I am running kali linux (debian) with root privileges. I do a update with sudo apt-get update
and I get the error below, how do I sign the ubuntu's official website in this case ? I looked for other threads, they don't provide a solution for my own platform.
Output of unsigned
┌──(root㉿kali)-[/home/kali/Desktop]
└─# sudo apt-get update
Hit:1 http://kali.download/kali kali-rolling InRelease
Get:2 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
Err:2 http://security.ubuntu.com/ubuntu focal-security InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
Hit:3 https://cli-assets.heroku.com/channels/stable/apt ./ InRelease
Hit:4 https://packagecloud.io/AtomEditor/atom/any any InRelease
Reading package lists... Done
W: GPG error: http://security.ubuntu.com/ubuntu focal-security InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
E: The repository 'http://security.ubuntu.com/ubuntu focal-security 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: https://cli-assets.heroku.com/channels/stable/apt/./InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
The error is specifically this line:
E: The repository 'http://security.ubuntu.com/ubuntu focal-security InRelease' is not signed.
apt-get update
command..