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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 | * | |
0f3d578e JM |
5 | * This software may be distributed under the terms of the BSD license. |
6 | * See README for more details. | |
6fc6879b JM |
7 | */ |
8 | ||
9 | #include "includes.h" | |
10 | ||
11 | #include "common.h" | |
03da66bd | 12 | #include "crypto/sha1.h" |
6fc6879b JM |
13 | |
14 | ||
15 | int main(int argc, char *argv[]) | |
16 | { | |
17 | unsigned char psk[32]; | |
18 | int i; | |
19 | char *ssid, *passphrase, buf[64], *pos; | |
20 | ||
21 | if (argc < 2) { | |
22 | printf("usage: wpa_passphrase <ssid> [passphrase]\n" | |
23 | "\nIf passphrase is left out, it will be read from " | |
24 | "stdin\n"); | |
25 | return 1; | |
26 | } | |
27 | ||
28 | ssid = argv[1]; | |
29 | ||
30 | if (argc > 2) { | |
31 | passphrase = argv[2]; | |
32 | } else { | |
33 | printf("# reading passphrase from stdin\n"); | |
34 | if (fgets(buf, sizeof(buf), stdin) == NULL) { | |
35 | printf("Failed to read passphrase\n"); | |
36 | return 1; | |
37 | } | |
38 | buf[sizeof(buf) - 1] = '\0'; | |
39 | pos = buf; | |
40 | while (*pos != '\0') { | |
41 | if (*pos == '\r' || *pos == '\n') { | |
42 | *pos = '\0'; | |
43 | break; | |
44 | } | |
45 | pos++; | |
46 | } | |
47 | passphrase = buf; | |
48 | } | |
49 | ||
50 | if (os_strlen(passphrase) < 8 || os_strlen(passphrase) > 63) { | |
51 | printf("Passphrase must be 8..63 characters\n"); | |
52 | return 1; | |
53 | } | |
54 | ||
986de33d | 55 | pbkdf2_sha1(passphrase, (u8 *) ssid, os_strlen(ssid), 4096, psk, 32); |
6fc6879b JM |
56 | |
57 | printf("network={\n"); | |
58 | printf("\tssid=\"%s\"\n", ssid); | |
59 | printf("\t#psk=\"%s\"\n", passphrase); | |
60 | printf("\tpsk="); | |
61 | for (i = 0; i < 32; i++) | |
62 | printf("%02x", psk[i]); | |
63 | printf("\n"); | |
64 | printf("}\n"); | |
65 | ||
66 | return 0; | |
67 | } |