ESPNow: Encryption not working about pjon HOT 4 OPEN

void setup()
{
  Serial.begin(115200);
  Serial.println("Receiver started.");

  // Note PMK is 16 bytes, to store it in a char use char[17] or add an extra byte for the null terminator
  char pmk[17] = "\x2b\xb2\x1e\x7a\x83\x13\x76\x9f\xf8\xa9\x3b\x1b\x5b\x52\xd0\x70";

  bus.strategy.set_channel(6);
  bus.strategy.set_pmk(pmk);

  bus.set_receiver(receiver_function);
  bus.begin();
};

void setup()
{
  Serial.begin(115200);
  Serial.println("Transmitter started.");

  // Note PMK is 16 bytes, to store it in a char use char[17] or add an extra byte for the null terminator
  char pmk[17] = "\x2b\xb2\x1e\x7a\x83\x13\x76\x9f\xf8\xa9\x3b\x1b\x5b\x52\xd0\x70";

  bus.strategy.set_channel(6);
  bus.strategy.set_pmk(pmk);

  bus.set_receiver(receiver_function);
  bus.begin();
  bus.send_repeatedly(44, "P", 1, 100000); // Send P to device 44 10 times per second
};

  // Note PMK is 16 bytes, to store it in a char use char[17] or add an extra byte for the null terminator
  char pmk[17] = "\x2b\xb2\x1e\x7a\x83\x13\x76\x9f\xf8\xa9\x3b\x1b\x5b\x52\xd0\x70";

  bus.strategy.set_autoregistration(false);
  bus.strategy.set_channel(6);
  bus.strategy.set_pmk(pmk);

  bus.set_receiver(receiver_function);
  bus.begin();

  uint8_t dev_mac[6] = { 0x10, 0x10, 0x10, 0x10, 0x10, 0x11 };  // MAC address of the remote node.
  bus.strategy.add_node(44, dev_mac);

  bus.send_repeatedly(44, "P", 1, 100000); // Send P to device 44 10 times per second

/* ESPNOW can work in both station and softap mode.
   It is configured in menuconfig. */
#if CONFIG_STATION_MODE
  #define ESPNOW_WIFI_MODE WIFI_MODE_STA
  #define ESPNOW_WIFI_IF ESP_IF_WIFI_STA
#else
  #define ESPNOW_WIFI_MODE WIFI_MODE_AP
  #define ESPNOW_WIFI_IF ESP_IF_WIFI_AP
#endif

  Serial.println("ESP Board MAC Address:  ");
  #if CONFIG_STATION_MODE
  WiFi.mode(WIFI_MODE_STA);
  Serial.print(" Station interface: ");
  Serial.println(WiFi.macAddress());
  #else
  WiFi.mode(WIFI_MODE_AP);
  Serial.print(" AP interface: ");
  Serial.println(WiFi.softAPmacAddress());
  #endif