Blockchain-Enabled Secure E-Voting Using Wallet-Based Voter Authentication and Smart Contracts

Abstract: This paper presents a comprehensive analysis of blockchain-enabled electronic voting systems, focusing on how decentralization, smart contracts, and advanced cryptographic techniques can enhance trust, security, and transparency in modern elections. By examining key research contributions-including Ethereum-based protocols like Ques-Chain, decentralized systems such as the Open Vote Network, permissioned blockchain evaluations using Hyperledger Fabric, and cutting-edge privacy solutions employing zero-knowledge proofs and zk-SNARKs-the work highlights both the promise and limitations of blockchain as an e-voting foundation. The study explains how wallet-based voter authentication, Merkle tree validation, and self-tallying mechanisms can enforce one-time voting, preserve voter anonymity, and eliminate reliance on central authorities. At the same time, the analysis acknowledges persistent challenges: scalability constraints, governance complexities, and the critical vulnerability posed by insecure end-user devices. The paper concludes that while blockchain provides a mathematically robust and auditable architecture for secure e-voting, achieving a truly trustless, large-scale national implementation requires addressing real-world security issues, performance bottlenecks, and user-centric barriers that remain unresolved today.

Keywords: Blockchain, E-Voting, Smart Contracts, Zero-Knowledge Proofs, zk-SNARKs, Merkle Tree, Wallet-Based Authentication, Decentralization, Cryptographic Voting, Hyperledger Fabric, Election Security, Self-Tallying Protocols1. Introduction: The Imperative for Secure E-Voting in the Digital Age