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Blockchain is a form of distributed ledger technology (DLT) where data is shared among users connected over the internet. Transactions are data state changes on the blockchain that are permanently recorded in a secure and transparent way…

Cryptography and Security · Computer Science 2021-06-18 Amirmohammad Pasdar , Zhongli Dong , Young Choon Lee

Voting is a very important issue which can be beneficial in term of choosing the right leader in an election. A good leader can bring prosperity to a country and also can lead the country in the right direction every time. However,…

Cryptography and Security · Computer Science 2019-10-31 Kazi Sadia , Md. Masuduzzaman , Rajib Kumar Paul , Anik Islam

This study presents a blockchain-based voting system aimed at enhancing election security, transparency, and integrity. Traditional voting methods face growing risks of tampering, making it crucial to explore innovative solutions. Our…

Cryptography and Security · Computer Science 2025-02-25 Suniti Chouhan , Gajanand Sharma

Blockchain technology ensures secure and trustworthy data flow between multiple participants on the chain, but interoperability of on-chain and off-chain data has always been a difficult problem that needs to be solved. To solve the problem…

Cryptography and Security · Computer Science 2024-11-19 Xueying Zeng , Youquan Xian , Chunpei Li , Zhengdong Hu , Aoxiang Zhou , Peng Liu

Blockchain based systems allow various kinds of financial transactions to be executed in a decentralized manner. However, these systems often rely on a trusted third party (oracle) to get correct information about the real-world events,…

Artificial Intelligence · Computer Science 2020-07-28 Naman Goel , Cyril van Schreven , Aris Filos-Ratsikas , Boi Faltings

The public blockchain was originally conceived to process monetary transactions in a peer-to-peer network while preventing double-spending. It has since been extended to numerous other applications including execution of programs that exist…

Cryptography and Security · Computer Science 2018-08-03 John Adler , Ryan Berryhill , Andreas Veneris , Zissis Poulos , Neil Veira , Anastasia Kastania

A decentralized online petition system enables individuals or groups to create, sign, and share petitions without a central authority. Using blockchain technology, these systems ensure the integrity and transparency of the petition process…

Cryptography and Security · Computer Science 2024-07-02 Jagdeep Kaur , Kevin Antony , Nikhil Pujar , Ankit Jha

The development of an electronic voting system that would replace traditional election procedures is a research topic of great interest for many years. Blockchain technology could provide some guarantees and fulfill strong requirements for…

Cryptography and Security · Computer Science 2023-07-21 Achilleas Spanos , Ioanna Kantzavelou

Casting a ballot from a phone or laptop sounds appealing, but only if voters can be confident their choice remains secret and results cannot be altered in the dark. This paper proposes a hybrid blockchain-based voting model that stores…

Cryptography and Security · Computer Science 2025-10-02 Yousef Tahboub , Anthony Revilla , Jaydon Lynch , Greg Floyd

Blockchain, Smart Contracts and Distributed Ledger Technology (DLT) are being touted to revolutionise digital services - through decentralisation. Cryptocurrencies, self-sovereign identities, decentralised certificate registries, and…

Computers and Society · Computer Science 2019-11-01 Joshua Ellul , Gordon Pace

Today's blockchain landscape is severely fragmented as more and more heterogeneous blockchain platforms have been developed in recent years. These blockchain platforms are not able to interact with each other or with the outside world since…

Cryptography and Security · Computer Science 2021-11-22 Michael Sober , Giulia Scaffino , Christof Spanring , Stefan Schulte

Ensuring ballot secrecy is critical for fair and trustworthy electronic voting systems, yet achieving strong secrecy guarantees in decentralized, large-scale elections remains challenging. This paper proposes the concept of collectively…

The limitation with smart contracts is that they cannot access external data which might be required to control the execution of business logic. Oracles can be used to provide external data to smart contracts. An oracle is an interface that…

Cryptography and Security · Computer Science 2020-07-16 Abdeljalil Beniiche

Within a modern democratic nation, elections play a significant role in the nation's functioning. However, with the existing infrastructure for conducting elections using Electronic Voting Systems (EVMs), many loopholes exist, which…

Cryptography and Security · Computer Science 2023-07-18 Arnab Mukherjee , Souvik Majumdar , Anup Kumar Kolya , Saborni Nandi

The blockchain oracle problem, which refers to the challenge of injecting reliable external data into decentralized systems, remains a fundamental limitation to the development of trustless applications. While recent years have seen a…

Cryptography and Security · Computer Science 2025-12-04 Giulio Caldarelli

The Bitcoin Network is a sophisticated accounting system that allows its underlying cryptocurrency to be trusted even in the absence of a reliable financial authority. Given its undeniable success, the technology, generally referred to as…

Cryptography and Security · Computer Science 2025-09-09 Giulio Caldarelli

Blockchain consensus, rooted in the principle ``don't trust, verify'', limits access to real-world data, which may be ambiguous or inaccessible to some participants. Oracles address this limitation by supplying data to blockchains, but…

Blockchain is a type of decentralized distributed database. Unlike traditional relational database management systems, it does not require management or maintenance by a third party. All data management and update processes are open and…

Cryptography and Security · Computer Science 2025-05-14 Jiaqi Huang , Yuanzheng Niu , Xiaoqi Li , Zongwei Li

This research study focuses primarily on Block-Chain-based voting systems, which facilitate participation in and administration of voting for voters, candidates, and officials. Because we used Block-Chain in the backend, which enables…

Machine Learning · Computer Science 2023-03-14 Jagbeer Singh , Utkarsh Rastogi , Yash Goel , Brijesh Gupta , Utkarsh

We propose a novel distributed integrity-preserving framework for storing trust information in crowdsourced IoT environments. The integrity and availability of the trust information is paramount to ensure accurate trust assessment. Our…

Cryptography and Security · Computer Science 2021-07-16 Mohammed Bahutair , Athman Bouguettaya
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