Secure and Efficient Multi-Signature Schemes for Fabric: An Enterprise Blockchain Platform

TL;DR

This paper introduces two new multi-signature schemes, GMS and AGMS, that enhance security and efficiency for enterprise blockchain transactions, demonstrated through implementation in Hyperledger Fabric with promising results.

Contribution

The paper proposes two novel multi-signature schemes, GMS and AGMS, that outperform existing schemes in security and efficiency, and demonstrates their practical application in Hyperledger Fabric.

Findings

AGMS achieves high transaction efficiency

Proposed schemes are secure against rogue-key and k-sum attacks

Implementation in Fabric shows practical viability

Abstract

Digital signature is a major component of transactions on Blockchain platforms, especially in enterprise Blockchain platforms, where multiple signatures from a set of peers need to be produced to endorse a transaction. However, such process is often complex and time-consuming. Multi-signature, which can improve transaction efficiency by having a set of signers cooperate to produce a joint signature, has attracted extensive attentions. In this work, we propose two multi-signature schemes, GMS and AGMS, which are proved to be more secure and efficient than state-of-the-art multi-signature schemes. Besides, we implement the proposed schemes in a real Enterprise Blockchain platform, Fabric. Experiment results show that the proposed AGMS scheme helps achieve the goal of high transaction efficiency, low storage complexity, as well as high robustness against rogue-key attacks and k-sum problem attacks.