mirror of
https://github.com/vanhoefm/fragattacks.git
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5ec3d510e1
Reject a passphrase with control characters instead of trying to write out an example network configuration block with such control characters included. Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
/*
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* WPA Supplicant - ASCII passphrase to WPA PSK tool
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* Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "crypto/sha1.h"
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int main(int argc, char *argv[])
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{
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unsigned char psk[32];
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int i;
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char *ssid, *passphrase, buf[64], *pos;
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size_t len;
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if (argc < 2) {
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printf("usage: wpa_passphrase <ssid> [passphrase]\n"
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"\nIf passphrase is left out, it will be read from "
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"stdin\n");
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return 1;
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}
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ssid = argv[1];
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if (argc > 2) {
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passphrase = argv[2];
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} else {
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printf("# reading passphrase from stdin\n");
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if (fgets(buf, sizeof(buf), stdin) == NULL) {
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printf("Failed to read passphrase\n");
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return 1;
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}
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buf[sizeof(buf) - 1] = '\0';
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pos = buf;
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while (*pos != '\0') {
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if (*pos == '\r' || *pos == '\n') {
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*pos = '\0';
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break;
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}
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pos++;
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}
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passphrase = buf;
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}
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len = os_strlen(passphrase);
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if (len < 8 || len > 63) {
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printf("Passphrase must be 8..63 characters\n");
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return 1;
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}
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if (has_ctrl_char((u8 *) passphrase, len)) {
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printf("Invalid passphrase character\n");
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return 1;
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}
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pbkdf2_sha1(passphrase, (u8 *) ssid, os_strlen(ssid), 4096, psk, 32);
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printf("network={\n");
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printf("\tssid=\"%s\"\n", ssid);
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printf("\t#psk=\"%s\"\n", passphrase);
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printf("\tpsk=");
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for (i = 0; i < 32; i++)
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printf("%02x", psk[i]);
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printf("\n");
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printf("}\n");
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return 0;
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}
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