一种基于椭圆曲线密码体制的多级密钥管理方案

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

密钥管理方案的设计是数据库加密系统设计时必须首先解决的一个难题。将椭圆曲线加密算法和单向散列函数有机结合,提出了一种多级密钥管理方案,大大节省了密钥存储空间,使系统的加解密效率和安全性也得到改善。

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.