西安电子科技大学学报（自然科学版）2023，Vol.50Issue(6)：195-206,12.DOI:10.19665/j.issn1001-2400.20230306
支持访问控制与密钥更新的加密去重方案
Encrypted deduplication scheme with access control and key updates
摘要
Abstract
In the scenario of data outsourcing,access control and key update have an important application value.However,it is hard for existing encrypted deduplication schemes to provide flexible and effective access control and key update for outsourcing user data.To solve this problem,an encrypted deduplication scheme with access control and key updates is proposed.First,an efficient access control scheme for encrypted deduplication is designed based on the ciphertext-policy attribute-based encryption and the proof of ownership.It combines access control with proof of ownership and can simultaneously detect whether a client has the correct access right and whole data content only through a round of interaction between the client and the cloud server,effectively preventing unauthorized access and ownership fraud attacks launched by adversaries.The scheme has features such as low computation overhead and few communication rounds.Second,by combining the design ideas of server-aided encryption and random convergent encryption,an updatable encryption scheme suitable for encrypted deduplication is designed.It is combined with the proposed access control scheme to achieve hierarchical and user-transparent key updates.The results of security analysis and performance evaluation show that the proposed scheme can provide confidentiality and integrity for outsourcing user data while achieving efficient data encryption,decryption,and key update.关键词
云存储/加密去重/访问控制/密钥更新/可更新加密Key words
cloud storage/encrypted deduplication/access control/key update/updatable encryption分类
信息技术与安全科学引用本文复制引用
哈冠雄,贾巧雯,陈杭,贾春福,刘兰清..支持访问控制与密钥更新的加密去重方案[J].西安电子科技大学学报（自然科学版）,2023,50(6):195-206,12.基金项目
国家重点研发计划(2018YFA0704703) （2018YFA0704703）
国家自然科学基金(61972215,62172238,61972073) （61972215,62172238,61972073）
天津市自然科学基金(20JCZDJC00640) （20JCZDJC00640）
中央高校基本科研业务费专项资金 （）
