具有前向安全性的组密钥分发方案设计与实验分析  

Design and Experimental Analysis of Group Key Distribution Scheme with Forward Secrecy

作　　者：沈华[1] 李继强 谢海涛[1] 谌刚 张明武[1] SHEN Hua;LI Jiqiang;XIE Haitao;SHEN Gang;ZHANG Mingwu(School of Computer Science,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]湖北工业大学计算机学院,武汉430068

出　　处：《实验室研究与探索》2022年第11期39-44,123,共7页Research and Exploration In Laboratory

基　　金：国家自然科学基金(61702168);湖北工业大学绿色工业科技引领计划项目(XJ2021000901);教育部协同育人项目(201801034045)。

摘　　要：针对已有组密钥分发方案中的安全隐患,基于对称二元多项式提出一种无需可信第三方的具有前向安全性的组密钥分发方案。方案中,组内每对用户利用对称二元多项式的特征协商出一个对称密钥,实现组密钥的安全分发。每个用户维护一张通信记录表用于更新用户间的对称密钥,实现组密钥分发的前向安全性。针对方案的正确性、安全性和性能优势,给出了详细的证明和仿真实验分析。A forward-secure group key distribution scheme without a trusted third-party server is proposed for the potential security threats based on the symmetric bivariate polynomial. Each pair of users securely negotiate a symmetric key by utilizing the characteristics of the symmetric bivariate polynomial, realizing the safe distribution of the group key. Furthermore, each user maintains a communication record table to update the symmetric keys for securely distributing the group key for the next round of group communication. Therefore, our scheme realizes the group key distribution with forwarding secrecy. The detailed proofs and experimental analysis demonstrate our scheme’s correctness, security, and performance advantages.

关 键 词：组密钥 密钥分发 对称二元多项式 前向安全性 

分 类 号：TN309.7[电子电信—物理电子学]