I've created a test word document using openxml. My next step is to add a digital signature at the end of the word document after a button click. Could someone if possible share a code for creating and adding a digital signature to a word file or could just refer to articles that could help me with the same. I've read questions on stackoverflow and read a few articles too but they use Microsoft.interop.office which doesn't work with my word document created by openxml. Please help if possible. Thank you in advance
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Please provide enough code so others can better understand or reproduce the problem. – Community Oct 13 '21 at 09:52
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In my searches I keep landing on your question, which suggests some awesome SEO.
Anyway, you have probably already arrived at your answer, but I have stumbled across this promising sample:
https://github.com/coatsy/SignWordDoc/blob/master/SignWordDoc/SignWordDoc/Program.cs
I'd say good job coatsy, although I've yet to try it :D Hopefully I remember to let you know how it works out.

Mark Holst
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While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes. - [From Review](/review/late-answers/31460213) – Nick Vu Apr 08 '22 at 08:49
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https://learn.microsoft.com/en-us/dotnet/standard/security/how-to-sign-xml-documents-with-digital-signatures – Mark Holst Apr 09 '22 at 09:45
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Probably mate, but it is better than nothing. The answer isn't entirely straight forward. As I said I haven't tried it out so I haven't had the opportunity to do this for myself let alone anyone else. – Mark Holst Apr 09 '22 at 09:46