The Scheme of Multilevel Key-Managing Based on Elliptic Curve Cryptosystem

When a database encryption 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 key-managing of database encryption system in detail. Its security is based on elliptic curve discrete logarithm problem. The presented results show that the key-managing scheme is secure,feasible,and efficient.