The service is developed by Sunet (Swedish University Computer Network) and follows the Swedish Digital Administration's framework for digital signatures for government agencies.
This is how eduSign works
You can access the signing tool via: https://edusign.ju.se
In the tool, you upload the PDF document to be signed, sign the document with your JU account and then download the signed document.
Signed documents contain both a digital signature and a last page where the information about the person who signed the document is displayed. The digital signature contains information about the digital identity used in the signing.
Validate a digitally signed document
To confirm that a digitally signed document has a signature that is genuine and that the document has not been altered after signing, eduSign’s validation service is used. The service has open access, requires no login, and is available here: https://validator.edusign.sunet.se
You can find more information about the service on the page eduSign - https://ju.se/en/it-helpdesk/faq---manuals/edusign.html