proguard-example.xml

            <plugin>
              <groupId>com.github.wvengen</groupId>
              <artifactId>proguard-maven-plugin</artifactId>
              <version>2.4.0</version>
              <executions>
                <execution>
                  <phase>package</phase>
                  <goals><goal>proguard</goal></goals>
                </execution>
              </executions>
              <configuration>
                <obfuscate>true</obfuscate>
                <options>
                  <option>-target 1.6</option>
                  <option>-verbose</option>
                  <option>-dontnote</option>
                  <option>-dontshrink</option>
                  <option>-dontoptimize</option>
                  <option>-dontpreverify</option>
                  <option>-dontskipnonpubliclibraryclasses</option>
                  <option>-dontskipnonpubliclibraryclassmembers</option>
                  <option>-allowaccessmodification</option>
                  <option>-repackageclasses ''</option>
                  <option>-keep public class * { public protected *; }</option>
             <!-- <option>-keep class !br.com.sicoob.idp.common.util.JasyptUtil,** { *; }</option> -->
             <!-- <option>-keepclassmembers,allowobfuscation class br.com.sicoob.idp.common.util.** { }</option> -->
                  <option>-keepattributes InnerClasses,Signature,LineNumberTable,*Annotation*,EnclosingMethod</option>
                  <option>-keepclassmembers enum * { public static **[] values(); public static ** valueOf(java.lang.String); }</option>
                </options>
                <libs>
                  <lib>${java.home}/lib/rt.jar</lib>
                  <lib>${java.home}/lib/jce.jar</lib>
                </libs>
              </configuration>
            </plugin>