Dear Michael,
Thanks for your help.
Because of my dummy and leak of knowledge in LTV, would you please to show
me a simple example to sign a PDF that LTV-enabled with option 2?
Best regards,
Eric
On Fri, Dec 27, 2013 at 3:58 AM, mkl <m...@wir-sind-cool.org> wrote:
> Eric Chow wrote
> > I used the following code to add the LTV to the existed signed PDF. The
> > attached PDF is the result. But it shows "LTV not enabled ....." in the
> > Adobe Reader XI.
> >
> > test_signed_LTV.pdf (346K)
> >
> http://itext-general.2136553.n4.nabble.com/attachment/4659584/0/test_signed_LTV.pdf
>
> Your signature contains both a CRL and a time stamp both of which have
> signatures in their own right. Unfortunately the
> LtvVerification.addVerification overload you use only inspects the outer
> signatures.
>
> Thus, you have three options,
>
> 1. Include all the CRLs / OCSP responses required to verify the
> certificates
> of the outer signature, the CRL and OCSP response signatures, and
> timestamp
> already in the original signature; in this case you do not need to add
> extra
> validation related information. In your case only one CRL is embedded which
> most likely does not contain the information required for verifying the
> three signatures used.
>
> 2. Don't use CRLs, OCSP reponses or time stamps in the original signature
> but do add the whole signature chain (in your case there only is the signer
> certificate). In this case the LtvVerification.addVerification overload you
> use should add all required information.
>
> 3. Collect all validation related information required for all signatures
> already present in the PDF and in the collected information, and use the
> other LtvVerification.addVerification overload to add these information.
>
> Regards, Michael
>
>
>
> --
> View this message in context:
> http://itext-general.2136553.n4.nabble.com/LTV-problem-tp4659550p4659590.html
> Sent from the iText - General mailing list archive at Nabble.com.
>
>
> ------------------------------------------------------------------------------
> Rapidly troubleshoot problems before they affect your business. Most IT
> organizations don't have a clear picture of how application performance
> affects their revenue. With AppDynamics, you get 100% visibility into your
> Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics
> Pro!
> http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk
> _______________________________________________
> iText-questions mailing list
> iText-questions@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/itext-questions
>
> iText(R) is a registered trademark of 1T3XT BVBA.
> Many questions posted to this list can (and will) be answered with a
> reference to the iText book: http://www.itextpdf.com/book/
> Please check the keywords list before you ask for examples:
> http://itextpdf.com/themes/keywords.php
>
------------------------------------------------------------------------------
Rapidly troubleshoot problems before they affect your business. Most IT
organizations don't have a clear picture of how application performance
affects their revenue. With AppDynamics, you get 100% visibility into your
Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro!
http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk
_______________________________________________
iText-questions mailing list
iText-questions@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/itext-questions
iText(R) is a registered trademark of 1T3XT BVBA.
Many questions posted to this list can (and will) be answered with a reference
to the iText book: http://www.itextpdf.com/book/
Please check the keywords list before you ask for examples:
http://itextpdf.com/themes/keywords.php
