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Digital Signature and Timestamp to PDF Documents with iTextSharp

Today, I just finished a bid(project) from RAC, that is “Digital Signature and Timestamp to pdf document with iTextSharp”.
the requirement is:

PDF Sign and TimeStamp

Provide a fully functional desktop application and source code that can:
Sign a PDF file from user certificate (.pfx)
Add timestamp (RFC 3161) from designated TSA
Save signed pdf in designated file
File can be verified with Adobe Acrobat Reader
Support for multiple signatures

Written in C# using open source libraries Itextsharp and Bouncycastle

App similar to http://www.codeproject.com/useritems/Esignature.asp
but with timestamp capability

Similar JAVA apps available as open source but prefer native C# app.

screenshot.jpg
reference:

      http://security.polito.it/ts/

      http://www.codeproject.com/useritems/Esignature.asp

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This entry was posted on Wednesday, August 22nd, 2007 at 10:38 pm and is filed under .NET, English, My Software, PDF, iTextSharp(iText#). You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

8 Responses to “Digital Signature and Timestamp to PDF Documents with iTextSharp”

  • 1
    anlemaco
    October 31st, 2007 05:21

    Mr RubyPDF,
    You can share the source code of this app (Digital Signature and Timestamp to PDF Documents with iTextSharp) ?
    where can i download it?

  • 2
    hbouzagl
    November 11th, 2007 07:07

    Hi,
    could you share your source code for timestamping with ItextSharp?
    Thanks for your help

    Henri

  • 3
    victordomain
    November 27th, 2007 22:54

    Hello RubyPDF,

    Could you share your source code for timestamping with ItextSharp?

    I cannot find the link for this example.

    Victor

  • 4
    azubizarreta
    June 25th, 2008 07:51

    Could you share your source code??
    thanks in advance

  • 5
    rani109
    October 21st, 2008 06:45

    Hi Ruby
    Please share your source,
    Or you can send me the source on Email

    10x

    Raniel

  • 6
    suba_irs
    March 22nd, 2009 04:36

    Hi,

    Could you please share a sample/source code in C#.net ?

    Thanks,
    Suba

  • 7
    chinatsa
    April 25th, 2009 15:13

    hi,
    China TSA: http://WWW.TSA.CN time stamp url:http://www.tsa.cn/tsa/pub
    you can get User/Pwd at: http:// http://www.tsa.cn

  • 8
    rhut
    April 21st, 2010 22:45

    hello,
    I am also interested.
    I managed to generate PDF and sign it. Now I’d like to introduce the time stamp.

    thankss

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