Post Quantum Public Key Infrastructure for Quantum Resilient Banking Security

Abstract

The recent development in Quantum Computing is creating a potential threat to many Digital Banking Systems currently being used today. Most banking systems today use Classical Public Key Cryptography technologies like RSA and Elliptical Curve Cryptography that will be broken by a very powerful, large-scale Quantum Computer. Because financial data typically has to be kept private for an extended time period, this problem creates a major long-term risk.

This research proposes a Hybrid Post-Quantum Public Key Infrastructure (PKI) Framework for the improvement of banking security while maintaining compatibility with the existing banking systems. Rather than immediately replacing all classical cryptographic mechanisms, the Hybrid Post-Quantum Solution utilizes a combination of post-quantum algorithms along with traditional techniques. The proposed Hybrid Post-Quantum PKI model provides a reasonable and scalable path for banks to transition their systems from current quantum-vulnerable security infrastructures to new quantum-resilient security infrastructures.