A Privacy-Preserving Multi-Authority Attribute-Based Encryption Approach for Mobile Healthcare

With the development and popularization of smart phones and wireless network of body sensor, mobile healthcare has aroused widespread concern. In the mobile healthcare, smart phone is a bridge between wireless body sensor and medical center, and bears the function of medical information transmission. Confidentiality and efficiency in the process of data transmission need to be considered. However, smartphone users are not always available, so we must have to consider medical service interruption in mobile healthcare. In this paper, we propose a privacy preserving protocol for personal health information based on multi-authority, which can effectively and safely transmits health information. When smart phones are not available, the protocol can find qualified helper to transmit information through temporary authorization, so that users can get uninterrupted medical service to guarantee the life safety.