B4J Question Obfuscating of library methods

Discussion in 'B4J Questions' started by JackKirk, Oct 13, 2019 at 1:01 AM.

  1. JackKirk

    JackKirk Well-Known Member Licensed User

    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...
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