[Bug 1912526] Re: cannot import new keys if another malformed key exists

[Christian Rauch]

I have to say that it is quite a shame that Canonical does not provide a
proper solution for this problem, as it has quite a big impact if you
cannot update packages with security fixes anymore.

Anyway, I managed to solve the problem. From an earlier repo
installation I had a file "isv:ownCloud:desktop.asc" inside

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Title:
  cannot import new keys if another malformed key exists

Status in apt package in Ubuntu:
  New

Bug description:
  "apt-key add" fails to import keys if there exists another key with a
  malformed file name.

  Such malformed key names used to be provided by the openSUSE Build
  Service (https://github.com/openSUSE/software-o-o/issues/842).

  After importing such malformed key, future key imports will fail with
  something like:

      $ sudo apt-key add linux_signing_key.pub 
      gpg: invalid key resource URL '/tmp/apt-key-gpghome.f8IaqZ48Ze/isv:ownCloud:desktop.asc.gpg'
      gpg: keyblock resource '(null)': General error

  even though no such file "isv:ownCloud:desktop.asc.gpg" exists
  anywhere on the filesystem.

  This affects deb packages that import public repo keys during
  installation, such as Google Chrome or Vivaldi, and results in minor
  issues such as breaking GUI tools and CLI warnings, and the major
  issue that the installed repo cannot be used anymore to update the
  software (Google Chrome, Vivaldi).

  apt-key should be robust to such issues and continue importing keys.
  As in the example above, apt-key should import "linux_signing_key.pub"
  no matter if another unrelated key is malformed etc.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: apt 2.0.2ubuntu0.2
  ProcVersionSignature: Ubuntu 5.8.0-38.43~20.04.1-generic 5.8.18
  Uname: Linux 5.8.0-38-generic x86_64
  NonfreeKernelModules: openafs nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.14
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Jan 20 19:24:34 2021
  InstallationDate: Installed on 2020-04-24 (271 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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