One can add server certificates to the UBIK Android application (since version 2.3.1) in addition to the pre-installed certificates, using a button in the Info Activity.
Copy the certificate to your device's SD card where you can find it easily.
Open the UBIK Android application.
Press the Home button in the Action Bar.
Press the Info button in the drop-down menu.
In the Info Activity, press the Install Certificate button.
Select a file browser in order to select the certificate file.
Choose the certificate file you earlier copied to the device's SD card.
If the adding was successful, a Toast message confirming the installation will appear. Else, the Toast's text will indicate an error.
The certificate will be stored in a BouncyCastle keystore on the device's file system (path: SD-Card/UBIK/Certificates).
This means you can copy this keystore and reuse it on another device by pasting it there!
The certificate has to be provided as *.cer file
A file browser app has to be installed on your device in order to select the certificate file from the SD-card.
The certificate will remain on the device even if the application is reinstalled.
Web
Install Root Authority Certificate
If the client connects to a webservice, it needs to check if the connection can be established by fullfilling a root authority certification. Therefore the certificate of the root authority has to be installed.
To import the certificate, start the certificate manager by entering Manage computer certificates in the Windows 8 Start Screen (alternatively, start the program certmgr):
Go to section Trusted Root Certification Authorities and open the context menu.
Click on All Tasks
Use Import... to import the Root Certificate provided as *.cer file.