Health Record Maintenance using Cloud Computing and Multi Authority Attribute Based Encryption

The health records of various patients are monitored, stored and accessed using cloud providers. There may a chance of accessing and data exposure to third party servers which are unauthorized. In order to provide a secured access to data, Encryption is considered to be a most promising method. Though many issues are concerned in encryption such as key management, efficient access and user revocation the most prominent changeling is ensuring fine grained. This proposed method states various framework and architectures which would provide a control over the data access and also helps in storing the patient's record in semi trusted servers. In order to achieve fine grained and secured data access over health records, Multi-Authority Attribute based encryption (MA-ABE) technique helps in encrypting each and every person health record. The suggested encryption standards have a centric view on multiple data that divides the users into multiple domains which in reduces the complicity of key management for both users and owners. High level of privacy is provided by exploiting multi authority encryption method. This also governs dynamic change in accessing policies and also supports efficient user revocation under emergency situation. The experimental results help in providing the scalability, efficiency of proposed method.