Emergency mobile access to personal health records stored on an untrusted cloud

When storing files on an untrusted cloud, attribute based encryption is the cryptosystem usually chosen to securely encrypt the files while allowing fine grained access. When storing Personal Health Records (PHR), we find that allowing access to a user's emergency medical records (EMRs) during an emergency would be difficult to achieve while ensuring privacy preservation. Providing ECPs with unlimited and unrestricted access to EMRs is not an acceptable solution for a privacy view point. In this work our aim is to allow ECPs the ability to access a patient's EMRs, but only in the case of an emergency, preventing them from abusing their privileges. We propose a solution that solves this problem without requiring the participation of the patient in the process.