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Adding digital signature
https://forum.pdfsharp.net/viewtopic.php?f=2&t=4483
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Author:  pvt.peter [ Thu Oct 05, 2023 2:54 pm ]
Post subject:  Adding digital signature

Hi,

I would like to add digital signature to my document in the version of 6.0.0-preview-3 but I couldn't find an option for that.
PdfSignatureHandler and PdfSignatureOptions classes are completely missing from this release.
How can I digitally sign my document in 6.0.0?

Thank you for your answer.

Author:  TH-Soft [ Thu Oct 05, 2023 7:55 pm ]
Post subject:  Re: Adding digital signature

pvt.peter wrote:
PdfSignatureHandler and PdfSignatureOptions classes are completely missing from this release.
So far, those classes were never included with any release of PDFsharp.

Author:  pvt.peter [ Fri Oct 06, 2023 8:31 am ]
Post subject:  Re: Adding digital signature

Oh, yes, you are right.
In the meantime, I found out that we are using a version that was not included in the official product, unfortunately.
Here is the discussion about this modification: Support of digital signatures #10

Author:  jraff [ Fri Oct 20, 2023 2:45 pm ]
Post subject:  Re: Adding digital signature

Hi,

I started porting the 1.5 pull request #10/#11 you refer to on the new PdfSHarp 6 version and here is the new pull request:
https://github.com/empira/PDFsharp/pull/48

There are minor changes in BouncySigner (it now uses BouncyCastle 2) and in ISigner signature.

It's still draft though: appearance seems to not display well.

Let me know any suggestions.

Author:  jraff [ Tue Nov 07, 2023 4:39 pm ]
Post subject:  Re: Adding digital signature

Digital signature of PDF is now available in this fork package:
https://www.nuget.org/packages/PDFsharp-extended/

With a limitation though: it cannot yet sign already signed documents.

Author:  aamirmunir [ Mon Jan 01, 2024 5:53 pm ]
Post subject:  Re: Adding digital signature

jraff wrote:
Digital signature of PDF is now available in this fork package:
https://www.nuget.org/packages/PDFsharp-extended/

With a limitation though: it cannot yet sign already signed documents.



I just want to add a signature field, not the signing itself. How I can achieve that?

Author:  jraff [ Tue Jan 02, 2024 8:34 am ]
Post subject:  Re: Adding digital signature

aamirmunir wrote:
jraff wrote:
Digital signature of PDF is now available in this fork package:
https://www.nuget.org/packages/PDFsharp-extended/

With a limitation though: it cannot yet sign already signed documents.



I just want to add a signature field, not the signing itself. How I can achieve that?


See my answer on the pull request.

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