Zero-Cerd:A Self-Blindable Anonymous Authentication System Based on Blockchain  

作　　者：YANG Kunwei YANG Bo WANG Tao ZHOU Yanwei 

机构地区：[1]School of Computer Science,Shaanxi Normal University,Xi’an 710119,China

出　　处：《Chinese Journal of Electronics》2023年第3期587-596,共10页电子学报（英文版）

基　　金：supported by National Key R&D Program of China(2017YFB0802000);the National Natural Science Foundation of China(U2001205,61772326,61802241,61802242);National Cryptography Development Fund during the 13th Five-year Plan Period(MMJJ20180217);the Fundamental Research Funds for the Central Universities(GK202003079,GK202007033,2020TS087).

摘　　要：While the Internet of things brings convenience to people’s lives,it will also bring people hidden worries about data security.As an important barrier to protect data security,identity authentication is widely used in the Internet of things.However,it is necessary to protect users’identity privacy while authenticating their identity.Anonymous authentication technology is often used to solve the contradiction between legitimacy and privacy in the authentication process.The existing anonymous authentication scheme has many problems in practical application such as the inability to achieve complete anonymity,the high computational complexity of the algorithm,and the corruption of the central authority.Aiming at the privacy of authentication,we propose Zero-Cerd,a self-blindable anonymous authentication system based on blockchain and dynamic accumulator.The self-blinding properties of the credential enable the users themselves to generate a new validly pseudonymous credential.With the help of zero-knowledge proof technology,users can prove the validity of their credentials without disclosing any information.Security analysis shows that our scheme has achieved the expected security objectives.Compared with the existing schemes,our scheme has the advantages of complete anonymity and high efficiency,and is more suitable for IoT applications with privacy protection requirements.

关 键 词：IOT Blockchain Anonymous authentication Privacy protection Dynamic accumulator. 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论] TP309[自动化与计算机技术—计算机科学与技术]