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1. #Jar2exe serial how to#
2. #Jar2exe serial update#
3. #Jar2exe serial full#
4. #Jar2exe serial software#
5. #Jar2exe serial code#

This approach is somewhat similar to "isolating java programs from the server", which can be seen as "isolating" the code and data to be protected into the dynamic library, the difference is that it can be used in a stand-alone program.

#Jar2exe serial update#

If the tool update is lagging or you need specific The version of JRE may not be supported by this tool.Įxcelsior JET belongs to this type of tool.įeatures: process sensitive methods and data through the jni method. Compiled hybrid.ĭisadvantages: Due to the difference from the general JRE and the complexity of java application, not all jars in the java program can be fully protected only one operating environment provided by this tool can be used.

#Jar2exe serial full#

The representative is GNU's gcj, which can compile java code completely in advance, but gcj has many limitations, such as: JRE 5 cannot be fully supported, and JRE 6 and later versions are not supported.ĭue to the complexity of the java platform, it is very difficult to support the full advance compilation of the latest java version and JRE in a timely manner, so such tools often take a flexible approach, and the place to use instant compilation is still to be used. This method can very effectively protect the java code, and the program starts a little faster than the general JVM. This way can effectively protect the java code.ĭisadvantages: Java bytecode can be intercepted by replacing the java class or virtual machine dynamic library related to class loading in the JRE package.įeatures: statically compile java code into local machine code, away from the universal JRE. To play a protective role, you must customize the local code executor to customize the ClassLoader and encrypt and decrypt The related classes and supporting documents are also protected.

This feature limits the scope of use of this method the client is always a weak link because the logic is exposed, so security authentication is generally required when accessing the interface.įeatures: custom ClassLoader, class files and related files are encrypted, and ClassLoader decrypts related files and loads classes at runtime. The disadvantage is that it must be a client / service model.

This method can better protect the java code in the application of the client / service model. can not be confused due to the restrictions of use requirements.įeatures of isolating java program from the server : put the java program on the server, so that users can not access the class file and related supporting files, the client only access through the interface. There are many such obfuscator tools, and they are also very effective.ĭisadvantages: Although the obfuscated code is not easy to read after decompilation, but for experienced people or spend more time, you can still find or calculate the sensitive content hidden in your code, and in many applications not all code can be Confused, often some key libraries, class names, method names, variable names, etc. Using these tools is a good choice.įeatures: use one or more processing methods to obfuscate the class file and java source code to generate a new class, so that the obfuscated code is not easily decompiled, and the decompiled code is difficult to read and understanding. If it is just for the convenience of use and release, you don't need to protect the java code. The exe runtime temporary directory generated by jsmooth is in the directory where the exe is located or the user's temporary directory the exe runtime temporary directory generated by exe4j is in the user's temporary directory the exe generated by NativeJ is directly opened with winrar, and then repaired into one jar file, you get the original file. These programs packaged into exe will release the jar file to a temporary directory when they are run, which is easy to obtain.Ĭommonly used tools are exe4j, jsmooth, NativeJ, etc.

#Jar2exe serial how to#

The following from a technical perspective on common protection measures and common tools to see how to effectively protect java code:įeatures of packaging java into exe : The jar is packaged into an executable file for easy use, but there is no protection for the java program.ĭon't think that the generated exe has the same effect as a normal executable file. Therefore, the real problem of whether the Java program is shirtless or fully armed In front of java developers, in this case, from the perspective of both developers and users, it is very necessary to protect the java program.

#Jar2exe serial software#

The Java code often contains some very sensitive information, some of which are related to the interests of developers, and some may be related to the interests of software users because of different use environments.