Обфускация при сборке

build.xml

@@ -13,13 +13,16 @@
     
     <target name="package-for-store" depends="jar">
         <property name="store.jar.name" value="${application.title}"/>
+        <property name="proguard.jar.path" value="store/proguard.jar" />
  
         <property name="store.dir" value="store"/>
         <property name="store.jar" value="${store.dir}/${store.jar.name}.jar"/>
+        <property name="obfuscated.jar" value="${store.dir}/${store.jar.name}-obfuscated.jar"/>
 
         <echo message="Packaging ${application.title} into a single JAR at ${store.jar}"/>
 
-        <delete dir="${store.dir}"/>
+        <delete file="${store.jar}"/>
+        <delete file="${obfuscated.jar}"/>
         <mkdir dir="${store.dir}"/>
 
         <jar destfile="${store.dir}/temp_final.jar" filesetmanifest="skip">
@@ -37,7 +40,26 @@
         </zip>
 
         <delete file="${store.dir}/temp_final.jar"/>
+        
+        
+        <echo message="Obfuscating ${store.jar}..." />
+        
+        <taskdef resource="proguard/ant/task.properties"
+                 classpath="${proguard.jar.path}" />
+
+        <proguard configuration="proguard.properties">
+
+            <injar  file="${store.jar}" />
+            <outjar file="${store.dir}/temp_final.jar" />
+
+            <libraryjar path="${javac.classpath}" />
+            <libraryjar file="${java.home}/lib/rt.jar" />
+
+        </proguard>
+        
+        <move file="${store.dir}/temp_final.jar" tofile="${obfuscated.jar}"/>
     </target>
+    
     <!--
 
     There exist several targets which are by default empty and which can be 

proguard.properties

@@ -0,0 +1,46 @@
+-target 1.8
+
+-printmapping store/out.map
+-printusage store/out.txt
+-keepattributes Signature,InnerClasses
+-keepattributes *Annotation*
+
+-dontwarn okio.**
+-dontwarn okhttp3.**
+
+-keepclasseswithmembers public class * {
+    public static void main(java.lang.String[]);
+}
+
+-keep class okio.**
+-keep class okhttp3.** { *; }
+-keep interface okhttp3.** { *; }
+
+-keepattributes Signature
+-keepattributes *Annotation*
+
+-keepclassmembers enum  * {
+    public static **[] values();
+    public static ** valueOf(java.lang.String);
+}
+
+-keep class * extends javax.swing.plaf.ComponentUI {
+    public static javax.swing.plaf.ComponentUI createUI(javax.swing.JComponent);
+}
+
+-keepclasseswithmembers,includedescriptorclasses,allowshrinking class * {
+    native <methods>;
+}
+
+-keep public class * implements com.annimon.ownlang.lib.modules.Module
+
+# Soft obfuscation
+-keep public class * {
+    public protected *;
+}
+
+# Hard obfuscation
+#-optimizationpasses 9
+#-allowaccessmodification
+#-dontusemixedcaseclassnames
+#-repackageclasses ''