An Integrated System for Privacy-Preserving, and Auditable Transactions on Hyperledger Fabric

The Hong Kong University of Science and Technology
Department of Computer Science and Engineering


MPhil Thesis Defence


Title: "An Integrated System for Privacy-Preserving, and Auditable Transactions
on Hyperledger Fabric"

By

Mr. Tai Tak Martin YIP


Abstract:

The banking industry is considering adopting permissioned blockchain technology
to improve security and reconcile transactions efficiently. The financial
institutions are determined to demonstrate their compliance, but the banks are
reluctant to have the ledgers transparent to the auditor as it might leak
trading strategy. In this thesis, we provide an integrated system for
privacy-preserving, and auditable decentralized transaction system on
Hyperledger Fabric with zkLedger. Through literature review, prototype design,
and experimentation, the study identifies the challenges and bottlenecks in
implementing the zkLedger design on Hyperledger Fabric, particularly regarding
transaction security and concurrency. Two approaches are proposed as trade-offs
between security and efficiency: the first provides complete security
properties but requires serial transaction processing, while the second allows
concurrent transactions with delayed Proof of Assets, offering increased
practicality at the cost of reduced security. The research contributes to the
understanding of auditable privacy-preserving transactions on blockchain and
presents a novel approach to implementing zkLedger with enhanced concurrency,
improving the overall efficiency and scalability of the system.


Date:                   Friday, 8 December 2023

Time:                   11:00am - 1:00pm

Venue:                  Room 3494
                        lifts 25/26

Committee Members:      Dr. Dimitris Papadopoulos (Supervisor)
                        Prof. Cunsheng Ding (Chairperson)
                        Prof. Dimitris Papadias


**** ALL are Welcome ****