Towards Secure Public Directory for Privacy-Preserving Data Sharing

In the age of big data, information sharing paradigm has been fundamentally changed: Data collection and consumption are increasingly decentralized (partly due to the advent of personal computing devices), and sharing personal data over the Internet becomes a prominent paradigm for new applications. One of these applications is Health Information Exchange (or HIE) where a patient's electronic medical record (EMR) was produced at one hospital, and is consumed by a physician in another hospital.