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. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to poppler in Ubuntu. https://bugs.launchpad.net/bugs/740506 Title: verify digital signatures To manage notifications about this bug go to: https://bugs.launchpad.net/poppler/+bug/740506/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs