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 signaturesWritten in C# using open source libraries Itextsharp and Bouncycastle
App similar to http://www.codeproject.com/useritems/Esignature.asp
but with timestamp capabilitySimilar JAVA apps available as open source but prefer native C# app.
reference:
http://security.polito.it/ts/
http://www.codeproject.com/useritems/Esignature.asp
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?
November 11th, 2007 07:07
Hi,
could you share your source code for timestamping with ItextSharp?
Thanks for your help
Henri
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
June 25th, 2008 07:51
Could you share your source code??
thanks in advance
October 21st, 2008 06:45
Hi Ruby
Please share your source,
Or you can send me the source on Email
10x
Raniel
March 22nd, 2009 04:36
Hi,
Could you please share a sample/source code in C#.net ?
Thanks,
Suba
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