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https://issues.apache.org/jira/browse/PDFBOX-5521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17610376#comment-17610376
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ASF subversion and git services commented on PDFBOX-5521:
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Commit 1904317 from Tilman Hausherr in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1904317 ]
PDFBOX-5521: detect and avoid old signatures in the incrementally saved part
> Signing tries to set byteRange of old signature
> -----------------------------------------------
>
> Key: PDFBOX-5521
> URL: https://issues.apache.org/jira/browse/PDFBOX-5521
> Project: PDFBox
> Issue Type: Bug
> Components: Signing
> Affects Versions: 2.0.27
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Priority: Major
> Fix For: 2.0.28, 3.0.0 PDFBox
>
>
> A long bug report on the users mailing lists leads to the finding that the
> COSWriter code hits an "old" signature that is (for whatever reason, maybe it
> was incorrectly included) present in the incremental part. The signing then
> fails because the byte range to be written is longer than the existing byte
> range.
> To avoid this, we improve signature detection by checking that the size
> indicated by byteRange is higher than the existing PDF size.
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