Well my original question was whether we can sign a pdf document which is not signed but encrypted which is not possible using iText.
My next question is can it be possible to remove the password based security from a pdf document using iText ?. If its possible then we can first remove the password based security from pdf using iText then sign and then again apply the security again. Note: Yes in acrobat if a document is signed & encrypted, we can't sign it again but if a document is only encrypted then we can remove the encryption, apply signatures and then encrypt the pdf document. Regards, Wahaj ----- Original Message ----- From: "Paulo Soares" <[EMAIL PROTECTED]> To: "Leonard Rosenthol" <[EMAIL PROTECTED]>; "Wahaj" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Monday, December 20, 2004 9:01 PM Subject: RE: [iText-questions] Signing a pdf document which is originally encrypted > The question here was how to append another signature to an already > signed and encrypted document. I can't do it in Acrobat so, I suppose > that it's not to be done. > > Best Regards, > Paulo Soares > > > -----Original Message----- > > From: Leonard Rosenthol [mailto:[EMAIL PROTECTED] > > Sent: Monday, December 20, 2004 3:48 PM > > To: Wahaj; Paulo Soares; [EMAIL PROTECTED] > > Subject: Re: [iText-questions] Signing a pdf document which > > is originally encrypted > > > > At 10:19 AM 12/20/2004, Wahaj wrote: > > >Ok then what is the purpose of the provided password > > (whether owner's or > > >user's) in the PDFReader constructor > > > > In order to allow you to read a document that has been > > encrypted. For example, to retrieve metadata. > > > > > > >if we can't sign a pdf document. > > > > Modifications on encrypted document, esp. something > > as complex as > > signing, requires a LOT more internal mechanics inside of iText than > > currently exist. In addition, there are a variety of legal and > > philosophical issues involved when done as TWO processes. > > > > Normally, you'd want to have encrypted and signing > > done at the > > same time by the same tool. > > > > So if you know the passwords to the documents (and > > you would have > > to do make this useful anyway) - just decrypt them all and then rerun > > through iText for both crypt and sign. > > > > > > Leonard > > > > -------------------------------------------------------------- > > ------------- > > Leonard Rosenthol > > <mailto:[EMAIL PROTECTED]> > > Chief Technical Officer <http://www.pdfsages.com> > > PDF Sages, Inc. 215-938-7080 (voice) > > 215-938-0880 (fax) > > > > > ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ iText-questions mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/itext-questions
