We need a way to check if a test signature is valid or not. Best would be to have a way to upload the signature file and then present some information.
step1: upload signature file
step2: in background, fetch result reporting file, check signature, display information about validity of signature and meaningfull error messages in case the signature is not valid
The tool should be located in the assessment tool on course nodes that have the signature enabled. The tool just checks if the signature is valid, no need to restrict it to the given course node.
The tool should also be available in the admin environment where the signature feature is enabled/disabled.