Not sure how good it is, but in the poppler discussion this site was mentioned to verify the signature details: https://validator.docusign.com/
I have tried using with poppler's pdfsig and Okular. Adam On Tue, Jun 8, 2021 at 10:14 PM Leonard Janis Robert König <l...@ljrk.org> wrote: > On Tue, 2021-06-08 at 17:41 +0200, Pablo Rodriguez wrote: > > On 6/7/21 10:43 PM, Leonard Janis Robert König wrote: > > > Hi Adam, Hi Pablo, > > > > > > I just noticed your replies, sorry for the late answer! > > > > > > I could sign forms with both okular as well as mupdf just fine, > > > although the behavior is different. The former assumes that the > > > field > > > is already an existing signature and segfaults when you look at the > > > properties, but cann successfully add another signature using the > > > "Tools" menu. > > > > Hi Pablo, > > > I’m afraid that I don’t use Okular. > > > > > With the latter you can click on the form field to > > > trigger a menu to select the signature you want to sign with, and > > > it > > > "replaces" the "empty" signature generated by ConTeXt. Both work > > > fine, > > > even with my newer ConTeXt. > > > > mupdf-gl signs the document, but in a way that only mupdf-gl > > understands it. > > > > Try to open a PDF document signed with mupdf-gl in Acrobat (Reader or > > not). You will see that the signature is wrong. > > Hm, I tested with Okular, Firefox and MasterPDF as I don't have Acrobat > on Linux, and both understand the signature, which is why I thought > it'd be correct. > > > > > > > On Sun, May 2, 2021 at 5:50 PM Pablo Rodriguez <oi...@gmx.es> > > > > wrote: > > > > > [...] > > > > > From my experience, only Acrobat deals with child objects in > > > > > signatures > > > > > generating a valid signature (and rewriting the two objects > > > > > into a > > > > > single one). > > > > > > As mentioned above, it seems that mupdf (now?) actually rewrites > > > "both" > > > signatures into one, however Okular doesn't. > > > > Sorry, objects is a very special term in PDF parlance. It has nothing > > to > > do with signatures. > > > > Just in case it might help, > > Ah, I see. I'm still a bit unsure what to make of the "fields nested > in TABLEs" issue, but maybe further debugging will show at some point. > > ~ Leo > > > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to > the Wiki! > > maillist : ntg-context@ntg.nl / > http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://context.aanhet.net > archive : https://bitbucket.org/phg/context-mirror/commits/ > wiki : http://contextgarden.net > > ___________________________________________________________________________________ >
___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________
