An Anonymous Protocol with User Identification and Linking Capabilities for User Privacy in a Permissioned Blockchain

Electronics

Gyeongjin Ra¹  Imyeong Lee¹  MdZakirul Alam Bhuiyan²  Deahee Seo³ 

[1] Department of Computer Science and Engineering, Soonchunhyang University, Asan-si 31538, Korea;Department of Computer Science and Information Sciences, Fordham University, Bronx, NY 10458, USA;Department of Computer Science, Kennesaw State University, Marietta, GA 30060, USA;

关键词: permissioned blockchain;    privacy;    pseudonym;    anonymous credential system;   

DOI  :  10.3390/electronics9081183

来源: DOAJ

【 摘 要 】

A permissioned blockchain includes a user in the network after verifying the user’s identity, in contrast to Bitcoin, which is a public blockchain that allows network participation without third-party approval. The two types of permissioned blockchains are private blockchains, each consisting of one server and multiple users, and consortium blockchains, which consist of groups of private blockchains. However, a blockchain has privacy issues, such as user tracking and inference. Therefore, cryptography should be applied for user privacy in a blockchain. There is a lot of research on anonymous protocols for privacy in a blockchain. In this paper, we provide a scheme for user management, i.e., identification and authorization, in a permissioned blockchain. We also propose an anonymous protocol with user identification and transaction linking capabilities provided by the private server, strictly to solve privacy concerns.

【 授权许可】

Unknown