Multiple signatures (was: why don't they work ? )
- From: "aldo.buratti (at) tiscali.it" <aldo.buratti (at) tiscali.it>
- Date: Mon, 13 Nov 2006 12:42:15 +0100 (CET)
Great job Antonio!
It is a really promising experiment.
I can confirm that your resulting document is correct.
Althoug I'm not an expert of pdf-core internals, I noted some strange
things within your generated-pdf [3]:
* Within the appended-revision section, there is a dictionary object
(66 0) with
/Type/catalog
What is it for ? It is a dangling (not referenced) object.
* You also re-wrote the field list (object 17 0) even if nothing has
changed.
Is it intentional or is it a general side-effect of the IText way-of-
working ?
Note that, altough this fake change does not invalidate the
certification-signature,
it increments the somewhat-misteriuos change counter displayed when
you look at the detailed changes properties
( I am referring to the "N miscellaneous changes" information ("N
modifiche varie" in Italian) displayed by Acrobat Reader).
I'd like to know more about difficulties and limits of your
experiment, so please aswer to my last question:
* Will you be able to create a certification-signature (allowing next
approval-signatures) on a new document ?
Thanks again for your work, I hope to hear you soon.
Aldo
Naviga e telefona senza limiti con Tiscali
Scopri le promozioni Tiscali adsl: navighi e telefoni senza canone Telecom
http://abbonati.tiscali.it/adsl/
-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
iText-questions mailing list
iText-questions (at) lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/itext-questions