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
main(int argc,char * argv[])15 int 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 fprintf(stderr, "# reading passphrase from stdin\n");
35 if (fgets(buf, sizeof(buf), stdin) == NULL) {
36 fprintf(stderr, "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 fprintf(stderr, "Passphrase must be 8..63 characters\n");
54 return 1;
55 }
56 if (has_ctrl_char((u8 *) passphrase, len)) {
57 fprintf(stderr, "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
