Open Access

ARTICLE

A Novel Post-Quantum Blind Signature for Log System in Blockchain

Gang Xu^1,2, Yibo Cao¹, Shiyuan Xu¹, Ke Xiao¹, Xin Liu³, Xiubo Chen^4,*, Mianxiong Dong⁵

1 School of Information Science and Technology, North China University of Technology, Beijing, 100144, China
2 Beijing Key Laboratory of Security and Privacy in Intelligent Transportation, Beijing Jiaotong University, Beijing, 100044, China
3 School of Information Engineering, Inner Mongolia University of Science & Technology, Baotou, 014010, China
4 Information Security Center, State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China
5 Muroran Institute of Technology, Muroran, 050-8585, Japan

* Corresponding Author: Xiubo Chen. Email:

Computer Systems Science and Engineering 2022, 41(3), 945-958. https://doi.org/10.32604/csse.2022.022100

Received 27 July 2021; Accepted 02 September 2021; Issue published 10 November 2021

Abstract

In recent decades, log system management has been widely studied for data security management. System abnormalities or illegal operations can be found in time by analyzing the log and provide evidence for intrusions. In order to ensure the integrity of the log in the current system, many researchers have designed it based on blockchain. However, the emerging blockchain is facing significant security challenges with the increment of quantum computers. An attacker equipped with a quantum computer can extract the user's private key from the public key to generate a forged signature, destroy the structure of the blockchain, and threaten the security of the log system. Thus, blind signature on the lattice in post-quantum blockchain brings new security features for log systems. In our paper, to address these, firstly, we propose a novel log system based on post-quantum blockchain that can resist quantum computing attacks. Secondly, we utilize a post-quantum blind signature on the lattice to ensure both security and blindness of log system, which makes the privacy of log information to a large extent. Lastly, we enhance the security level of lattice-based blind signature under the random oracle model, and the signature size grows slowly compared with others. We also implement our protocol and conduct an extensive analysis to prove the ideas. The results show that our scheme signature size edges up subtly compared with others with the improvement of security level.

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Citations