Using Esch256 Algorithm of the Sparkle Permutation Family to Enhance the Security of ESP-NOW Communication for Smart Lock Systems

The smart lock system enables users to lock and unlock doors using electronic devices. However, ensuring security in data transmission between electronic devices is a major concern in developing this system. The Esch256 cryptographic algorithm of the Sparkle permutation family is utilized to enhance the security of data transmission in the smart lock system through ESP-NOW communication protocol. This research conducts tests on the software level of the smart lock system that employs the ESP-NOW protocol with Esch256 algorithm, especially regarding its data transmission. From the research conducted, it was obtained that the average time spent to run the entire system was 1.556 seconds. The results of this study demonstrate that the utilization of the Esch256 algorithm can reliably enhance the security of data transmission in the smart lock system through ESP-NOW communication implemented on constrained devices.