40a5e3bfde
nfc_pw_token can be used to build random NFC password token for WPS. This tool prints out the wpa_supplicant.conf (or hostapd.conf) parameters and the hexdump of the WPS password token (with and without NDEF encapsulation) so that it can be written to a NFC tag with an external program. Signed-hostap: Jouni Malinen <j@w1.fi>
83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
/*
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* nfc_pw_token - Tool for building NFC password tokens for WPS
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* Copyright (c) 2012, 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 "utils/common.h"
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#include "crypto/random.h"
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#include "wpa_supplicant_i.h"
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#include "config.h"
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#include "wps_supplicant.h"
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static void print_bin(const char *title, const struct wpabuf *buf)
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{
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size_t i, len;
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const u8 *pos;
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if (buf == NULL)
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return;
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printf("%s=", title);
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pos = wpabuf_head(buf);
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len = wpabuf_len(buf);
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for (i = 0; i < len; i++)
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printf("%02X", *pos++);
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printf("\n");
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}
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int main(int argc, char *argv[])
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{
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struct wpa_supplicant wpa_s;
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int ret = -1;
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struct wpabuf *buf = NULL, *ndef = NULL;
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char txt[1000];
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if (os_program_init())
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return -1;
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random_init(NULL);
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os_memset(&wpa_s, 0, sizeof(wpa_s));
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wpa_s.conf = os_zalloc(sizeof(*wpa_s.conf));
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if (wpa_s.conf == NULL)
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goto fail;
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buf = wpas_wps_nfc_token(&wpa_s, 0);
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if (buf == NULL)
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goto fail;
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ndef = ndef_build_wifi(buf);
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if (ndef == NULL)
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goto fail;
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wpa_snprintf_hex_uppercase(txt, sizeof(txt), wpabuf_head(buf),
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wpabuf_len(buf));
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printf("#WPS=%s\n", txt);
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wpa_snprintf_hex_uppercase(txt, sizeof(txt), wpabuf_head(ndef),
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wpabuf_len(ndef));
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printf("#NDEF=%s\n", txt);
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printf("wps_nfc_dev_pw_id=%d\n", wpa_s.conf->wps_nfc_dev_pw_id);
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print_bin("wps_nfc_dh_pubkey", wpa_s.conf->wps_nfc_dh_pubkey);
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print_bin("wps_nfc_dh_privkey", wpa_s.conf->wps_nfc_dh_privkey);
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print_bin("wps_nfc_dev_pw", wpa_s.conf->wps_nfc_dev_pw);
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ret = 0;
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fail:
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wpabuf_free(ndef);
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wpabuf_free(buf);
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wpa_config_free(wpa_s.conf);
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random_deinit();
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os_program_deinit();
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return ret;
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}
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