An Access Control Scheme Based on Access Tree Structure Pruning for Cloud Computing

In the era of rapid development of information, people are spreading and sharing information all the time. These resources bring us a lot of privacy challenges while bringing us convenience. Therefore, We propose an attribute based encryption access control scheme based on access tree structure pruning (ATSP-ABE). The scheme mainly prune the branch of the ID attribute of the right subtree user managed by the Data Owner (DO) and design the permission access attribute as the leaf node to replace the branch. For the left subtree of the access tree managed by the Attribute Authorization Center (AAC) the decision tree is generated by the data of the user feature attribute and the subtree with the best pruning performance is selected as the pruning result. Finally, pruning the reduced feature attributes in the decision tree in the access left subtree. The experimental results show that the ATSPABE scheme can improve the computational efficiency of attribute-based access control encryption, decryption and user attribute revocation in cloud computing. More than that makes the access tree structure more concise and strengthen the DO control attribute ability. Reducing Calculation overhead in the process of encryption and decryption of DO and AAC.