title: How does DexGuard encrypt classes?
body: <p>I want to check how DexGuard works but it seems that it doesn't have a free trial version.</p>
  
  <p>Can DexGuard encrypt an Android application? Or does it simply obfuscate the code? How does DexGuard encryption work? If you could provide code from a sample application run with DexGuard before and after decompilation, it would be great.</p>