网络与信息安全学报2025，Vol.11Issue(1)：40-53,14.DOI:10.11959/j.issn.2096-109x.2025005
可支持公平验证的数据群组灵活协同共享方案
Flexible and collaborative data group sharing scheme with fairness and verifiability
摘要
Abstract
With the rapid development of cloud services,data sharing and dissemination have received widespread attention.Attribute-based conditional proxy re-encryption(AB-CPRE)has been widely used as a secure and effi-cient method to achieve group data sharing and dissemination.However,existing AB-CPRE schemes were unable to support multiple data disseminators within the same group to collaboratively disseminate data to new user groups,as only a single data disseminator was permitted,which limited flexibility.Additionally,in these schemes,the computa-tion cost for users to generate proofs increased with the number of attributes in the ciphertext,resulting in low effi-ciency in ensuring fairness and verifiability between the cloud server and the user.To address these shortcomings,a flexible and collaborative data group sharing scheme with fairness and verifiability was proposed.A collaborative dissemination tree was designed to enable multiple data disseminators within the same group to collaboratively dis-seminate data to new user groups.Furthermore,the proposed scheme incorporated a constant-cost proof generation mechanism,allowing users to generate proofs with constant computation cost,thereby ensuring efficient fairness and verifiability between the cloud server and the user.Formal security proofs and performance evaluations demon-strate that the proposed scheme is provably secure,fair,and verifiable.It is shown to offer greater efficiency in proof generation,re-encryption key generation,and decryption phases compared to existing schemes.关键词
协同数据传播/基于属性的条件代理重加密/协同传播树/公平可验证Key words
collaborative data dissemination/attribute-based conditional proxy re-encryption/collaborative dissemi-nation tree/fairness and verifiability分类
计算机与自动化引用本文复制引用
王树兰,甘竞宏,赵陈斌,邹家须,赵国英,张应辉..可支持公平验证的数据群组灵活协同共享方案[J].网络与信息安全学报,2025,11(1):40-53,14.基金项目
国家自然科学基金(62072369,61702341) （62072369,61702341）
深圳技术大学深圳市高等院校稳定支持项目(SZWD2021012) （SZWD2021012）
陕西省技术创新引导计划(基金)(2023-YD-CGZH-31) The National Natural Science Foundation of China(62072369,61702341),The Shenzhen Technology Uni-versity of Shenzhen Higher Education Stability Support Program(SZWD2021012),The Technology Innovation Leading Pro-gram of Shaanxi(2023-YD-CGZH-31) （基金）
