摘要
以前的电子现金系统设计注重的只是“当前”的安全性考虑。然而,现在的电子现金系统越来越重视“前向安全性”的问题。利用主密钥机制,在不降低效率的情况下,可以对已投入使用的eCash^(TM)在线电子现金系统进行改造,使其具有前向安全性。一旦银行的私钥被泄露,能把损失限制到最小。
The former designs of the electronic cash system just pay attention on current safety.However,it puts more and more emphases on consideration of ＂forward security＂ nowadays.The text utilizes the mechanism of the master key scheme and rebuilds the eCashTM on-line electronic payment system that has been put in use,and makes it be provided with forward security.Mter the bank＇s disclosing private key,the system is able to confine the loss in minimum.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第7期152-154,166,共4页
Computer Engineering and Applications
基金
广东省自然科学基金(the Natural Science Foundation of Guangdong Province of China under Grant No.04010981)
广东省科技计划项目(No.2003C101015)
