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signature-key.pdf has incorrect signature
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I tried to verify PDF with digital signature (, linked from ( and looks like it is not valid.

I tried 3 methods

  • Software from my QES vendor - reports that signature is present but not valid
  • online tool - reports certificate as revoked?
  • Adobe Reader - reports file as modified after signing

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werner added a subscriber: werner.

Your tools don't use the chain validation model which is required for QES (at least according to German laws). A signature is still valid even if the certificate has been revoked. You need to consider the context and the time the certificate was revoked.

(I lost my wallet once, revoked all cards before it showed up with all content at the lost+found).

werner claimed this task.