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[Bug 1085526]

 

Created attachment 120434
Improve robustness of SignatureHandler::validateCertificate

This patch adds additional NULL-checking in
SignatureHandler::validateCertificate() which avoids segfault for some
signatures like the one contained here:
http://www.gpo.gov/fdsys/pkg/BUDGET-2015-BUD/pdf/BUDGET-2015-BUD.pdf

It also removes a useless branch in validateCertificate()

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https://bugs.launchpad.net/bugs/1085526

Title:
  ubuntu pdf doc viewer will not let me sign a document

Status in Poppler:
  Confirmed
Status in evince package in Ubuntu:
  Triaged

Bug description:
  Just updated in last few weeks, i think ubuntu 12.4

  To sign the document i have to send it to my neighbors windows
  computer, open it, sign it, then send it, then I get a note from echo
  sign that the document was sent with my signature.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: evince 3.2.1-0ubuntu2.3
  ProcVersionSignature: Ubuntu 3.0.0-27.44-generic 3.0.45
  Uname: Linux 3.0.0-27-generic i686
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  Date: Fri Nov 30 18:13:25 2012
  ExecutablePath: /usr/bin/evince
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: evince
  UpgradeStatus: Upgraded to oneiric on 2012-11-18 (12 days ago)

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