Benchmarking and Integration of NIST Post-Quantum Cryptography on Android Devices

In recent years, there has been spontaneous development in practical quantum computing. This poses a serious risk to today’s cryptographic infrastructure, especially on mobile platforms. To address this, new Post Quantum Cryptographic algorithms which are safe to quantum computing have been created. In this paper, we explored the real-world deployment plausibility of NIST-standard post-quantum algorithms in mobile platforms, namely CRYSTALS-Kyber, CRYSTALS-Dilithium, FALCON, and SPHINCS+, and found them to perform well within deployment requirements with respect to execution time and CPU utilization. Along with the testing, the paper also explores practical optimization techniques, such as native code offloading via NDK, asynchronous processing, idle-time batching, to be used alongside the algorithms for improved latency and lower energy consumption. The paper deployed these algorithms in two prototype applications, one using an end-to-end encryption app that com-bines symmetric AES encryption with PQ key encapsulation, and an application for encrypting files on the device with quantum algorithms. The paper proposes guidelines and a roadmap for developers and researchers aiming to create a secure environment on mobile devices against quantum threats.