An Ethereum Based Distributed Application for Ensuring the Integrity of Stored E-Voting Data

Abstract

E-Voting system generally adopts the client-server architecture where the server is the responsible entity of all data in the system. Such a system poses several issues regarding information security such as data integrity of the election result, the confidentiality of voter identity with its vote and the auditability of transactions. This research presents an implementation of blockchain-based Ethereum on the E-Voting system to protect the information security with a distributed storage. The e-Voting system is implemented with three main components: private blockchain network, smart contract, and web service as an interface to manager and voters. The functional evaluation on the data store, display, update, delete, verify voters, authenticate voters, and the integrity of the election process in the private blockchain network are all well-functioning, even without an overvote. The nonfunctional evaluation shows that the system can guarantee the data integrity of the election result, the confidentiality of voter identity with its selection, the auditability of transactions, and the maximum scale of load that system can handle. Based on these results, E-Voting system with a blockchain-based Ethereum give a better alternative than those implemented with a client-server architecture.