Post-Quantum Cryptography - Benchmarking for a Quantum Secure Future

Khanim Avsuvarova

Saoud AlAbdulla, Mustafa Al Samara, Okba Ben Atia +2 more

Johannes A Buchmann, Denis Butin, Florian Göpfert +1 more

Prasanna Ravi, Vijaya Kumar Sundar, Anupam Chattopadhyay +2 more

Ensuring communication security in real-time automotive networks is of paramount importance given the sensitivity of the exchanged information and highly safety critical nature of its operation. The first step towards ensuring security is to securely authenticate all the computational nodes through use of authentication protocols based on public-key cryptography. But, traditional public-key cryptographic primitives we use today are believed to be breakable by large scale quantum computers of the future. Thus, NIST is currently running a global global level standardization process for quantum-resistant public-key cryptography, better known as post-quantum cryptography. In this work, we perform a first of its kind practical implementation of a secure authentication protocol for automotive systems with post-quantum cryptographic algorithms and perform a detailed comparative evaluation of the speed and communication bandwidth performance against their pre-quantum counterparts.

Alisha Fatima, Lavanya Satyawali, Ravikant Kumar Nirala

Quantum computing poses a serious threat to traditional cryptography, with algorithms like RSA and ECC being vulnerable to attacks such as Shor’s algorithm. To address this, we propose a Post-Quantum Secure Chat Application using lattice-based cryptography, specifically CRYSTALS-Kyber for key exchange and CRYSTALS-Dilithium for digital signatures. The system provides end-to-end encryption with forward secrecy, ensuring message confidentiality, authenticity, and integrity. Mathematical formulations of key encapsulation, encryption, and signature verification are presented, alongside performance benchmarks. Experimental results show that the application achieves practical latency and throughput on real devices while resisting quantum attacks. This work demonstrates that integrating post-quantum algorithms into messaging platforms is both feasible and essential for secure future communication.

Syed Ismail Abdul Lathif, Priya Saxena, Priyanshi Singh