Verify a .cdut
Choose a .cdut file. It is checked here, in memory, against the university's published key, and nothing is kept: not the file, not a copy, not its contents. The answer names every reason.
From the command line
curl -sS -X POST --data-binary @credential.cdut -H 'Content-Type: application/cdut' https://conquestdesigner.com/cdut/verify
Or offline, with nothing sent anywhere: conquest cdut verify credential.cdut.