When you run VMware VCAC Application Director CLI (darwin-cli.jar) you get "peer not authenticated" like reported here. This typically (almost always) happens when you are not using the darwin-cli.jar downloaded from the target Application Director server. The resolution is to download it from the correct Application Director server and retry.
The darwin-cli.jar has embedded public certificate of a specific Application Director server from which it was downloaded. For this reason, you cannot use one jar to target multiple servers even though the size of jar file is exactly the same.