부산대학교 도서관

Interconnected devices have been with us for a long time. The security of the data exchanged through these devices is a matter of grave concern. While exchanging information, a secure network creates trust among parties participating in e-commerce. Lightweight cryptography deals with algorithms specially designed for providing security to resource-constrained devices. This paper represents a scheme to encrypt files in an energy-efficient manner as suited for the Internet of Things (IoT) environment. Among various block ciphers and stream ciphers available; modified lightweight block cipher GIFT is tested. As per the proposed scheme a modified version of GIFT with bit-slice substitution and involutive permutation is used for data encryption. Encryption and related simulation are carried out using MATLAB tool. Some of the famous lightweight algorithms like GIFT-KSA, GIFT-COFB, PRESENT, PRESENT-KSA, SIMON, and SKINNY are used for comparison based on the state-of-the-art parameters like computation time, power, energy, latency, throughput, and software efficiency. One of the applications in the IoT environment is demonstrated for better understanding. Modified GIFT stands out to be a super-efficient solution for providing security for various IoT applications.