Comparative study on search techniques over encrypted data

When private data or sensitive information is stored in the database, a typical way to protect the data is to encrypt the data before storing it. For efficiently retrieving the data, an effective search mechanism is needed that works over the encrypted data smoothly. When data is encrypted the performance of querying the database is degraded. In this paper we are going through the various search techniques which is used for searching over encrypted data and maintain a tradeoff between security and performance.