更新硬件SDK

sdk/Arduino/FastBeeArduino/Auth.cpp

@@ -0,0 +1,156 @@
+/*********************************************************************
+ * function： 设备认证
+ * board:     esp8266 core for arduino v3.0.2
+ * library：  PubSubClient2.8.0  & ArduinoJson6.19.1 & OneButton2.0.4
+ * source:    https://gitee.com/kerwincui/wumei-smart
+ * copyright: FastBee and kerwincui all rights reserved.
+ ********************************************************************/
+
+#include "Auth.h"
+
+/*
+ * 连接MQTT，加密认证
+ */
+void connectMqtt() {
+  printMsg("连接Mqtt服务器...");
+  mqttClient.setClient(wifiClient);
+  mqttClient.setServer(mqttHost, mqttPort);
+  mqttClient.setBufferSize(1024);
+  mqttClient.setKeepAlive(5);
+  // 设置Mqtt回调函数
+  mqttClient.setCallback(mqttCallback);
+
+  // 生成mqtt加密密码
+  String aesPassword = generationAESPwd();
+  // 连接 设备mqtt客户端Id格式为：认证类型(E=加密、S=简单) & 设备编号 & 产品ID & 用户ID
+  String clientId = "E&" + (String)deviceNum + "&" + (String)productId + "&" + (String)userId;
+  printMsg("客户端ID：" + clientId);
+  bool connectResult = mqttClient.connect(clientId.c_str(), mqttUserName, aesPassword.c_str());
+  if (connectResult) {
+    printMsg("连接Mqtt成功");
+    // 订阅系统主题
+    subscribeTopic();
+    // 发布设备信息,设备上电都需要发布一次
+    publishInfo();
+  } else {
+    printMsg("连接失败, rc=");
+    Serial.print(mqttClient.state());
+  }
+}
+
+/*
+ * 生成加密密码
+ */
+String generationAESPwd() {
+  // 获取NTP时间
+  String jsonTime = getTime();
+  StaticJsonDocument<128> doc;
+  DeserializationError error = deserializeJson(doc, jsonTime);
+  if (error) {
+    printMsg("Json解析失败：");
+    Serial.print(error.f_str());
+    return "";
+  }
+  // 获取NTP时间=（设备发送消息时间 + 服务器接收消息时间 + 服务器发送消息时间 - 设备接收时间 最后除于2 ）
+  float deviceSendTime = doc["deviceSendTime"];
+  float serverSendTime = doc["serverSendTime"];
+  float serverRecvTime = doc["serverRecvTime"];
+  float deviceRecvTime = millis();
+  float now = (serverSendTime + serverRecvTime + deviceRecvTime - deviceSendTime) / 2;
+  // 过期时间 = 当前时间 + 1小时
+  float expireTime = now + 1 * 60 * 60 * 1000;
+  // 加密认证，密码格式为：mqtt密码 & 过期时间 & 授权码（可选），如果产品启用了授权码就必须加上
+  String password = "";
+  if (authCode == "") {
+    password = (String)mqttPwd + "&" + String(expireTime, 0);
+  } else {
+    password = (String)mqttPwd + "&" + String(expireTime, 0) + "&" + authCode;
+  }
+  // 密码加密
+  printMsg("密码(未加密):" + password);
+  String encryptPassword = encrypt(password, mqttSecret, wumei_iv);
+  printMsg("密码(已加密)：" + encryptPassword);
+  return encryptPassword;
+}
+
+/*
+ * 通过HTTP获取NTP时间
+ */
+String getTime() {
+  while (WiFi.status() == WL_CONNECTED) {
+    HTTPClient http;
+    printMsg("获取时间...");
+    if (http.begin(wifiClient, (ntpServer + (String)millis()).c_str())) {
+      // 发送请求
+      int httpCode = http.GET();
+      if (httpCode > 0) {
+        if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
+          printMsg("获取时间成功，data:");
+          Serial.print(http.getString());
+          return http.getString();
+        }
+      } else {
+        printMsg("获取时间失败，error:");
+        Serial.printf(http.errorToString(httpCode).c_str());
+      }
+      http.end();
+    } else {
+      printMsg("连接Http失败");
+    }
+    delay(500);
+  }
+  return "1672524366000";
+}
+
+/*
+ * AES加密 (AES-CBC-128-pkcs5padding)
+ */
+String encrypt(String plain_data, char *wumei_key, char *wumei_iv) {
+  int i;
+  // pkcs7padding填充 Block Size : 16
+  int len = plain_data.length();
+  int n_blocks = len / 16 + 1;
+  uint8_t n_padding = n_blocks * 16 - len;
+  uint8_t data[n_blocks * 16];
+  memcpy(data, plain_data.c_str(), len);
+  for (i = len; i < n_blocks * 16; i++) {
+    data[i] = n_padding;
+  }
+  uint8_t key[16], iv[16];
+  memcpy(key, wumei_key, 16);
+  memcpy(iv, wumei_iv, 16);
+  // 加密
+  br_aes_big_cbcenc_keys encCtx;
+  br_aes_big_cbcenc_init(&encCtx, key, 16);
+  br_aes_big_cbcenc_run(&encCtx, iv, data, n_blocks * 16);
+  // Base64编码
+  len = n_blocks * 16;
+  char encoded_data[base64_enc_len(len)];
+  base64_encode(encoded_data, (char *)data, len);
+  return String(encoded_data);
+}
+
+/*
+ * AES解密 (AES-CBC-128-pkcs5padding)
+ */
+String decrypt(String encoded_data_str, char *wumei_key, char *wumei_iv) {
+  int input_len = encoded_data_str.length();
+  char *encoded_data = const_cast<char *>(encoded_data_str.c_str());
+  int len = base64_dec_len(encoded_data, input_len);
+  uint8_t data[len];
+  base64_decode((char *)data, encoded_data, input_len);
+  uint8_t key[16], iv[16];
+  memcpy(key, wumei_key, 16);
+  memcpy(iv, wumei_iv, 16);
+  int n_blocks = len / 16;
+  br_aes_big_cbcdec_keys decCtx;
+  br_aes_big_cbcdec_init(&decCtx, key, 16);
+  br_aes_big_cbcdec_run(&decCtx, iv, data, n_blocks * 16);
+  // PKCS#7 Padding 填充
+  uint8_t n_padding = data[n_blocks * 16 - 1];
+  len = n_blocks * 16 - n_padding;
+  char plain_data[len + 1];
+  memcpy(plain_data, data, len);
+  plain_data[len] = '\0';
+  return String(plain_data);
+}