CCCV-CA
From 22C3
This wiki is provided to you via the HTTP+SSL protocol (https) which means the connection is encrypted and authenticated. Authentication is provided by a certificate which in this case is provided by the CCC (called CCCV-CA).
Some operating system (like Mac OS X) check authentication of SSL connections so it might be necessary to import and install the CCCV-CA public key. We provide it here in PEM format:
Download the file and install it (probably by double-clicking) and "trust" it to get rid of warning messages.