通信学报2025，Vol.46Issue(3)：234-247,14.DOI:10.11959/j.issn.1000-436x.2025040
公平可验证的多用户同态代理重加密方案
Fairly verifiable multi-user homomorphic proxy re-encryption scheme
摘要
Abstract
To address the challenges of multi-user ciphertext sharing and secure fair computation in untrusted cloud envi-ronments where traditional fully homomorphic encryption algorithms prove inadequate,a verifiable identity-based multi-user homomorphic proxy re-encryption scheme was proposed.Firstly,a non-cooperative game model was constructed,and a dynamic resource allocation algorithm was proposed to achieve fair resource distribution for third-party cloud serv-ers,ensuring fairness and efficiency in resource utilization.Secondly,ciphertext conversion was implemented through proxy re-encryption technology to support multi-user homomorphic computation and meet fine-grained ciphertext shar-ing requirements.Finally,an authorized function-based homomorphic signature was employed to verify computation re-sults and cloud server behaviors,with security proofs of the proposed scheme was provided under the standard model.Theoretical analysis and experimental results demonstrate that the proposed scheme exhibits re-encryption verifiability and enables multi-user homomorphic computation.关键词
代理重加密/同态加密/博弈论/可证明安全Key words
proxy re-encryption/homomorphic encryption/game theory/provable security分类
计算机与自动化引用本文复制引用
侯金秋,彭长根,丁红发,杨训..公平可验证的多用户同态代理重加密方案[J].通信学报,2025,46(3):234-247,14.基金项目
国家自然科学基金资助项目(No.62272124) （No.62272124）
贵州省教育厅自然科学研究基金资助项目(No.[2023]065,No.[2023]064) （No.[2023]065,No.[2023]064）
安徽财经大学校级科研基金资助项目(No.ACKYB24016) The National Natural Science Foundation of China(No.62272124),The Natural Science Research Program of D.o.E.of Guizhou(No.[2023]065,No.[2023]064),Anhui University of Finance&Economics University-level Research Project(No.ACKYB24016) （No.ACKYB24016）
