Abstract:Due to the complexity of the wireless office network environment in the cloud computing environment, the data resources of the mobile terminal users have a big security risk. In order to improve the security of office data access in mobile cloud service environment, a secure access control mechanism based on improved CP-ABE (ciphertext-policy attributed-based encryption) is proposed in this paper. By combining the electronic signature technology, the proposed method improves the traditional property encryption scheme and achieves a more efficient mobile cloud computing security access control. Simulation results show that the proposed method requires less computational overhead and less storage as compared with other methods and has more computational efficiency. Therefore, it is suitable for a variety of office applications for mobile users in a cloud service environment.