Blockchain-Based Distributed Electronic Voting System Ensuring Privacy and Integrity through Smart Contracts

Abstract

Traditional voting systems face significant challenges, including susceptibility to fraud, lack of transparency, and privacy concerns. Centralized electronic voting systems, while improving accessibility, often suffer from vulnerabilities such as tampering, single points of failure, and insufficient auditability. This project proposes a blockchain-based distributed electronic voting system that leverages smart contracts to ensure voter privacy, ballot integrity, and decentralized verification. The system employs cryptographic techniques such as zero-knowledge proofs (ZKPs) to anonymize voter identities while maintaining a verifiable audit trail on an immutable blockchain ledger. Smart contracts automate vote tallying, enforce voting rules (e.g., eligibility checks, one-vote-per- voter), and ensure tamper-proof execution of electoral processes. A permissioned blockchain network enhances scalability and reduces energy consumption compared to public blockchains. The system also incorporates multi-factor voter authentication and end- to-end encryption to safeguard against unauthorized access. By decentralizing control and enabling real-time transparency, this solution addresses critical flaws in existing systems, reduces electoral fraud, and strengthens public trust in democratic processes. The proposed architecture is implemented using Hyperledger Fabric for blockchain operations and Ethereum-based smart contracts, ensuring high performance, security, and compliance with electoral regulations.