Secure Personal Health Record System with Attribute-Based Encryption in Cloud Computing

Personal health record which is stored safely in the cloud computing platform has captured the attention of cryptographic researchers. In order to assure the security of data, anyone can´t read and tamper it without permit. In this paper, we use attribute-based encryption(ABE) scheme which is an extension of identify-based encryption(IBE) to construct a system. In this system we adopt key-policy attribute-based encryption(KPABE) which can provide fine-grained access policy and better efficiency for user revocation.