Re: FLOSS support for signed PDFs
> 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?
> [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.
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:
This looks interesting: