TWiki::Configure::Checkers::CertificateChecker
This checker validates files that contain X.509 certificates, such as for the S/MIME signatures and for the Tasks framework.
It must be subclassed for the various certificate types, as the requirements are slightly different.
$valueObject
- configure value object
$usage
- Required use (email, client, server, clientserver)
Returns empty string if OK, error string with any errors