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Encrypted P2P Communication using LoRa waves
  • Sanjay G K
Sanjay G K

Corresponding Author:[email protected]

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Study exploring the urban world deployment of LoRa waves using the ESP32  microcontroller
Secure communication over large distances is not possible with conventional Wifi or cellular networks. A long range secure communication model is required for such conditions. This paper puts forth a communication model suitable for information exchange over a such large distances. LoRa (Long Range) is a spread spectrum modulation technique derived from chirp spread spectrum (CSS) technology. The typical range provided by LoRa can be up to three miles (5km) in urban areas, and up to 10 miles (15 km) or more in rural areas of line of sight. LoRa’s high range is characterized by high wireless link budgets of around 155 dB to 170 dB. ESP32 is a series of low-cost, low-power system on chip microcontrollers. The LoRa modem is available as the SX127X module which is connected to the ESP32 boards. Data security is ensured by performing data encryption on the sender board and data decryption on the reciever board. The algorithms for encryption and decryption shown in this article is the AES method. This paper also explores the possibility of hijacking the data while transmitting and shows which algorithms are immune to attacks and which can be easily broken. The use cases for such a communication system could be for secure 2-way communication, communication in remote areas where cellular and Wifi are not available, effecient control of IOT devices over a much larger distance, control of unmanned ground and aerial vehicles, etc.