PPA signatures couldn't be verified because the public key is not available

[selfagency]

Describe the bug
PPAs fail to install due to missing public key

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BDEC5D575AE22F0F

** Log Files **

Hit:1 https://repos.insights.digitalocean.com/apt/do-agent main InRelease
Get:2 http://mirrors.digitalocean.com/ubuntu bionic InRelease [242 kB]
Get:3 https://download.keydb.dev/keydb-ppa ./ InRelease [2111 B]
Hit:4 http://mirrors.digitalocean.com/ubuntu bionic-updates InRelease
Ign:5 https://repo.logdna.com stable InRelease
Hit:6 https://repo.logdna.com stable Release
Hit:7 http://ppa.launchpad.net/fish-shell/release-3/ubuntu bionic InRelease
Hit:8 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:9 http://mirrors.digitalocean.com/ubuntu bionic-backports InRelease
Hit:10 https://deb.nodesource.com/node_12.x bionic InRelease
Hit:11 http://ppa.launchpad.net/jgmath2000/et/ubuntu bionic InRelease
Err:3 https://download.keydb.dev/keydb-ppa ./ InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BDEC5D575AE22F0F
Hit:12 http://ppa.launchpad.net/ondrej/php/ubuntu bionic InRelease
Reading package lists... Done
W: https://repos.insights.digitalocean.com/apt/do-agent/dists/main/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/keydb.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://mirrors.digitalocean.com/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/keydb.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: https://download.keydb.dev/keydb-ppa/./InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/keydb.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: GPG error: https://download.keydb.dev/keydb-ppa ./ InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BDEC5D575AE22F0F
E: The repository 'https://download.keydb.dev/keydb-ppa ./ InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: http://mirrors.digitalocean.com/ubuntu/dists/bionic-updates/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/keydb.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: https://repo.logdna.com/dists/stable/Release.gpg: The key(s) in the keyring /etc/apt/trusted.gpg.d/keydb.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://ppa.launchpad.net/fish-shell/release-3/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/keydb.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/keydb.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://mirrors.digitalocean.com/ubuntu/dists/bionic-backports/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/keydb.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: https://deb.nodesource.com/node_12.x/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/keydb.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://ppa.launchpad.net/jgmath2000/et/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/keydb.gpg are ignored as the file is not readable by user '_apt' executing apt-key.
W: http://ppa.launchpad.net/ondrej/php/ubuntu/dists/bionic/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/keydb.gpg are ignored as the file is not readable by user '_apt' executing apt-key.

To Reproduce
Do you know how to reproduce this? If so please provide repro steps.

root@host:~# sudo curl -s --compressed -o /etc/apt/trusted.gpg.d/keydb.gpg https://download.keydb.dev/keydb-ppa/keydb.gpg
root@host:~# sudo curl -s --compressed -o /etc/apt/sources.list.d/keydb.list https://download.keydb.dev/keydb-ppa/keydb.list
root@host:~# sudo apt update

[selfagency]

I searched various public key databases, by the way, and the key doesn't exist.

[selfagency]

Weird, I needed to chmod o+r /etc/apt/trusted.gpg.d/keydb.gpg

[benschermel]

I cannot reproduce what you are seeing. I spin up a minimal ubuntu 18.04 node on aws and it works fine. I have not encountered this in any testing so far either. If you have a machine image you are using i could take a closer look.

[mcmcghee]

I had the same problem and had to run wget -qO - https://download.keydb.dev/keydb-ppa/keydb.gpg | sudo apt-key add -

[mcineran]

@JohnSully are you okay to submit the key to a public key server? http://keyserver.ubuntu.com/ ?
It's for mirroring purposes..

Thanks!

[selfagency]

closing this because it's 2 years old, stale, and i want to clean up my issues tab