%A CHEN Cheng, Nurmamat HELIL %T CP-ABE Based Access Control of Data Set with Conflict of Interest %0 Journal Article %D 2018 %J Computer Science %R 10.11896/j.issn.1002-137X.2018.11.022 %P 149-154 %V 45 %N 11 %U {https://www.jsjkx.com/CN/abstract/article_17848.shtml} %8 %X Cloud storage allows data owners to store their encrypted data in the cloud,so as to provide data sharing services for users.However,there might exist a conflict of interest among different data stored by the same data owner.In this regard,this paper proposed a ciphertext-policy attribute-based encryption (CP-ABE) based access control scheme for the data set with conflict of interest.In this scheme,the data owner embeds a virtual attribute into the access tree with the “AND” gate to get the modified access tree,and encrypts the data in the data set with conflict of interest under the modified access tree,thus avoiding errors,cheats or risks caused by an individual user’s access to some or all data in the data set with conflict of interest.Finally,the efficiency and security of this scheme were analyzed.The analytical results suggest the proposed scheme is efficient and secure.