Can OFSC apply base64 encoding?

Summary:

Is it possible to apply base64 encoding to a value in OFSC?

Content (please ensure you mask any confidential information):

We have a custom property value that we apply as criteria in the URL of an external application plugin. We now need to change the normal value to a base64 encoded value. Can the encoding be done within OFSC?

Version (include the version you are using, if applicable):

24A (with MP15)

Code Snippet (add any code snippets that support your topic, if applicable):