On the SSL tab, you can configure SSL connection settings, which might be required when connecting to an SVN Repository. For every host (and port) the table shows exactly one SSL configuration. You can Edit or Delete existing configurations.
In the configuration window for one host, you have the option to Enable Client Authentication if this is required by your SSL server. In this case choose the required Client Certificate File and enter the corresponding Client Certificate Passphrase which is used to protect your certificate. You can choose to Store passphrase on disk, but note that passwords are NOT SAFE (see Profiles)!
In the bottom of the window, the internally stored MD5 Fingerprint and SHA Fingerprint are displayed. Both fingerprints are calculated by the last certificate in the certificate chain (this is the certificate of the site you are connecting to), which is sent when connecting to the SSL server.
For the first connection to an SSL server, SmartSVN will ask if you are willing to trust the server by presenting these fingerprints. For subsequent connections, SmartSVN will check against those accepted fingerprints and will warn you in case of a mismatch.