1 /* 2 * nfc_pw_token - Tool for building NFC password tokens for WPS 3 * Copyright (c) 2012, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "utils/common.h" 12 #include "crypto/random.h" 13 #include "wpa_supplicant_i.h" 14 #include "config.h" 15 #include "wps_supplicant.h" 16 17 18 static void print_bin(const char *title, const struct wpabuf *buf) 19 { 20 size_t i, len; 21 const u8 *pos; 22 23 if (buf == NULL) 24 return; 25 26 printf("%s=", title); 27 28 pos = wpabuf_head(buf); 29 len = wpabuf_len(buf); 30 for (i = 0; i < len; i++) 31 printf("%02X", *pos++); 32 33 printf("\n"); 34 } 35 36 37 int main(int argc, char *argv[]) 38 { 39 struct wpa_supplicant wpa_s; 40 int ret = -1; 41 struct wpabuf *buf = NULL, *ndef = NULL; 42 char txt[1000]; 43 44 if (os_program_init()) 45 return -1; 46 random_init(NULL); 47 48 os_memset(&wpa_s, 0, sizeof(wpa_s)); 49 wpa_s.conf = os_zalloc(sizeof(*wpa_s.conf)); 50 if (wpa_s.conf == NULL) 51 goto fail; 52 53 buf = wpas_wps_nfc_token(&wpa_s, 0); 54 if (buf == NULL) 55 goto fail; 56 57 ndef = ndef_build_wifi(buf); 58 if (ndef == NULL) 59 goto fail; 60 61 wpa_snprintf_hex_uppercase(txt, sizeof(txt), wpabuf_head(buf), 62 wpabuf_len(buf)); 63 printf("#WPS=%s\n", txt); 64 65 wpa_snprintf_hex_uppercase(txt, sizeof(txt), wpabuf_head(ndef), 66 wpabuf_len(ndef)); 67 printf("#NDEF=%s\n", txt); 68 69 printf("wps_nfc_dev_pw_id=%d\n", wpa_s.conf->wps_nfc_dev_pw_id); 70 print_bin("wps_nfc_dh_pubkey", wpa_s.conf->wps_nfc_dh_pubkey); 71 print_bin("wps_nfc_dh_privkey", wpa_s.conf->wps_nfc_dh_privkey); 72 print_bin("wps_nfc_dev_pw", wpa_s.conf->wps_nfc_dev_pw); 73 74 ret = 0; 75 fail: 76 wpabuf_free(ndef); 77 wpabuf_free(buf); 78 wpa_config_free(wpa_s.conf); 79 random_deinit(); 80 os_program_deinit(); 81 82 return ret; 83 } 84
