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6fc6879b JM |
1 | /* |
2 | * WPA Supplicant - ASCII passphrase to WPA PSK tool | |
3 | * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * Alternatively, this software may be distributed under the terms of BSD | |
10 | * license. | |
11 | * | |
12 | * See README and COPYING for more details. | |
13 | */ | |
14 | ||
15 | #include "includes.h" | |
16 | ||
17 | #include "common.h" | |
03da66bd | 18 | #include "crypto/sha1.h" |
6fc6879b JM |
19 | |
20 | ||
21 | int main(int argc, char *argv[]) | |
22 | { | |
23 | unsigned char psk[32]; | |
24 | int i; | |
25 | char *ssid, *passphrase, buf[64], *pos; | |
26 | ||
27 | if (argc < 2) { | |
28 | printf("usage: wpa_passphrase <ssid> [passphrase]\n" | |
29 | "\nIf passphrase is left out, it will be read from " | |
30 | "stdin\n"); | |
31 | return 1; | |
32 | } | |
33 | ||
34 | ssid = argv[1]; | |
35 | ||
36 | if (argc > 2) { | |
37 | passphrase = argv[2]; | |
38 | } else { | |
39 | printf("# reading passphrase from stdin\n"); | |
40 | if (fgets(buf, sizeof(buf), stdin) == NULL) { | |
41 | printf("Failed to read passphrase\n"); | |
42 | return 1; | |
43 | } | |
44 | buf[sizeof(buf) - 1] = '\0'; | |
45 | pos = buf; | |
46 | while (*pos != '\0') { | |
47 | if (*pos == '\r' || *pos == '\n') { | |
48 | *pos = '\0'; | |
49 | break; | |
50 | } | |
51 | pos++; | |
52 | } | |
53 | passphrase = buf; | |
54 | } | |
55 | ||
56 | if (os_strlen(passphrase) < 8 || os_strlen(passphrase) > 63) { | |
57 | printf("Passphrase must be 8..63 characters\n"); | |
58 | return 1; | |
59 | } | |
60 | ||
61 | pbkdf2_sha1(passphrase, 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 | } |