Search over Encrypted Data: Functionalities and Challenges

The growth of data production in the world brings with it capacities and requirements. On the one hand, the storage of generated data provides the possibility of reuse and analysis on the data that leads to the production of data science. On the other hand, large amounts of data require storage space and the ability to search over them. Cloud computing is a technological and operational model that addresses the storage and computing limitations of data storage and utilization. As well as searchable encryption as a cloud-based, highly used, technique, in addition to maintaining data security, it can search over them. In this paper, the searchable encryption methods and the limitations and capabilities of each one are examined. At the end, there are some explanations on how to use searchable encryption in medical data.