DPNM: A Differential Private Notary Mechanism for Privacy Preservation in Cross-Chain Transactions

IF 8 1区计算机科学 Q1 COMPUTER SCIENCE, THEORY & METHODS

IEEE Transactions on Information Forensics and Security Pub Date : 2025-01-08 DOI:10.1109/TIFS.2025.3527357

Kai Zhang;Pei-Wei Tsai;Jiao Tian;Wenyu Zhao;Ke Yu;Hongwang Xiao;Xinyi Cai;Longxiang Gao;Jinjun Chen

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引用次数: 0

Abstract

Notary cross-chain transaction technologies have obtained broad affirmation from industry and academia as they can avoid data islands and enhance chain interoperability. However, the increased privacy concern in data sharing makes the participants hesitate to upload sensitive information without the trust foundation of the external network. To address this issue, this paper proposes a differential private notary mechanism (DPNM) to preserve privacy in blockchain interoperations. It establishes a fully trusted notary organization to conduct data perturbation before replying query to the external blockchain network. In addition, the DPNM contains two built-in privacy budget allocation schemes: Efficiency priority scheme (EPS) and Privacy priority scheme (PPS). These schemes unify the privacy preferences among different nodes based on multi-node consensus in the decentralized environment. The EPS can generate noise linearly and work efficiently, and the PPS reflects better on nodes’ preferences. This paper utilizes several metrics including mechanism errors, elapsed time, latency, and gas consumption to evaluate the performance of DPNM compared to the traditional mechanisms. The experiment results indicate that the proposed mechanism can meet privacy preferences among different nodes and provide better utility with little extra cost.

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DPNM：跨链交易中隐私保护的差分私人公证机制

公证跨链交易技术由于可以避免数据孤岛，增强链的互操作性，得到了业界和学术界的广泛肯定。然而，数据共享中对隐私的担忧增加，使得参与者在没有外部网络信任基础的情况下，对上传敏感信息犹豫不决。为了解决这一问题，本文提出了一种差分私人公证机制（DPNM）来保护区块链互操作中的隐私。它建立了一个完全可信的公证组织，在回复外部区块链网络的查询之前进行数据扰动。此外，DPNM还内置两种隐私预算分配方案：效率优先方案（Efficiency priority scheme， EPS）和隐私优先方案（privacy priority scheme， PPS）。这些方案在去中心化环境下，基于多节点共识统一不同节点之间的隐私偏好。EPS能线性产生噪声，工作效率高，PPS能更好地反映节点的偏好。本文使用了几个指标，包括机制错误、运行时间、延迟和气体消耗，来评估DPNM与传统机制相比的性能。实验结果表明，该机制可以满足不同节点之间的隐私偏好，并以较少的额外成本提供更好的效用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Information Forensics and Security 工程技术-工程：电子与电气

CiteScore

14.40

自引率

7.40%

发文量

234

审稿时长

6.5 months

期刊介绍： The IEEE Transactions on Information Forensics and Security covers the sciences, technologies, and applications relating to information forensics, information security, biometrics, surveillance and systems applications that incorporate these features