Esempi in C++ (Cpp) per dh5_init_fixed

Esempio n. 1

File: wps_attr_build.c Progetto: MindShow/amlogic_s905_kernel_merges

int wps_build_public_key(struct wps_data *wps, struct wpabuf *msg)
{
	struct wpabuf *pubkey;

	wpa_printf(MSG_DEBUG, "WPS:  * Public Key");
	wpabuf_free(wps->dh_privkey);
	if (wps->dev_pw_id != DEV_PW_DEFAULT && wps->wps->dh_privkey) {
		wpa_printf(MSG_DEBUG, "WPS: Using pre-configured DH keys");
		wps->dh_privkey = wpabuf_dup(wps->wps->dh_privkey);
		wps->dh_ctx = wps->wps->dh_ctx;
		wps->wps->dh_ctx = NULL;
		pubkey = wpabuf_dup(wps->wps->dh_pubkey);
#ifdef CONFIG_WPS_NFC
	} else if (wps->dev_pw_id >= 0x10 && wps->wps->ap &&
		   wps->dev_pw_id == wps->wps->ap_nfc_dev_pw_id) {
		wpa_printf(MSG_DEBUG, "WPS: Using NFC password token DH keys");
		wps->dh_privkey = wpabuf_dup(wps->wps->ap_nfc_dh_privkey);
		pubkey = wpabuf_dup(wps->wps->ap_nfc_dh_pubkey);
		wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, pubkey);
#endif /* CONFIG_WPS_NFC */
	} else {
		wpa_printf(MSG_DEBUG, "WPS: Generate new DH keys");
		wps->dh_privkey = NULL;
		dh5_free(wps->dh_ctx);
		wps->dh_ctx = dh5_init(&wps->dh_privkey, &pubkey);
		pubkey = wpabuf_zeropad(pubkey, 192);
	}
	if (wps->dh_ctx == NULL || wps->dh_privkey == NULL || pubkey == NULL) {
		wpa_printf(MSG_DEBUG, "WPS: Failed to initialize "
			   "Diffie-Hellman handshake");
		wpabuf_free(pubkey);
		return -1;
	}
	wpa_hexdump_buf_key(MSG_DEBUG, "WPS: DH Private Key", wps->dh_privkey);
	wpa_hexdump_buf(MSG_DEBUG, "WPS: DH own Public Key", pubkey);

	wpabuf_put_be16(msg, ATTR_PUBLIC_KEY);
	wpabuf_put_be16(msg, wpabuf_len(pubkey));
	wpabuf_put_buf(msg, pubkey);

	if (wps->registrar) {
		wpabuf_free(wps->dh_pubkey_r);
		wps->dh_pubkey_r = pubkey;
	} else {
		wpabuf_free(wps->dh_pubkey_e);
		wps->dh_pubkey_e = pubkey;
	}

	return 0;
}

Esempio n. 2

File: ap.c Progetto: cococorp/hostap-upstream

int wpas_ap_wps_add_nfc_pw(struct wpa_supplicant *wpa_s, u16 pw_id,
			   const struct wpabuf *pw, const u8 *pubkey_hash)
{
	struct hostapd_data *hapd;
	struct wps_context *wps;

	if (!wpa_s->ap_iface)
		return -1;
	hapd = wpa_s->ap_iface->bss[0];
	wps = hapd->wps;

	if (wpa_s->p2pdev->conf->wps_nfc_dh_pubkey == NULL ||
	    wpa_s->p2pdev->conf->wps_nfc_dh_privkey == NULL) {
		wpa_printf(MSG_DEBUG, "P2P: No NFC DH key known");
		return -1;
	}

	dh5_free(wps->dh_ctx);
	wpabuf_free(wps->dh_pubkey);
	wpabuf_free(wps->dh_privkey);
	wps->dh_privkey = wpabuf_dup(
		wpa_s->p2pdev->conf->wps_nfc_dh_privkey);
	wps->dh_pubkey = wpabuf_dup(
		wpa_s->p2pdev->conf->wps_nfc_dh_pubkey);
	if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
		wps->dh_ctx = NULL;
		wpabuf_free(wps->dh_pubkey);
		wps->dh_pubkey = NULL;
		wpabuf_free(wps->dh_privkey);
		wps->dh_privkey = NULL;
		return -1;
	}
	wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
	if (wps->dh_ctx == NULL)
		return -1;

	return wps_registrar_add_nfc_pw_token(hapd->wps->registrar, pubkey_hash,
					      pw_id,
					      pw ? wpabuf_head(pw) : NULL,
					      pw ? wpabuf_len(pw) : 0, 1);
}