Obfuscate symmetric encryption key

[robobrobro]

It's a huge (8192-byte) string in the library right now. That's dumb.

[robobrobro]

Just store the key (and IV) as binary instead. OpenSSL's crypto init functions expect it anyway.

However, don't store the key in the same place every time. The source code is public, so everyone will know where it is! Instead, somehow randomize the key's location for every build.

Actually, it's pointless to store the key in the library as long as the code is open source. Perhaps resource encryption should be abandoned and replaced with compression.