The eHealth case study concerns a distributed e-health scenario. E-health requires immediate access to medical data. Outsourcing medical data to the cloud has several advantages, including cheap storage of large data files (like clinical images) and ubiquitous and distributed access to these data through the Internet. At the same time, reluctance to moving to the cloud is natural due to the sensitive nature of medical information and the lack of trust in CSPs.

In this scenario, a series of functionalities are needed, like creating, managing and updating medical histories, including results of clinical visits, searching for specific patients/histories and also a shared and cooperative access to these data according to access policies. The CLARUS solution will be applied to this case study to provide security-aware access to functionalities, which should be backed up by a series of auditing tools.

he management of Electronic Medical Records (EMR) is especially relevant for CLARUS. Patient records contain information that is highly identifying or confidential. Hence, EMRs shall be securely stored in the CLARUS cloud and appropriate privacy-preserving mechanisms should be implemented before outsourcing obfuscated data to the cloud with preservation of functionalities. Healthcare records also involve heterogeneous data regarding both their structure and type and CLARUS must demonstrate high level of data concealment in all situations. Securised interoperability between CLARUS platforms is important to enable cooperative access to medical data according to policies. This will serve as an ideal benchmark to test the generality of the CLARUS security mechanisms in enabling privacy preserving and, at the same time, functionality-preserving cloud services.