Cloud based privacy preserving secure health data storage and retrieval system

Data sharing is an important functionality in cloud environment. The system proposes to build privacy into e-healthcare system with the help of private cloud. Privacy of the stored health data can be achieved by encrypting the data before storing it on cloud server. By doing this we can limit the user access for keyword search. Since one cannot perform plaintext search over encrypted content. But again it is necessary to provide keyword search mechanism to identify the encrypted source file. The salient features of the system are efficient key management, privacy preserving data storage and retrieval. The implemented scheme provides the platform for user to store and retrieve the health information securely on cloud storage by encrypting the health data before storing it on cloud server. The system also provides user to search for appropriate file by using keyword search mechanism.