中文摘要：

软件混淆技术已经广泛应用于抵制逆向工程和重组工程．文中从混淆技术的历史发展角度对现有的混淆技术理论、算法、攻击模式和评估进行了综述，将Java程序混淆算法分为类内混淆和类间混淆两个类别，并对其中的各类算法进行详尽的阐释．最后在现有工作的基础上，展望了软件混淆技术未来的发展与研究方向．

英文摘要：

Obfuscation techniques have been widely and re-engineering attacks. From the view of the applied in the defenses of reverse engineering development of obfuscation, we briefly discussed the principles, algorithms, different kinds of attack approaches and evaluating standard. Java program obfuscation algorithms can be divided into two types： One is obfuscation within a class; the other is obfuscation between classes. Finally, based on the survey of these obfuscation techniques, the future research of Java program obfuscation is also stated.