How to secure pdf file exported from Crystal Report.

[Simon Says]

Hi all,

I've a vb application that uses the crystal report to display some reports.
User have the option to export the report to pdf format. My question is that
the report that the users export out, I do not want to them to be able to do
any changes (i.e. convert to word doc, do the changes and convert back to
pdf).

I understand that the crystal report is not able to accomplish this. Can
anyone please advice? I tried looking at the Adobe Acrobat SDK, but I think
that it might take me a least a month to figure it out :-(

Thanks,
Simon

 

[Guest]

I understand that the crystal report is not able to accomplish this.
Can anyone please advice? I tried looking at the Adobe Acrobat SDK,
but I think that it might take me a least a month to figure it out :-(

I don't believe Crystal can... but you can use iText (open source PDF
component) to read in an existing PDF and sign it.

http://itextpdf.sourceforge.net/howtosign.html

..NET version:

http://itextsharp.sourceforge.net/

 

[Simon Says]

Hi Spam Catcher,

Thanks for your reply. Will this able to prevent user from able to edit the
pdf document? Also, I see the code is in C#, will I be able to use in
vb.net?

Thanks,
Simon

 

[Guest]

Hi Spam Catcher,

Thanks for your reply. Will this able to prevent user from able to
edit the pdf document? Also, I see the code is in C#, will I be able
to use in vb.net?

C# and VB.NET are both languages of the .NET platform. So yes, while the
syntax is different, the code is compatible.

I believe once you signed a PDF, the user cannot edit the file. If they do,
they'll render the signature invalid.