(In reply to comment #30)
> (In reply to comment #26)
> > What's missing in gnutls is a way to parse all the relevant components of 
> > the
> > PKCS#7 object as present in a PDF signature.
> > 
> > It seems that in gnutls they assume those objects can only contain 
> > certificates
> > and CRLs as you can confirm if you go through the functions that take
> > gnutls_pkcs7_t as argument.
> > 
> > With openssl you can get the certificates, signature, and the digest of the
> > signed content (these are the essential parts for detached signatures as 
> > used
> > in PDF) as well as any optional timestamps or CRLs.
> 
> Would it be a lot of work to add support for that to gnutls?

Replying to myself:

<KaL> I wonder if it could be useful for glib-networking to implement the 
missing things in gnutls, or if we don't need that at all
<danw> reading...
<danw> chpe, KaL_out: both gnutls and glib-networking intentionally only do 
TLS, not crypto in general, so I don't think it makes sense to add the extra 
PKCS#7 functionality to either of them
<danw> NSS would be better than OpenSSL, and once all the p11-kit / 
NSS-shared-DB stuff gets figured out fully, then NSS-based apps will be able to 
access your gnome-keyring certificates via PKCS#11

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to poppler in Ubuntu.
https://bugs.launchpad.net/bugs/740506

Title:
  verify digital signatures

Status in Poppler:
  Confirmed
Status in “poppler” package in Ubuntu:
  Triaged

Bug description:
  Binary package hint: evince

  This is a feature request to verify digital signatures.  I'm receiving more 
and more digitally signed PDF's and evince already acknowledges them with:
  Signature Not Verified
  Digitally signed by <signer>
  Date:  <time stamp>
  Reason: <reason>
  Location: <location>
  but it would be great if Evince would be integrated into the distro's 
ca-certificate infrastructure to verify these signatures.

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