Okay, i solved the problem myself.... More or less :) I found an entry in a mailing list (itext or bouncycastle) where you have to Change the security provider. Here's the code:
//adding new provider, cause java got an error with acrobat version 1.6 Security.addProvider(new BouncyCastleProvider()); PdfPKCS7 pk = af.verifySignature(name,"BC"); Now it works! Thanks! -----Ursprüngliche Nachricht----- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Michael Kail Gesendet: Freitag, 3. März 2006 12:13 An: [email protected] Betreff: AW: [iText-questions] get Signatures Thanks a lot! But when I try to open a pdf file created with acrobat Version 7 the function verifySignature fails with error : sun.security.pkcs.ParsingException: toDerInputStream rejects tag type -96 I searched in the internet and found a lot people having the same problem, and the advise to use newer java version or bouncycastle. I'm using jre1.5.0_06 and there's the same error. So I want to know if there's any way to solve the problem with bouncycastle. Anybody tried? Or is there a good tutorial or hint how to get it working with iText-paulo? Regards Michael -----Ursprüngliche Nachricht----- Von: Paulo Soares [mailto:[EMAIL PROTECTED] Gesendet: Freitag, 3. März 2006 10:00 An: Michael Kail; [email protected] Betreff: Re: [iText-questions] get Signatures You already know that. There's another method to get the blank signatures. ----- Original Message ----- From: "Michael Kail" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, March 03, 2006 8:48 AM Subject: [iText-questions] get Signatures Hi! I have just one small question. Before I searched in the mailing list, but I didn't find any answer to my problem. Just to get sure, how to find any signature in a pdf file: PdfReader reader = new PdfReader(pdf); AcroFields af = reader.getAcroFields(); //get signature names ArrayList signames = af.getSignatureNames(); if (signames.isEmpty()){ return; } In this Arraylist are all Signature names available. Are there any known bugs or reasons why acrobat reader shows me a signature, but there's none in the ArrayList? Thanks for help again... Michael ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=k&kid0944&bid$1720&dat1642 _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=k&kid0944&bid$1720&dat1642 _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid0944&bid$1720&dat1642 _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions
