A Quantum-Secure and Blockchain-Integrated E-Voting Framework with Identity Validation

TL;DR

This paper presents a quantum-secure, blockchain-based e-voting system that uses biometric authentication and post-quantum cryptography to ensure voter identity, data integrity, and system security against quantum threats.

Contribution

It introduces a novel post-quantum-secure e-voting framework integrating biometric verification, Falcon signatures, and blockchain for tamper-proof vote recording, enhancing security and transparency.

Findings

Achieves low biometric spoofing error rates (ACER < 3.5%)

Maintains minimal blockchain gas costs (~3.3%) for registration

Demonstrates scalability and robustness under concurrent loads

Abstract

The rapid growth of quantum computing poses a threat to the cryptographic foundations of digital systems, requiring the development of secure and scalable electronic voting (evoting) frameworks. We introduce a post-quantum-secure evoting architecture that integrates Falcon lattice-based digital signatures, biometric authentication via MobileNetV3 and AdaFace, and a permissioned blockchain for tamper-proof vote storage. Voter registration involves capturing facial embeddings, which are digitally signed using Falcon and stored on-chain to ensure integrity and non-repudiation. During voting, real-time biometric verification is performed using anti-spoofing techniques and cosine-similarity matching. The system demonstrates low latency and robust spoof detection, monitored through Prometheus and Grafana for real-time auditing. The average classification error rates (ACER) are below 3.5% on the CelebA Spoof dataset and under 8.2% on the Wild Face Anti-Spoofing (WFAS) dataset. Blockchain anchoring incurs minimal gas overhead, approximately 3.3% for registration and 0.15% for voting, supporting system efficiency, auditability, and transparency. The experimental results confirm the system's scalability, efficiency, and resilience under concurrent loads. This approach offers a unified solution to address key challenges in voter authentication, data integrity, and quantum-resilient security for digital systems.