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https://issues.apache.org/jira/browse/PDFBOX-3227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15137291#comment-15137291
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Tilman Hausherr edited comment on PDFBOX-3227 at 2/8/16 5:38 PM:
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I think this is a misunderstanding... to be signed, the PDF must exist as a
byte sequence. What saveIncremental does is to append stuff to such a byte
sequence. This sequence doesn't exist before a classic save.
The API has this: "Save the PDF as an incremental update. This is only possible
if the PDF was loaded from a file."
was (Author: tilman):
I think this is a misunderstanding... to be signed, the PDF must exist as a
byte sequence. What saveIncremental does is to append stuff to such a byte
sequence. This sequence doesn't exist before a classic save.
> Impossible to sign merged PDFs through stream only
> --------------------------------------------------
>
> Key: PDFBOX-3227
> URL: https://issues.apache.org/jira/browse/PDFBOX-3227
> Project: PDFBox
> Issue Type: Bug
> Reporter: Thierry Boschat
>
> Hello,
> Recently, I upgraded from 1.8.1 to 2.0.0-RC3 because PDFBOX-2716 was fixed.
> Now I've got another problem and I don't think it's a misunderstanding of the
> API.
> - If I sign a PDF then save it that works.
> - But If I merge 2 PDFs with (PDFMergerUtility). The two pages are
> well-merged (because pdDocument.getNumberOfPages()==2) but once I use
> saveIncremental. It results in a PDF well signed but with only one of the two
> pages.
> - If I save the merged PDF then reload it and sign it works.
> Is it possible to sign a merged PDF through stream only?
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