ArmA: Addon Signatures
Addon signatures as a way to reduce cheating in Armed Assault. They are used to detect any modifications to any data files which are made by anyone else but the addon creator. They are based on strong cryptographic principles (private/public key pairs), therefore hacking around them is very hard.
Controlling addon signature verification on the server
If a server admin decides addon signatures should be verified, he should add a following line to the server.cfg file: