ubuntu-cloudimage-keyring:
  Installed: (none)
  Candidate: 2013.11.11
  Version table:
     2013.11.11 0
        500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
ubuntu-cloud-keyring:
  Installed: (none)
  Candidate: 2012.08.14
  Version table:
     2012.08.14 0
        500 http://archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
ubuntu-keyring:
  Installed: 2012.05.19
  Candidate: 2012.05.19
  Version table:
 *** 2012.05.19 0
        500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status
ubuntu-extras-keyring:
  Installed: 2010.09.27
  Candidate: 2010.09.27
  Version table:
 *** 2010.09.27 0
        500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status