Can't be used to verify current trusty images

[dann frazier]

The description of this package says "This package contains the keys used for files on cloud-images.ubuntu.com." However, the checksum files are signed with keyid 7DB87C81, which I can't find in this package.

ubuntu@server-46af3152-8a83-4995-8dfb-e3b2d07e0841:~$ wget http://cloud-images.ubuntu.com/trusty/current/SHA256SUMS http://cloud-images.ubuntu.com/trusty/current/SHA256SUMS.gpg
ubuntu@server-46af3152-8a83-4995-8dfb-e3b2d07e0841:~$ gpg --verify SHA256SUMS.gpg SHA256SUMS
gpg: Signature made Sat 14 Jun 2014 01:03:39 PM UTC using RSA key ID 7DB87C81
gpg: Can't check signature: public key not found
ubuntu@server-46af3152-8a83-4995-8dfb-e3b2d07e0841:~$ gpg --keyring /usr/share/keyrings/ubuntu-cloudimage-keyring.gpg --list-keys/usr/share/keyrings/ubuntu-cloudimage-keyring.gpg
-------------------------------------------------
pub 4096R/476CF100 2012-10-27
uid Ubuntu Cloud Image Builder (Canonical Internal Cloud Image Builder) <email address hidden>
sub 4096R/9D817405 2012-10-27

ubuntu@server-46af3152-8a83-4995-8dfb-e3b2d07e0841:~$ dpkg -l ubuntu-cloudimage-keyring
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-p end
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==========================-==================-==================-=========================================================
ii ubuntu-cloudimage-keyring 2013.11.11 all GnuPG keys of the Ubuntu Cloud Image builder

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-keyring - 2018.02.05

---------------
ubuntu-keyring (2018.02.05) bionic; urgency=medium

  * Ship the current ubuntu-cloudimage-keyring in the ubuntu-keyring
    package. LP: #1331057
  * Ship ubuntu-cloud-keyring for Cloud Archive signing keys, as a
    separate keyring in /etc/apt/trusted.gpg.d/, and remove it from the
    trusted.gpg keyring as no longer needed to be there.
  * Ship ubuntu-dgbsym key
  * Specify udeb Package-Type and bump priority to standard.
  * Bump standards version

 -- Dimitri John Ledkov <email address hidden> Wed, 17 Jan 2018 16:01:45 +0000