You can't sign the same byte range more than once in a PDF. The concept of "parallel signatures" is not supported. Instead, PDF uses a "serial signature" model instead.
Leonard -----Original Message----- From: Javadoc [mailto:[email protected]] Sent: Monday, October 26, 2009 8:16 PM To: [email protected] Subject: [iText-questions] Creating the same PDFSignatureAppearance twice.... Hello all, I am in a situation where I need to create the PDFSignatureAppearance for a PDF I am signing twice. This is because I am having to read the actual PDF file twice. I need the signature to have the same getRangeStream somehow. The only thing I can see that would be difference when creating the signature twice would be the date name field signDate (signDate = new GregorianCalendar(); in constructor). I have seen that there is a setSignDate method in the PDFsignatureAppearance class and have tested to see if two PDF signatures would be equal when created with the same set date. This did not work, the range stream was still off, even though it was the same PDF file. Any ideas on mimicking PDF signatures would be great. Thanks, Jared -- View this message in context: http://www.nabble.com/Creating-the-same-PDFSignatureAppearance-twice....-tp26070126p26070126.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://www.1t3xt.com/docs/book.php Check the site with examples before you ask questions: http://www.1t3xt.info/examples/ You can also search the keywords list: http://1t3xt.info/tutorials/keywords/ ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://www.1t3xt.com/docs/book.php Check the site with examples before you ask questions: http://www.1t3xt.info/examples/ You can also search the keywords list: http://1t3xt.info/tutorials/keywords/
