本文提出了一种保护移动Agent 不受Agent 平台攻击的旅行协议。该协议基于Agent旅行的历史记录,在一定的条件下允许Agent 所有者检测对Agent 代码、状态和执行流的非 法篡改。这个协议具有很高的安全性能,能够检测旅行途中的Agent 平台对Agent 数据的篡改,能够防止重播攻击。 关键词:移动Agent;安全性;安全协议 Abstract: This essay provide a secure protocol for agent moving and expatiates its particular procedure. This protocol which is based on the agent travel history, allows the agent owner to detect the illegal alteration to the agent's code、state and control flow in some condition. It's rather secure, can be used to detect alteration to the agent and to prevent from "copy and replay" attack. Keywords: Mobile Agent; Security; Secure Protocol