Ciphertext Policy attribute-Based Encryption (CP-ABE) is a well-known access control technique, where the data content shared by a single user is accessed by several authorized entities with distinct data access right...
详细信息
Ciphertext Policy attribute-Based Encryption (CP-ABE) is a well-known access control technique, where the data content shared by a single user is accessed by several authorized entities with distinct data access rights, which forms the basis of the point to multi-point communication systems. In such type of systems, the process of userattributes management and useraccess policy specifications are found to be the challenging tasks. This work introduces an enhanced CP-ABE based access control algorithm, which extracts meaningful userattributes from a set of the user given attributes and stores it over a separate database system. Based upon the extracted attributes, a complete user attribute hierarchical access structure is framed. The useraccess is provided only when the userattributes hierarchicalaccessstructure satisfies the useraccess policy defined by the data owner. In this manner, the proposed system better solves the drawbacks of existing systems. Experiments show that our proposed algorithm provides comparatively efficient useraccess than existing CP-ABE techniques and it has lesser computational complexity.
暂无评论