Red Hat Certificate System fully supports UTF-8 characters in the CA end users forms for specific fields. This means that end users can submit certificate requests with UTF-8 characters in those fields and can search for and retrieve certificates and CRLs in the CA and retrieve keys in the KRA when using those field values as the search parameters.
Four fields fully-support UTF-8 characters:
Common name (used in the subject name of the certificate)
Organizational unit (used in the subject name of the certificate)
Additional notes (comments appended by the agent to the certificate)
This support does not include supporting internationalized domain names, like in email addresses.