Can you port your change to the maintenance branch? I'm very interested to have encryption with JDK1.3.
Many thanks, Bernard > -----Original Message----- > From: Jeremias Maerki [mailto:[EMAIL PROTECTED] > Sent: 13 March, 2003 18:00 > To: [EMAIL PROTECTED] > Subject: Re: PDF Encryption in HEAD > > > Hi crypto-guys! > > I've just committed PDF encryption support by Patrick C. Lankswert to > the redesign. The bad message is that it doesn't work yet. I get blank > pages in Acrobat when enabled, although the PDF looks good when compared > with one generated by the maintenance branch. I guess that's the same > problem you had, Jörg? Well, and I haven't enabled encryption everywhere, > yet. That shouldn't be a problem right now, because I've extended the > stuff to be completely optional depending on the availability of JCE > and/or cryptographic algorithms necessary. No need for java-1.3/java-1.4 > directories, which is actually strange if you have JCE installed on JDK > 1.3. The stuff looks out for "javax.crypto.Cipher" to be present to > determine if JCE is available. A seperate check looks for the necessary > algorithms (RC4 and MD5). > > My stuff is configured via the FOUserAgent which can now hold a > PDFEncryptionParams object containing the passwords and permissions. If > is null (default) no encryption happens. > > I thought I just commit my stuff and we'll figure out what's wrong based > on that code. Better this than nothing. I'll continue my investigations > tomorrow. Maybe Patrick could have a look at the stuff. Maybe you finds > something? > > On 09.03.2003 23:44:27 J.Pietschmann wrote: > > Hi all, > > I tried to get PDF encryption into HEAD and failed. > > Most of the problem is that PDFXObject no longer has a reference > > to the PDFDocument, where the encryption object resides in the patch. > > I'm not sure how important this is, the encryption filter is > > different from the other filters: it takes the number+generation > > of something, however, at some instances it takes the number+gen > > from the XObject, at others (ICCStream) from the stream it is > > applied. I have not enough knowledge of PDF encryption to sort > > this out. Actually, I didn't try the code from the maintentance > > branch with an image (hint, hint: need GIF/BMP, JPG with ICC and > > EPS to test. Jeremias: this appears to be your speciality...). > > > > Any hints how to proceed? > > > Jeremias Maerki > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, email: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
