Policy-Based Group Signature Scheme from Lattice
作者机构：School of Computer Science and TechnologyHenan Polytechnic UniversityJiaozuo454000China School of Electronic EngineeringDublin City UniversityDublin 9Ireland
出 版 物：《Computers, Materials & Continua》 (计算机、材料和连续体（英文）)
年 卷 期：2022年第72卷第8期
页 面：4069-4085页
核心收录：
基 金：supported by the National Natural Science Foundation of China(61802117) Support Plan of Scientific and Technological Innovation Team in Universities of Henan Province(20IRTSTHN013) the Youth Backbone Teacher Support Program of Henan Polytechnic University under Grant(2018XQG-10)
主 题：Group signature policy-based signature lattice-based cryptography zero-knowledge proof
摘 要：Although the existing group signature schemes from lattice have been optimized for efficiency,the signing abilities of eachmember in the group are relatively *** may not be suitable for complex *** by the pioneering work of Bellare and Fuchsbauer,we present a primitive called policy-based group *** policy-based group signatures,group members can on behalf of the group to sign documents that meet their own policies,and the generated signatures will not leak the identity and policies of the ***,the group administrator is allowed to reveal the identity of signer when a controversy *** the analysis of application scenarios,we concluded that the policy-based group signature needs to meet two essential security properties:simulatability and *** we construct a scheme of policy-based group signature from lattice through techniques such as commitment,zero-knowledge proof,rejection *** security of our scheme is proved to be reduced to the module short integer solution(MSIS)and module learning with errors(MLWE)hard ***,we make a performance comparison between our scheme and three lattice-based group signature *** result shows that our scheme has more advantages in storage overhead and the sizes of key and signature are decreased roughly by 83.13%,46.01%,respectively,compared with other schemes.
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