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https://issues.apache.org/jira/browse/PDFBOX-4907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17150022#comment-17150022
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Marco Monacelli edited comment on PDFBOX-4907 at 7/3/20, 8:03 AM:
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The original file is alterd to remove PrivacyData.

If we sign it with adobe, and resign it with pdfbox, the adobe signature is 
visible but the pdfbox signature still invisible.

 


was (Author: [email protected]):
The original file is alterd to remove PrivacyData.

If we sign it with adobe, and resign it with bdfbox, the adobe signature is 
visible but the pdfbox signature still invisible.

 

> Signature not detected by Acrobat Reader
> ----------------------------------------
>
>                 Key: PDFBOX-4907
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4907
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Signing
>    Affects Versions: 2.0.20
>            Reporter: Claudio Cheli
>            Priority: Major
>         Attachments: test_file.pdf, test_file_signed.pdf, 
> test_file_signed_with_adobe_resigned_pdfbox.pdf, 
> test_file_signed_with_adobe_resigned_pdfbox_risigned_adobe.pdf
>
>
> Hello,
> i've signed the attached pdf [^test_file.pdf] with PdfBox 2.0.20 (signed 
> document [^test_file_signed.pdf]), but Adobe Acrobat Reader doesn't detect 
> the signature.
> During the signature process there seems to be no error.



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