Information Processing for Encrypted Database

In order to improve database security, and to avoid information exposing of access control strategy, data item was used as the encrypted principle, applying its property of basic granularity to strengthen the database security. Some solved method was given in the database currently. A new query algorithm was used to acquire improved encrypted data. The proposed algorithm uses average-value as principle to conceal the clear statement sequence. For field encryption, the information exposing was avoided by interference factor. A kind of information exposure of encrypted database was given in limited value area. The simulation results proved that the database security of modified method is higher than other method, and modified method has shorter response time.