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https://issues.apache.org/jira/browse/PDFBOX-4556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16861197#comment-16861197
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Tilman Hausherr commented on PDFBOX-4556:
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No, BC is not used for the visual representation, BC is for the crypto stuff
both when visual and not visual.
C# is not supported by the PDFBox team. See also your previous issue why
signing doesn't work on C# with IKVM. And why you shouldn't use IKVM in a
project at all.
The CreateVisibleSignature and CreateVisibleSignature2 examples are what you
should follow. The second one is easier to understand. Have a look at the
method {{createVisualSignatureTemplate}}. This creates a template that is then
passed to {{signatureOptions.setVisualSignature()}}. That is what you did, but
at least one of your modifications was wrong, see my comment. You should start
with the unmodified example and get that one to run.
However the CreateVisibleSignature2 example doesn't exist in 1.8. There are no
plans to port it to 1.8. (It might still work, but one doesn't know for sure)
The 1.8 version is only maintained, not improved. If you insist on using 1.8
then you should use the CreateVisibleSignature example that exists, i.e. see if
it runs or not. It is somewhat inflexible (doesn't support text in signature)
and hard to understand / debug, due to the usage of design patterns.
> how the visual representation of the signature is achieved
> ------------------------------------------------------------
>
> Key: PDFBOX-4556
> URL: https://issues.apache.org/jira/browse/PDFBOX-4556
> Project: PDFBox
> Issue Type: Wish
> Components: .NET
> Affects Versions: 1.8.16
> Reporter: bal
> Priority: Major
>
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