A dual privacy-preservation scheme for cloud-based eHealth systems

With the development of wireless sensor network and internet, ubiquitous eHealth care systems are booming. However, a great deal of data computing and storage processing restrict the scalability of ubiquitous eHealth. As a solution, cloud-based eHealth is coming up. However, using cloud-computing model often causes some privacy concerns. Massive medical data in eHealth system contain numerous sensitive information and electronic health records of users. Meanwhile, if data encryption is adopted to protect privacy, cloud center cannot process data. To solve this problem, a scheme based on fully homomorphism conception for privacy protection and data processing of eHealth is proposed in this paper. Our scheme not only meets the aforementioned dual requirements but also limit the arbitrary actions of patients and doctors.