Visible to the public An Anonymous Editable Blockchain Scheme Based on Certificateless Aggregate Signature

TitleAn Anonymous Editable Blockchain Scheme Based on Certificateless Aggregate Signature
Publication TypeConference Paper
Year of Publication2021
AuthorsLi, Kemeng, Zheng, Dong, Guo, Rui
Conference Name2021 3rd International Conference on Natural Language Processing (ICNLP)
Date PublishedMarch 2021
PublisherIEEE
ISBN Number978-1-6654-1411-1
Keywordsaccountability, Aggregates, Analytical models, anonymity, anonymous messaging, blockchains, certificateless aggregate signature, editable blockchain, Law, natural language processing, pubcrawl, Registers, resilience, Resiliency, Scalability, smart contracts
AbstractBlockchain technology has gradually replaced traditional centralized data storage methods, and provided people reliable data storage services with its decentralized and non-tamperable features. However, the current blockchain data supervision is insufficient and the data cannot be modified once it is on the blockchain, which will cause the blockchain system to face various problems such as illegal information cannot be deleted and breach of smart contract cannot be fixed in time. To address these issues, we propose an anonymous editable blockchain scheme based on the reconstruction of the blockchain structure of the SpaceMint combining with the certificateless aggregate signature algorithm. Users register with their real identities and use pseudonyms in the system to achieve their anonymity. If the number of users who agree to edit meets the threshold, the data on the blockchain can be modified or deleted, and our scheme has the function of accountability for malicious behavior. The security analysis show that the proposed certificateless aggregate signature algorithm enjoys the unforgeability under the adaptive selected message attack. Moreover, the method of setting the threshold of related users is adopted to guarantee the effectiveness and security of editing blockchain data. At last, we evaluate the performance of our certificateless aggregate signature algorithm and related schemes in theoretical analysis and experimental simulation, which demonstrates our scheme is feasible and efficient in storage, bandwidth and computational cost.
URLhttps://ieeexplore.ieee.org/document/9537874
DOI10.1109/ICNLP52887.2021.00016
Citation Keyli_anonymous_2021