采用前向安全数字签字的移动代理设计与实现

Design and implementation of the mobile agent with forward-secure digital signature

在未来分布式计算机环境中移动代理系统起着极为重要的作用 ,这种采用异步式通信的软件代理可使整个网络的效率提高 .但是 ,软件编制的移动代理容易受其运行主机上恶意软件的攻击 ,保护移动代理不受窜扰成为移动代理能正常运行的关键 ,而一般的加密及签字技术不能直接适用于移动代理环境 ,针对于此 ,文中结合洋葱路由、SmartCard等技术提出了一个采用前向安全数字签名的移动代理系统 ,并分析了其安全性 .

The mobile agent system, which enhances the efficiency of whole network by using the asynchronous communication mode as a software agent, will play an important role in the distributed computer system in the future. However, the mobile software agent is vulnerable to attack from a malicious program running on the host and it is crux of the mobile agents' secure system to protect them against tampering by malicious hosts but secure protocols at present are unsuitable for mobile agents environments. On the basis of an onion routing technique and a smart card technique a mobile agent system using the forward-secure digital signature is proposed, and finally an analysis of its security is made.