Open Access
ARTICLE
A Conditionally Anonymous Linkable Ring Signature for Blockchain Privacy Protection
Quan Zhou1,*, Yulong Zheng1, Minhui Chen2, Kaijun Wei2
1 School of Mathematics and Information Science, Guangzhou University, Guangzhou, 510006, China
2 School of Computer Science and Cyber Engineering, Guangzhou University, Guangzhou, 510006, China
* Corresponding Author: Quan Zhou. Email:
(This article belongs to the Special Issue: Blockchain, Artificial Intelligence, Internet of Things and 6G Convergence)
Computer Systems Science and Engineering 2023, 47(3), 2851-2867. https://doi.org/10.32604/csse.2023.039908
Received 24 February 2023; Accepted 27 April 2023; Issue published 09 November 2023
Abstract
In recent years, the issue of preserving the privacy of parties involved
in blockchain transactions has garnered significant attention. To ensure privacy protection for both sides of the transaction, many researchers are using
ring signature technology instead of the original signature technology. However, in practice, identifying the signer of an illegal blockchain transaction
once it has been placed on the chain necessitates a signature technique that
offers conditional anonymity. Some illegals can conduct illegal transactions
and evade the law using ring signatures, which offer perfect anonymity. This
paper firstly constructs a conditionally anonymous linkable ring signature
using the Diffie-Hellman key exchange protocol and the Elliptic Curve Discrete Logarithm, which offers a non-interactive process for finding the signer
of a ring signature in a specific case. Secondly, this paper’s proposed scheme is
proven correct and secure under Elliptic Curve Discrete Logarithm Assumptions. Lastly, compared to previous constructions, the scheme presented in this
paper provides a non-interactive, efficient, and secure confirmation process.
In addition, this paper presents the implementation of the proposed scheme
on a personal computer, where the confirmation process takes only 2, 16,
and 24 ms for ring sizes of 4, 24 and 48, respectively, and the confirmation
process can be combined with a smart contract on the blockchain with a
tested millisecond level of running efficiency. In conclusion, the proposed
scheme offers a solution to the challenge of identifying the signer of an illegal
blockchain transaction, making it an essential contribution to the field.
Keywords
Cite This Article
APA Style
Zhou, Q., Zheng, Y., Chen, M., Wei, K. (2023). A conditionally anonymous linkable ring signature for blockchain privacy protection. Computer Systems Science and Engineering, 47(3), 2851-2867. https://doi.org/10.32604/csse.2023.039908
Vancouver Style
Zhou Q, Zheng Y, Chen M, Wei K. A conditionally anonymous linkable ring signature for blockchain privacy protection. Comput Syst Sci Eng. 2023;47(3):2851-2867 https://doi.org/10.32604/csse.2023.039908
IEEE Style
Q. Zhou, Y. Zheng, M. Chen, and K. Wei "A Conditionally Anonymous Linkable Ring Signature for Blockchain Privacy Protection," Comput. Syst. Sci. Eng., vol. 47, no. 3, pp. 2851-2867. 2023. https://doi.org/10.32604/csse.2023.039908