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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; | |
5ec3d510 | 20 | size_t len; |
6fc6879b JM |
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 { | |
32289112 | 34 | fprintf(stderr, "# reading passphrase from stdin\n"); |
6fc6879b | 35 | if (fgets(buf, sizeof(buf), stdin) == NULL) { |
32289112 | 36 | fprintf(stderr, "Failed to read passphrase\n"); |
6fc6879b JM |
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 | ||
5ec3d510 JM |
51 | len = os_strlen(passphrase); |
52 | if (len < 8 || len > 63) { | |
32289112 | 53 | fprintf(stderr, "Passphrase must be 8..63 characters\n"); |
6fc6879b JM |
54 | return 1; |
55 | } | |
5ec3d510 | 56 | if (has_ctrl_char((u8 *) passphrase, len)) { |
32289112 | 57 | fprintf(stderr, "Invalid passphrase character\n"); |
5ec3d510 JM |
58 | return 1; |
59 | } | |
6fc6879b | 60 | |
986de33d | 61 | pbkdf2_sha1(passphrase, (u8 *) ssid, os_strlen(ssid), 4096, psk, 32); |
6fc6879b JM |
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 | } |