On Identity, Transaction, and Smart Contract Privacy on Permissioned and Permissionless Blockchain: A Comprehensive Survey

被引：0
|
作者：
Liang, Wei [1 ,2 ]
Liu, Yaqin [3 ]
Yang, Ce [1 ,2 ]
Xie, Songyou [3 ]
Li, Kuanching [1 ,2 ]
Susilo, Willy [4 ]
机构：
[1] School of Computer Science and Engineering, Hunan University of Science and Technology, Xiangtan, China
[2] Hunan Key Laboratory for Service Computing and Novel Software Technology, Xiangtan, China
[3] College of Computer Science and Electronic Engineering, Hunan University, Changsha, China
[4] Institute of Cybersecurity and Cryptology (iC2), University of Wollongong, Wollongong,NSW, Australia
来源：
ACM Computing Surveys | 2024年 / 56卷 / 12期
关键词：
Blockchain is a decentralized distributed ledger that combines multiple technologies; including chain data structures; P2P networks; consensus algorithms; cryptography; and smart contracts. This gives the blockchain the characteristics of decentralization; immutability; and traceability. However; blockchain stores smart contracts and transactions in blocks publicly; which poses the risk of data leakage and misuse. For example; by mining and analyzing blockchain transaction information; attackers can correlate transactions with user information; resulting in the disclosure of user privacy. Many current reviews focus on the privacy of permissionless blockchains or cryptocurrencies; requiring more in-depth investigations and detailed categorical analysis. To fill this gap; this work comprehensively reviews the latest and traditional methods related to identity; transaction; and smart contract privacy within permissioned and permissionless blockchains. Additionally; we summarize the existing problems; threats; and challenges of data management in different blockchain architectures. Last; we discuss future research directions for blockchain privacy protection technology; which can offer feasible ideas for researchers to explore further. © 2024 held by the owner/author(s);
D O I：
10.1145/3676164
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