B4J Question [SOLVED] Obfuscating of library methods

This question has relevance across B4J and B4A.

I am doing some security enhancements for some apps that use B4J libraries.

One of the things I am doing is reading some hex strings from a file, converting to bytes then decrypting.

I compile the app with obfuscation then use a java decompiler to look at the resulting .jar

The trouble is that, when using the java decompiler, if I search for "Decrypt" (a method in the jB4XEncryption library) it pops up large as life - pointing to the (obfuscated) variable that is the encryption key.

If I could obfuscate "Decrypt" it would make it considerably harder for a hacker.

I am not adverse to modifying the jB4XEncryption library if necessary - if I knew how.

Any suggestions?

Thanks in anticipation...