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https://issues.apache.org/jira/browse/PDFBOX-1780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13822986#comment-13822986
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Thomas Chojecki commented on PDFBOX-1780:
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Big thanks for this patch.
> previous revision is damaged after signing
> ------------------------------------------
>
> Key: PDFBOX-1780
> URL: https://issues.apache.org/jira/browse/PDFBOX-1780
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing, Signing, Writing
> Affects Versions: 1.8.2
> Reporter: vakhtang koroghlishvili
> Assignee: Andreas Lehmkühler
> Priority: Critical
> Fix For: 1.8.3, 2.0.0
>
> Attachments: fixed.jpg, fixed.patch, original-signed -[FIXED].pdf,
> original-signed [DAMAGED].pdf, original-signed [ORIGINAL].pdf
>
>
> Ihave PDF file which was signed by some other application. When I try to
> sign it with PDFbox, previous revision is damaged. I have discussion at
> stackoverflow, with Michael Klink.
> http://stackoverflow.com/questions/19903884/pdf-document-is-modified-by-another-revision/19905271?noredirect=1#19905271
> when we see some changes merely was structural. Some changes was just
> rounding problem - PDFBOX-1778.
> When I test, problem of damaged signature was caused from structural change
> [when there must be direct reference, there was indirect reference and etc..]
> So we solve that problem. I will upload damaged PDF document, fixed pdf, and
> the patch too.
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