A Lightweight and Secure Data Sharing Scheme for Mobile Device in Cloud Computing

With the developing of cloud computing, an increasing number of businesses are apt to store the big data on cloud servers and share it effectively with users. Many massive data sharing solutions have been developed in many industries so far. However, there are still many problems in sharing sensitive big data in the cloud such as data security. Furthermore, big data sharing schemes on mobile terminal devices frequently entail a substantial processing cost. We propose an efficient and secure big data sharing scheme for mobile devices to address the current issues. Firstly, we use attribute-based encryption to achieve big data sharing. Secondly, we employ proxy server for encryption and decryption, thereby greatly decreasing computational overhead on mobile devices. Finally, the scheme gains high efficiency by reducing the use of complex bilinear pairs.