A Novel Construction of Updatable Identity-Based Hash Proof System and Its Applications  

作　　者：QIAO Zirui ZHOU Yanwei YANG Bo ZHANG Wenzheng ZHANG Mingwu 

机构地区：[1]School of Computer Science,Shaanxi Normal University,Xi’an 710119,China [2]State Key Laboratory of Cryptology,Beijing 100878,China [3]Science and Technology on Communication Security Laboratory,Chengdu 610041,China [4]School of Computere,Hubei University of Technology,Wuhan 430068,China [5]Henan Key Laboratory of Network Cryptography Technology,Zhengzhou 450001,China

出　　处：《Chinese Journal of Electronics》2023年第3期564-576,共13页电子学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(62272287,U2001205);the Sichuan Science and Technology Program(2020JDJQ0076);the Research Funds of Henan Key Laboratory of Network Cryptography Technology(LNCT2021-A04).

摘　　要：In the previous works,to further provide the continuous leakage resilience for the identity-based encryption scheme,a new cryptography primitive,called updatable identity-based hash proof system(U-IB-HPS),was proposed.However,most of the existing constructions have some deficiencies,they either do not have perfect key update function or the corresponding security with tight reduction relies on a non-static complexity assumption.To address the above problems,a new construction of U-IB-HPS is created,and the corresponding security of our system is proved based on the static complexity assumption.Also,the corresponding comparisons and analysis of performances show that our proposal not only achieves the perfect key update function and the anonymity,but also has the tight security reduction.In additional,our proposal achieves the same computational efficiency as other previous systems.To further illustrate the practical function of U-IB-HPS,a generic method of non-interactive data authorization protocol with continuous leakage resilience is designed by employing U-IB-HPS as an underlying tool,which can provide continuous leakage-resilient data authorization function for the cloud computing.Hence,the application field of U-IB-HPS is further extended through our study.

关 键 词：Updatable identity-based hash proof system ANONYMITY Key update Leakage resilience. 

分 类 号：TN918.4[电子电信—通信与信息系统]