A SECURE AND SCALABLE DIGITAL SIGNATURE PROTOCOL FOR IOT APPLICATIONS

Abstract

Despite the enormous potential of the Internet of Things (IoT) in the diverse spheres, the communication infrastructure is flawed from the security standpoint and inclines to loss of privacy for end-users. Many security algorithms have been explored for providing secure communication, but battery-operated smart devices can support only the lightweight oper­ations. This work aims to introduce a lightweight security protocol for resource-constrained settings, leveraging complex numbers derived from small primes in a defined range to compute signature parameters, enhanced by SHA-1 for improved resilience. The probability of sharing a key between devices could be increased by suitably selecting the prime number range. The connectivity and resilience against node capture are evaluated to know the performance of the algorithm.