Design of Key-Managing Module of Database Encryption System

When a security system is designed, the design of key-managing module is a very difficult problem and must be solved firstly. This paper proposes a scheme of design and implementation of key-managing module of database encryption system in detail, based on analysis of such aspects as creating keys, distributing keys, verifying keys, replacing keys, etc. The presented results show that the key-managing module built by the scheme is secure, feasible, and efficient.