Application of a secure data transmission with an effective timing algorithm based on LoRa modulation and chaos

• Published in: Microprocessors and microsystems 2023-06, Vol.99, p.104829, Article 104829
• Main Authors: Erkan, Emre, Oğraş, Hidayet, Fidan, Şehmus
• Format: Article
• Language: English
• Subjects: Chaos; Communication; LoRa modulation; Secure transmission
• ISSN: 0141-9331; 1872-9436
• DOI: 10.1016/j.micpro.2023.104829

•A real-time application for secure data transmission using a different approach.•The receiver system requires a confirmation signal to perform necessary action.•Utilizing chaos dynamics for generating secret codes used in the algorithm.•The transmitted data can be a simple bit or any multimedia data of major systems. In today's technology, remote control or access is widely used in many platforms. However, the fact that remotely controlled platforms are open to external attacks or not secure enough which can have serious negative consequences. In this paper, a real-time LoRa modulation based data transmission application is achieved. The security of remotely transmitted data is not only provided with a basic encryption structure, but also a confirmation signal based transceiver system is designed in which the required process is performed only with a certain time interval. Firstly, the data to be transmitted is mixed with a secret key using XOR operation then transmitter creates a random period of time that specifies how long after the confirmation signal will be sent relative to the data signal. Hence, the entire system security is enhanced by the timing algorithm running with millisecond precision between the transceiver circuits. Encryption of the confirmation signal in a similar structure as the data signal improves security of the entire system. In this application, a PWM signal containing voltage information has been successfully transmitted in ciphered form using LoRa modulation. The designed algorithm for the receiver and transmitter circuits has been tested and verified in real time application. Experimental results show that the proposed scheme can be applied to any application-based communication system.