TOTP

2024-05-24 22:05:42 +02:00
parent 79febfd14e
commit 69679dfeca
23 changed files with 1522 additions and 232 deletions
--- a/lib/Arduino-TOTP-RFC6238-generator/examples/RFC6238-generator/RFC6238-generator.ino
+++ b/lib/Arduino-TOTP-RFC6238-generator/examples/RFC6238-generator/RFC6238-generator.ino
@@ -0,0 +1,100 @@
+/* Copyright (c) Dirk-Willem van Gulik, All rights reserved.
+ *  
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * 
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <WiFi.h>
+#include <ESPmDNS.h>
+#include <ArduinoOTA.h>
+#include <WebServer.h>
+#include <lwip/apps/sntp.h>
+
+#include <TOTP-generator.hpp>
+
+#ifndef WIFI_NETWORK
+#define WIFI_NETWORK "mySecretWiFiPassword"
+#warning "You propably want to change this line!"
+#endif
+
+#ifndef WIFI_PASSWD
+#define WIFI_PASSWD "mySecretWiFiPassword"
+#warning "You propably want to change this line!"
+#endif
+
+#ifndef NTP_SERVER
+#define NTP_SERVER "nl.pool.ntp.org"
+#warning "You MUST set an appropriate ntp pool - see http://ntp.org"
+#endif
+
+#ifndef NTP_DEFAULT_TZ
+#define NTP_DEFAULT_TZ "CET-1CEST,M3.5.0,M10.5.0/3"
+#endif
+
+const char* ssid = WIFI_NETWORK;
+const char* password = WIFI_PASSWD;
+
+void setup() {
+  Serial.begin(115200);
+  while (!Serial) delay(10);
+
+  Serial.println("\n\n" __FILE__ "Started");
+
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, password);
+  if (WiFi.waitForConnectResult() != WL_CONNECTED) {
+    Serial.println("WiFi Connect Failed! Rebooting...");
+    delay(1000);
+    ESP.restart();
+  }
+
+  // we need a reasonable accurate time for TOTP to work.
+  //
+  configTzTime(NTP_DEFAULT_TZ, NTP_SERVER);
+}
+
+
+void loop() {
+  // Print the one time passcode every seconds;
+  //
+  static unsigned long lst = millis();
+  if (millis() - lst < 1000)
+    return;
+  lst = millis();
+
+  time_t t = time(NULL);
+  if (t < 1000000) {
+    Serial.println("Not having a stable time yet.. TOTP is not going to work.");
+    return;
+  };
+
+  // Seed value - as per the QR code; which is in fact a base32 encoded
+  // byte array (i.e. it is binary).
+  //
+  const char * seed = "ORUGKU3FMNZGK5CTMVSWI===";
+
+  // Example of the same thing - but as usually formatted when shown
+  // as the 'alternative text to enter'
+  //
+  // const char * seed = "ORU GKU 3FM NZG K5C TMV SWI";
+
+  String * otp = TOTP::currentOTP(seed);
+
+  Serial.print(ctime(&t));
+  Serial.print("   TOTP at this time is: ");
+  Serial.println(*otp);
+  Serial.println();
+
+  delete otp;
+}
+