If all you are doing is signing a second time - and not doing ANY OTHER operation - then the first signature will STILL BE VALID since you didn't touch the original page content.
-----Original Message----- From: djdjdj [mailto:d...@donaldlaing.com] Sent: Thursday, October 14, 2010 3:05 PM To: itext-questions@lists.sourceforge.net Subject: [iText-questions] Question regarding validity -- Multiple Digital Signatures. Hello, This is more of an FYI for me than an issue. I understand that when I sign a digital signature field on a pdf with itext and save it, the signature is valid. Using the library, if I reopen the file and sign another signature field through itext on the same pdf it invalidates the previous field (as it should since data has changed on the pdf since the first signature occurred). My question is regarding the first digital signature field after the second field is signed. In the validity summary it says that "this signature is invalid because there are errors in the formatting or information contained in this signature". Now, correct me if I'm wrong, but the signature should still contain the same certificate information as prior to the second field being signed. Shouldn't the validity summary state that "the revision of the document that was covered by this signature has not been altered; however, there have been subsequent changes to the document." Is this behavior to be expected? Thanks! -- View this message in context: http://itext-general.2136553.n4.nabble.com/Question-regarding-validity-Multiple-Digital-Signatures-tp2995848p2995848.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today. http://p.sf.net/sfu/beautyoftheweb _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions 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 ------------------------------------------------------------------------------ Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions 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
