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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (Jira)" <ji...@apache.org> on 2021/04/30 17:33:00 UTC
[jira] [Updated] (PDFBOX-5182) Detect whether a Signature is out of
Date
[ https://issues.apache.org/jira/browse/PDFBOX-5182?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tilman Hausherr updated PDFBOX-5182:
------------------------------------
Affects Version/s: (was: 3.0.3 JBIG2)
> Detect whether a Signature is out of Date
> -----------------------------------------
>
> Key: PDFBOX-5182
> URL: https://issues.apache.org/jira/browse/PDFBOX-5182
> Project: PDFBox
> Issue Type: New Feature
> Components: Preflight
> Reporter: Ranjeet Kuruvilla
> Priority: Major
>
> Acrobat can detect, if a Signature is invalid. In particular one can see, if a Signature is outdated. That can happen, when a person signs a Document and then changes a Textfield or a Checkbox or any other field.
>
> It would be great, if one could detect, whether one could use PDFBox to detect whether a Signature has been invalidated.
>
> I attached the sign one can see in Acrobat once a Signature is invalidated !Invalid Signature.png!
> .
>
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