Stefan Geelen created PDFBOX-5377:
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             Summary: pDAcroForm.flatten() does not remove /SigFlags in 
/Catalog object
                 Key: PDFBOX-5377
                 URL: https://issues.apache.org/jira/browse/PDFBOX-5377
             Project: PDFBox
          Issue Type: Bug
          Components: AcroForm
    Affects Versions: 2.0.25
            Reporter: Stefan Geelen


A PDF document contains Signature fields (X.509) with /SigFlags 1 indication in 
the /Catalog object.

When the document is flattened, this signature image remains in the document 
and underlying object is removed. Perfect!

But the SigFlags in /Catalog object is not removed although this has no value 
anymore and prevent the document being correct signed/certifiied afterwards (at 
least with our software).

Can the SigFlags in /Catalog object be removed or its value be changed to 0 so 
this corresponds to the content of the document ?

 



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