When attempting to import a certificate, we're presented with the following error through the AdminUI:
Error: System exception trying to load keystore entries. For input string: "<random long string of characters>"
Release: 12.8x
Component : SITEMINDER - POLICY SERVER
An unknown problem was caused by the way the certificate in question was imported. The certificate was imported via a custom script using the API, therefore, no validation was performed on the imported data.
Use XPSExplorer to identify and delete the the certificate associated with the error message, after which the UI displayed/managed certs as expected.
The Policy Server's smkeytool command can be used as an additional troubleshooting aid for problems with the CDS.
Use the following syntax:
smkeytool -ListCerts