Gruber, Florian (ext) schreef op 27/05/2014 16:16: > Why exactly would digital signatures in PDFs based on specs prior to v1.7 no > longer considered to be safe?
Some types of signatures have been deprecated in ISO-32000-1. Some more will be deprecated in ISO-32000-2. Some countries refuse to accept SHA-1 as hashing algorithm because serious flaws have been found. Some countries also require a minimum keylength for the encryption algoritm as computers have become more powerful over the years. To make a long story short: a digital signature that was "state of the art" 10 years ago may no longer be safe today. Please read pages 14, 25, 26 and 28 of http://itextpdf.com/book/digitalsignatures Especially the WARNINGs on page 28. ------------------------------------------------------------------------------ The best possible search technologies are now affordable for all companies. Download your FREE open source Enterprise Search Engine today! Our experts will assist you in its installation for $59/mo, no commitment. Test it for FREE on our Cloud platform anytime! http://pubads.g.doubleclick.net/gampad/clk?id=145328191&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
