摘要： 移动代理代码在目标主机代理平台上加载运行中，存在着其意图易被探测、泄露、修改的安全隐患。论文通过采用重建虚拟机的系统类加载器和自定义类加载器的方法解决这一安全问题。

关键词: 移动代码；JVM；类加载器

Abstract: There are some security threats during mobile agent codes are loaded or running on destination hosts. The threads are detecting, draining or altering the agents' intention. In order to protect the code from being detected or changed, this paper taks measures to assure the original code security by reconstructing the JVM system classloader and self-defining classloader in the thesis

Key words: Mobile code; JVM; Classloader