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
