[Bug 1624378] Re: apt-key net-update should use trusted.gpg.d/

[Julian Andres Klode]

I think we reached somewhat of an agreement that net-update is a bad
idea and should not be done. It also depends on gnupg.

We should eventually consider developing something else, but I'm not
sure how that would look like. Currently, there is no way to revoke keys
except through packages, basically, which is a security issue. We need
to provide signed keyfiles on different locations that apt can download
so an attacker cannot use a broken key and MITM exisiting repositories
forever.

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https://bugs.launchpad.net/bugs/1624378

Title:
  apt-key net-update should use trusted.gpg.d/

Status in apt package in Ubuntu:
  Won't Fix

Bug description:
  apt-key net-update for the new world order

  /etc/apt/trusted.gpg is not longer preffered location for key updates.

  Instead, individual opengpg packets of exported public keys should be
  placed in /etc/apt/trusted.gpg.d

  Debian has already migrated to placing the keys there.

  To comply with /etc/apt/trusted.gpg.d structure, instead of updating
  the keys in the /etc/apt/trusted.gpg, imho apt-key net-update should
  download and place a /etc/apt/trusted.gpg.d/ubuntu-archive-
  netupdate.gpg key.

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