Java Obfuscator Features

A Java obfuscator changes Java bytecode to make the source code generated by reverse engineering much less useful to hackers and competitors. Since its release in 1997, the Zelix KlassMaster™ Java obfuscator has been continually developed to keep it at the forefront of obfuscation technology.

Advanced Java bytecode protection

In addition to its excellent first generation Name Obfuscation functionality, Zelix KlassMaster™ provides the following added Java bytecode protection:

Second generation Flow Obfuscation technology.
Innovative String Encryption technology. (We invented it.)
Integer Constant Encryption technology.
Long Constant Encryption technology.
Robust Reference Obfuscation technology which allows you to selectively obscure field accesses or method calls.
Unique Method Parameter Changing technology which dramatically hardens our String Encryption, Integer Constant Encryption, Long Constant Encryption and Reference Obfuscation functionality against being reversed.
An additional, enhanced, third generation Flow Obfuscation technology based upon the Method Parameter Changing functionality that can be used with or instead of our classic Flow Obfuscation.
Innovative Method Parameter Obfuscation technology which allows you obscure method parameter lists. (Again we invented it.)
Unique Exception Obfuscation technology.

It is Zelix KlassMaster's comprehensive Flow Obfuscation, String Encryption and Reference Obfuscation technologies that made it the first, true second generation, heavy duty Java obfuscator. It is still unmatched.

Maximized Java bytecode size reduction

As well as protecting your Java bytecode from being decompiled to comprehensible source code, Zelix KlassMaster's Name Obfuscation functionality reduces your bytecode size by reducing the size of your package, class, field and method names. Zelix KlassMaster's Trim functionality further reduces your bytecode size by removing unused classes, fields and methods.

Powerful but easy to use

Zelix KlassMaster™ provides a number of interfaces. Its easy to use GUI interface eases the learning curve for new starters. However, it is the powerful yet intuitive ZKM Script language interface that allows you to automate the obfuscation process and integrate it into your build cycle. Zelix KlassMaster™ also provides a Build Tool Interface to allow you to execute ZKM Scripts from within a build tool such as Apache Ant.

Zelix KlassMaster's unique AutoReflection™ technology solves the Java Reflection API call problem by automatically handling complicated Java Reflection API calls. This can dramatically reduce the amount of work that you have to do if you are obfuscating classes containing complex or obscure Reflection API calls.

Zelix KlassMaster's Smart Save™ technology makes the Java obfuscation process easier by simplifying the handling of JAR, resource and Enterprise Java Beans deployment descriptor files. Zelix KlassMaster's default name exclusions provide automatic support for Serialization, RMI & JavaBeans and support for Java ME & JEE applications. Also, it supports Incremental Obfuscation by ensuring consistent renaming of objects and consistent flow obfuscation across your releases.

Finally, Zelix KlassMaster™ helps you debug your beta releases with its unique Line Number Scrambling technology. This technology allows you to determine real line numbers from stack traces reported by your beta test customers without reducing the level of your code protection. It can save your developers weeks of guess work. Zelix KlassMaster™ also provides the GUI Stack Trace Translate tool to make deciphering obfuscated stack traces effortless.

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