Create digital signatures for PDF documents with PHP


Digital sign PDF documents with PHP

Digital Signature With a Timestamp

This demo digital signs the document and adds an additional time stamp signature from an external time stamp server into the signature. The communication between the component and the time stamp server conforms to RFC 3161.

Select or upload a file

The uploaded files are bound to your browser session and are not accessible by any other user. They will get deleted after 24 hours automatically.

Time stamp server:

We use certificates from GlobalSign for demonstration. If you want to validate the signature in another viewer application, make sure that the root certificate is added as a trusted identity. Furthermore you need to have the root certificate of the timestamp authority (Freetsa CA Certificate or Test e-Szigno Root CA 2017) added.