[jira] [Commented] (PDFBOX-3548) Adobe Reader fails to detect PDFBox-generated signature of specific PDF

["Marco Monacelli (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PDFBOX-3548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15632097#comment-15632097 ] 

Marco Monacelli commented on PDFBOX-3548:
-----------------------------------------

The problem not are on subfilter, ETSI.CAdES.detached are subfilter for PADES-BES level signature and 90% of our signatur are Pades-BES. 

we loaded a file that works well done with the same procedure
Only diff vs standard signature are additional filed on signature dictionary "biometric_data".

if open UnixSignature1.pdf with Acrobat XI is correct, recognize the signature and if save a file, it are identical of original.
If open UnixSignature1.pdf with current Acrobat Reader DC in not recognize a signature end if save a file are serialize only original document.

The most imporant question is, why the UnixSignature1 is not recognized and UnixSignatureWorkFine created with some procedure is recognize ?

It could be a symptom of some inconsistency.






> Adobe Reader fails to detect PDFBox-generated signature of specific PDF
> -----------------------------------------------------------------------
>
>                 Key: PDFBOX-3548
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-3548
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Signing
>    Affects Versions: 2.0.3
>         Environment: Java 1.8 Linux Certos 6.
>            Reporter: Marco Monacelli
>            Priority: Blocker
>         Attachments: Original.pdf, Original_signed.pdf, UnixSignature.pdf, UnixSignature1.pdf, UnixSignatureWorkFine.pdf
>
>
> We use PDFBox to generate signatures. We have no problem with the majority of PDF.
> But we have a PDF that produces an unexpected result.
> If I open the file with PDFBox is signed, if I open it with Acrobat does not appear signed. as if acrobat ignore revisions.
> We enclose the original file and file the signed file.



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