基于椭圆曲线的CA系统的设计与实现

Design and implementation of CA system based on elliptic curve

在网上交易中,作为交易双方相互信赖的第三方,CA系统的主要用途是发放和验证数字证书。因此,保证CA系统的安全性具有十分重要的意义。椭圆曲线密码体制不仅具有密钥短和计算效率高的优点,而且能够提供最高的位安全强度。从实践的角度,运用系统的方法,在研讨当前CA系统基础之上,将椭圆曲线密码体制应用于CA系统。在目前的电子商务交易中,基于椭圆曲线的CA系统的设计与实现,为认证系统的设计提供了一种新的参考。

The CA system is the third party which both sides mutually trust in the on-line transaction. Its main use is delivering and confirming digital certification, The CA system＇s security is self-evident. Elliptic curve not only has the advantage of short privacy key and high efficiency, but also can provide the highest bit security intensity. From the practice angle, using system method, in deliberates above the current CA system foundation, the elliptic curve password system is applied to the CA system. In current electronic commerce transaction, the design and realization based on elliptic curve CA system provides a new reference for the design of authentication system.