Anonymous Blockchain-based System for Consortium
This addresses the need for both cooperation and anonymity in blockchain systems for companies and organizations, though it appears incremental as it builds on existing cryptographic methods.
The paper tackles the problem of privacy leakage in blockchain transactions by proposing a Multi-center Anonymous Blockchain-based (MAB) system for consortiums, which achieves anonymity and decentralization through a modular design with cryptographic primitives, and formal analysis shows it is secure and efficient.
Blockchain brings various advantages to online transactions. However, the total transparency of these transactions may leakage users' sensitive information. Requirements on both cooperation and anonymity for companies/organizations become necessary. In this paper, we propose a Multi-center Anonymous Blockchain-based (MAB) system, with joint management for the consortium and privacy protection for the participants. To achieve that, we formalize the syntax used by the MAB system and present a general construction based on a modular design. By applying cryptographic primitives to each module, we instantiate our scheme with anonymity and decentralization. Furthermore, we carry out a comprehensive formal analysis of the proposed solution. The results demonstrate our constructed scheme is secure and efficient.