Generic Privacy Preserving Private Permissioned Blockchains

IF 0.4 Q4 COMPUTER SCIENCE, INFORMATION SYSTEMS
Frederic A. Hayek, Mirko Koscina, P. Lafourcade, Charles Olivier-Anclin
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引用次数: 1

Abstract

Private permissioned blockchains are becoming gradually more sought-after. Such systems are reachable by authorized users, and tend to be completely transparent to whoever interacts with the blockchain. In this paper, we mitigate the latter. Authorized users can now stay unlinked to the transaction they propose in the blockchain while being authenticated before being allowed to interact. As a first contribution, we developed a consensus algorithm for private permissioned blockchains based on Hyperledger Fabric and the Practical Byzantine Fault Tolerance consensus. Building on this blockchain, five additional variations achieving various client-wise privacy preserving levels are proposed. These different protocols allow for different use cases and levels of privacy control and sometimes its revocation by an authority. All our protocols guarantee the unlinkability of transactions to their issuers achieving anonymity or pseudonymity. Miners can also inherit some of the above privacy preserving setting. Naturally, we maintain liveness and safety of the system and its data.
通用隐私保护私有许可区块链
私人许可的区块链正逐渐变得越来越受欢迎。这样的系统可以被授权用户访问,并且对于与区块链交互的任何人来说都是完全透明的。在本文中,我们减轻了后者。授权用户现在可以不链接到他们在区块链中提出的交易,同时在被允许进行交互之前进行身份验证。作为第一个贡献,我们基于超级账本结构和实用拜占庭容错共识为私有许可区块链开发了共识算法。在此区块链的基础上,提出了实现各种客户端隐私保护级别的五个附加变体。这些不同的协议支持不同的用例和级别的隐私控制,有时还允许权威机构撤销隐私控制。我们所有的协议都保证交易与发行者的不可链接性,实现匿名或假名。矿工也可以继承上面的一些隐私保护设置。当然,我们要维护系统及其数据的活力和安全性。
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
Applied Computing Review
Applied Computing Review COMPUTER SCIENCE, INFORMATION SYSTEMS-
自引率
40.00%
发文量
8
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