Anonymization in Web Auctions Using Zero-Knowledge Proof in Blockchain Technology

Authors

  • Wiktor Bohdan Daszczuk Warsaw University of Technology, Institute of Computer Science
  • Marlena Broniszewska Warsaw University of Technology, Department of Electronics and Information Technology
  • Denny Czejdo Fayetteville State University, Department of Mathematics and Computer Science https://orcid.org/0000-0001-7567-5705

Abstract

Global digitalization has accelerated, leading to continuous online shopping and services growth. However, the centralized nature of traditional e-commerce platforms raises concerns about data control, privacy, and potential single points of failure. Blockchain technology offers a decentralized alternative that addresses these issues, improving online transactions with enhanced privacy and anonymity for users. This article explores the problem of anonymization in web services by developing an anonymous online auction system using blockchain and zero-knowledge proof (ZKP). We propose a solution that employs ZKP in two stages: first, to verify that a user is eligible to participate in the auction, thereby creating a list of potential bidders; second, to prove that a bid is placed by a user from this list without disclosing their identity. This approach allows participants to engage in auctions anonymously, protecting their interests from competitors and sellers. The system eliminates the need for a trusted third party by leveraging the blockchain immutable ledger for transparency, giving users full control over their data and participation. We present the architecture and implementation details of the system, demonstrating its feasibility and potential to enhance privacy and security in online auctions.

Author Biographies

Wiktor Bohdan Daszczuk, Warsaw University of Technology, Institute of Computer Science

Wiktor B. Daszczuk was born in Olsztyn, Poland, in 1958. Joint Eng. and M.S. degree in computer science and technology from Warsaw University of Technology, Warsaw, Poland, 1982 Ph.D. in computer science from Warsaw University of Technology, Warsaw, Poland, 2003 D.Sc in computer science from Warsaw University of Technology, Warsaw, Poland, 2020 1982 to 1990 in the industry 1990 to 2003 - Research Assistant with the Institute of Computer Science, Warsaw University of Technology 2003 to now - Assistant Professor in t Institute of Computer Science, Warsaw University of Technology

Research interest includes the specification and verification of distributed systems and modeling of urban transport systems. Author of more than 70 publications, including a monograph, articles, conference papers and research reports. He leaded the development of PowerWatch plant monitoring system, Feniks simulator of autonomous transport systems, and Dedan verification environment. Dr. Daszczuk received Siemens Prize for Applied Research concerning PowerWatch system in 1997 and Polish Prime Minister Award for Scientific Research in Eco-Mobility project in 2016

Marlena Broniszewska, Warsaw University of Technology, Department of Electronics and Information Technology

MSc student, Warsaw University of Technology, Department of Electronics and Information Technology

Denny Czejdo, Fayetteville State University, Department of Mathematics and Computer Science

Professor of Science, Fayetteville State University, Department of Mathematics and Computer Science

Additional Files

Published

2025-05-30

Issue

Vol. 71 No. 2 (2025)

Section

Cryptography and Cybersecurity

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Copyright (c) 2025 International Journal of Electronics and Telecommunication

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