中文摘要：

活动代理人的安全直接在电子商务决定它的用法宽度。特别，现在正在变得保护用户的私人信息更重要；未来。有安全认证基础结构的匿名的活动代理人安全机制因此在纸基于 PKI (公钥基础结构) 被建议。多代理人系统被 java 语言规划；每个代理人必须在在网里工作前在 CA (证书权威) 登记自己；表示他 temptly 被生产的合法身份；使用仅仅一次。CA 保证所有代理人参加通讯或贸易的身份合法。并且每用户代理人身份仅仅被使用一次它让另外的代理人不能译解用户的私人信息。多代理人系统的安全机制实现匿名，完整，活动代理人的数据机密基于 MH (多重跳跃) 完整保护问候到 PKI 限制。

英文摘要：

The security of mobile agent directly decides its usage width in e-commerce. Especially, to protect users＇ private information is becoming more important now and future. So an anonymous mobile agent security mechanism with the secure authentication infrastructure based on PKI （public key infrastructure） is proposed in the paper. The multi-agent system is programmed by java language and every agent must register itself in CA （certificate authority） before working in the net and express his legit identity which is temptly produced and used only once. The CA ensures the legal of all agents＇ identity which take part in communicaiton or trade. And every user agent identity only is used once which makes other agents cannot decipher users＇ private information. The security mechanism of the multi-agent system implements anonymity, integrity, data confidentiality of mobile agent based on the MH（multiple hop） integrity protection regard to PKI limit.