, it will be read from "
25			"stdin\n");
26		return 1;
27	}
28
29	ssid = argv[1];
30
31	if (argc > 2) {
32		passphrase = argv[2];
33	} else {
34		printf("# reading passphrase from stdin\n");
35		if (fgets(buf, sizeof(buf), stdin) == NULL) {
36			printf("Failed to read passphrase\n");
37			return 1;
38		}
39		buf[sizeof(buf) - 1] = '\0';
40		pos = buf;
41		while (*pos != '\0') {
42			if (*pos == '\r' || *pos == '\n') {
43				*pos = '\0';
44				break;
45			}
46			pos++;
47		}
48		passphrase = buf;
49	}
50
51	len = os_strlen(passphrase);
52	if (len < 8 || len > 63) {
53		printf("Passphrase must be 8..63 characters\n");
54		return 1;
55	}
56	if (has_ctrl_char((u8 *) passphrase, len)) {
57		printf("Invalid passphrase character\n");
58		return 1;
59	}
60
61	pbkdf2_sha1(passphrase, (u8 *) ssid, os_strlen(ssid), 4096, psk, 32);
62
63	printf("network={\n");
64	printf("\tssid=\"%s\"\n", ssid);
65	printf("\t#psk=\"%s\"\n", passphrase);
66	printf("\tpsk=");
67	for (i = 0; i < 32; i++)
68		printf("%02x", psk[i]);
69	printf("\n");
70	printf("}\n");
71
72	return 0;
73}
74