How to archive/compress art resources?

Hello, everybody,

We don't want others to "see" my art resouces(like some .png/.dds file, etc), how to compress or archive the game art resources with password protected, and these art resources archive will be uncompressed or un-archived automatically when loading the game.

Do we need to use some files under source/core/util/zip folder in engine codes? How to use these codes, and could you please provide some examples?

Thanks, very appreciated.