Award Date
May 2025
Degree Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
Department
Computer Science
First Committee Member
Yoohwan Kim
Second Committee Member
Juyeon Jo
Third Committee Member
Laxmi Gewali
Fourth Committee Member
Zuobin Xiong
Fifth Committee Member
Tina Vo
Number of Pages
183
Abstract
In cybersecurity, sharing of cyber threat intelligence (CTI) plays a pivotal role in our collective defense against emerging threats. However, the current paradigm of CTI sharing is one that participants are reluctant to share due to serious concerns about privacy and the potential exposure of sensitive information.We provide a comprehensive look at the potential of blockchain technology in cybersecurity, highlighting its advantages in creating an immutable, transparent, and decentralized ledger for CTI sharing. We also explore the mechanism of decentralized identity (DID) and explain how ZKP can be used to verify the authenticity of shared data without compromising the anonymity of participants. We detail the architecture of the proposed scheme, describing the application of an interplanetary file system (IPFS) for decentralized data storage, a private blockchain for transaction management and verification, and Zero-knowledge proof (ZKP) for privacy certification. Through this research, we demonstrate that a blockchain-based CTI sharing scheme significantly mitigates privacy concerns, encourages greater participation, and improves the overall resilience of cyber defenses. This dissertation concludes with a discussion of the implications of these findings for future cybersecurity practices, potential challenges in adopting blockchain and DID, and directions for further research. This research contributes to the field of cybersecurity by facilitating a more collaborative and effective approach to counter cyber threats, and by providing a new solution for secure and anonymous CTI sharing.
Keywords
Anonymous Transactions; Blockchain Privacy; Circom; Ring Signatures; Zero-Knowledge Proofs; zk-SNARK
Disciplines
Computer Sciences
Degree Grantor
University of Nevada, Las Vegas
Language
English
Repository Citation
Park, Chol Hyun, "Anonymous Cyber Threat Intelligence Sharing on Blockchain" (2025). UNLV Theses, Dissertations, Professional Papers, and Capstones. 5316.
https://oasis.library.unlv.edu/thesesdissertations/5316
Rights
IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/