I have a pdf with a valid signature (written with my own routines). Adobe says "valid".
If I add another signature, the Adobe acrobat (newest version) shows first sig invalid.
My verification says "valid", Foxit-Reader says "valid", the DSS Demonstration WebApp page from the EU says "valid".
So, what can cause the "invalid"-info in Adobe?
The pdf was created with libreoffice writer 7.4
The xref of the original pdf is not segmented
I didn't make any changes between the signatures
The first signature don´t use restrictions (DocMDP, etc), also the pdf didn't
If I click "view signed version" and the report I got some issues (see picture)
Can someone give me a hint/ where I need to look at?