Secure and Privacy-Preserving Querying of Personal Health Records in the Cloud [chapter]

Samira Barouti, Feras Aljumah, Dima Alhadidi, Mourad Debbabi
2014 Lecture Notes in Computer Science  
Personal Health Records (PHR) are user-friendly, online solutions that give patients a way of managing their own health information. Many of the current PHR systems allow storage providers to access patients' data. Recently, architectures of storing PHRs in cloud have been proposed. However, privacy remains a major issue for patients. Consequently, it is a promising method to encrypt PHRs before outsourcing. Encrypting PHRs prevents health organizations from analyzing medical data. In this
more » ... , we propose a protocol that would allow health organizations to produce statistical information about encrypted PHRs stored in the cloud. The protocol depends on two threshold homomorphic cryptosystems: Goldwasser-Micali (GM) and Paillier. It executes queries on Kd-trees that are constructed from encrypted health records. It also prevents patients from inferring what health organizations are concerned about. We experimentally evaluate the performance of the proposed protocol and report on the results of implementation.
doi:10.1007/978-3-662-43936-4_6 fatcat:hwexs5uy3zfevfsaqxdfky3q6y