Huseyin ABANOZ

Introduction Obfuscation is the act of reorganizing bytecode such that it becomes hard to decompile. Many developers rely on obfuscation to save their sensitive code from undesired eyes. Publishing jars without obfuscation may hinder competitiveness because rivals may take advantage of easily decompilable nature of java binaries. Objective Spring Boot applications make use of public interfaces, annotations which makes applications harder to obfuscate. Additionally, maven Spring Boot plugin creates a fat jar which contains all dependent jars. It is not viable to obfuscate the whole fat jar. Thus obfuscating Spring Boot applications is different than obfuscating regular java applications and requires a suitable strategy. Audience Those who use Spring Boot and Maven and wish to obfuscate their application using Proguard are the target audience for this article. Sample Application As the sample application, I will use elastic search synch application from my G...

Warning!  This article is not up-to-date anymore and might be inaccurate. Please refer to following post. http://huseyinabanozeng.blogspot.com/2018/07/obfuscating-spring-boot-projects-using.html This article is an extension to article named  Multi Module Maven Project Using Assembly Plugin . Assembly module is added with obfuscation configuration. Obfuscation is a technique to make byte code harder to reverse engineer to protect source code. In Java word there are not many freeware obfuscation tools. One of the well known obfuscation tools is named proguard. It has a nice maven plugin. But I could not make proguard-base 4.10 work. It gave ClassNotFoundErrors due to worngly obfuscated class names. Another option is yguard from  yworks . Yguard has an ant task and works with maven ant-run plugin as well. My experience with yguard is pretty well, it works just fine. Below is the pom file for assembly module with obfuscation configuration. <?...

  Maven is a very flexible and powerful technology. Anyone in Java software industry is suggested to make use of it. This document will describe multi module maven project. Assembly plugin is used to merge outputs of modules into one jar. Provided project is a full fledged Java project which uses spring framework for dependency injection, hibernate for ORM. The project comes with several basic classes to make use of the project architecture and show use of some usefull patterns. All project files are attached to the end of this document. 1.        Parent Pom Lists all submodules and uses maven-assembly-module. <? xml   version = "1.0"   encoding = "UTF-8"   standalone = "no" ?> <project   xmlns = " http://maven.apache.org/POM/4.0.0 "   xmlns:xsi = " http://www.w3.org/2001/XMLSchema-instance "           xsi:schemaLocation = " http://maven.apache.org/...