Research on Java Bytecode Parse and Obfuscate Tool

The compiled Java class file is not really binary files, it´s just a kind of in-between code. This makes it possible for hackers to decompile the java class file, and in fact the decompiled file is almost the same as the original one. So it´s very hard to protect the java application program, and there´s a big issue about the security of java class file. This paper treated protecting software and using more costly forms of reverse engineering as the target, and deeply researched reverse engineering and code obfuscation about defense and attack. A prototype of Code obfuscation system (JOT) based on Java byte code is realized.