Read and write binary files

Is it possible to zip/compress assets files into binary or .bin format through Actionscript or AIR? The compressed file will be in binary and can only be read by Actionscript which then parses the file.

Right now I am only able to read/write zip files using nochump’s amazing library. I tried using AIR to write the bytes to disk and save it as filename.bin but I am still able to read filename.bin using 7-zip.

The objective is to protect my asset files as much as possible. Are there any other ways?