On Sun, 30 Sep 2007 20:01:01 -0500 John Hasler <[EMAIL PROTECTED]> wrote:
> Celejar writes: > > A financial institution refused to enable electronic delivery unless it > > detected Acrobat Reader installed on my system. > > How are they doing this detection? Could you spoof it? I don't know. > > [Our] statements are created using Adobe Acrobat software and a digital > > signature is added for security purposes. As the Adobe Acrobat Reader is > > currently the only PDF reader that fully supports digitally signed PDF > > files, this software is required to ensure that the document is genuine. > > <http://www.secardeo.com/Trusted_E-Business/Digital_Signatures/PDF-FAQ/pdf-faq.html> > > pdfinfo _might_ get you the signature if you want to verify it (but you'd > have to get their certificate somehow). > > Or perhaps they are using PGP: > <https://www.veridis.com/philip-zimmermann/philip-zimmermann-corner/digitally-signed-pdf-files-now-with-openpgp-keys-%28by-philip-zimmermann%29.htm> > > This looks interesting: > <http://homes.esat.kuleuven.be/~decockd/wiki/bin/view.cgi/HowTos/SignatureVerification> Thanks for the links; I will take a look at them. > John Hasler Celejar -- mailmin.sourceforge.net - remote access via secure (OpenPGP) email ssuds.sourceforge.net - A Simple Sudoku Solver and Generator -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
