Post-Quantum and Lightweight Cryptographic Solutions for Mobile Data Security in Cloud Systems

Abstract

Traditional cryptographic techniques are under threat with the advent of quantum computing. Hence, there is a dire need for post-quantum cryptography (PQC) solutions to ensure the security of cloud-based mobile data. However, lightweight cryptography (LWC) is essential in finding a balance between security and performance because of the limited processing resources of mobile devices. This paper proposes a hybrid cryptographic technique that combines LWC for optimal performance in resource-constrained mobile cloud environments with PQC for quantum resistance. Using a simulation cloud implementation, the approach involves performance
benchmarking, security evaluation, and algorithm choice. Quantitative indicators are evaluated, including overhead on data transmission, latency for generating keys, encryption time, and decryption time. Experiments that compare the proposed method with existing cryptographic methods show the desired method does indeed guarantee the efficiency of security preservation without losing computational viability. The hybrid PQC-LWC architecture, according to the findings, is a feasible solution for the future safe mobile apps based in the cloud as it significantly strengthens the security against quantum threats by the mobile clouds without imposing much computing load on the system