Are you talking about the Object.hashCode() method? Peter
On Tue, 2007-01-16 at 04:51 -0800, Dimiter Nikolov wrote: > I've read the following thread in your mailing list > archive. > From: Paulo Soares <[EMAIL PROTECTED]> > RE: strange signature creation in itext > 2005-09-28 01:54 > There's nothing strange with that. All te pdfs > have > an internal creation > date and that alone would be enough to get a > different hash. > > -----Original Message----- > From: Tamas Nemeth > [mailto:[EMAIL PROTECTED] > Sent: Tuesday, September 27, 2005 11:16 PM > To: [EMAIL PROTECTED]; Paulo Soares > Subject: strange signature creation in itext > > Hi! > > I'm trying to create command line pdf signer, > which creates a signed > pdf in 2 part. First an external program calls > me > to get a hash (my > > program creates the hash and gives back to the > external program), then > the external program creates a pkcs7 file onto > that hash and gives > back to my command line program. After that my > command line program > inserts the hash into the pdf file. > This works good, but sometimes (10:1) I get > different hash when I > create hash, and when I try to insert the pkcs7 > file into the pdf. > As I see iText sometimes creates different pdf > structure and that is > why I get different hash values. I can't see the > logic behind that. > Can somebody tell meg, why creates iText > different > structure > sometimes. Is there any way to always create the > same structure (hash) > onto the same pdf? > > I have the same problem. So I don't think the > problem > of calculating different hashes is the internal > creation date because: > 1. I've tried to put this creation date > programmatically through the following code: > Calendar cal = Calendar.getInstance(); > long l = 1156153389444L; > cal.setTimeInMillis(l); > sap.setSignDate(cal); > , so the creation date is the same all the time. > 2. The problem appears only on Linux(Trustix > Secure > Linux 3.0) OS. In Windows it works just fine - the > hash of given document is equal all times. On > Linux > the hash is same all the times only if the java > interpreter mode is chosen(java -Xint). But then > it > works 10 times slower. Java version on both OS : > jdk 1.5.0_02. IText version: itext-paulo-155.jar. > > I hope you can help me fix this problem. Thanks in > advance! > Best regards, > Dimitar > > > > > ____________________________________________________________________________________ > Bored stiff? Loosen up... > Download and play hundreds of games for free on Yahoo! Games. > http://games.yahoo.com/games/front > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys - and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > iText-questions mailing list > iText-questions@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/itext-questions > Buy the iText book: http://itext.ugent.be/itext-in-action/ ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://itext.ugent.be/itext-in-action/
