apt-key

Key management utility for the APT Package Manager on Debian and Ubuntu.

Note: `apt-key` is now deprecated (except for the use of `apt-key del` in maintainer scripts).

More information.

• List trusted keys:

apt-key list

• Add a key to the trusted keystore:

apt-key add {public_key_file.asc}

• Delete a key from the trusted keystore:

apt-key del {key_id}

• Add a remote key to the trusted keystore:

wget -qO - {https://host.tld/filename.key} | apt-key add -

• Add a key from keyserver with only key id:

apt-key adv --keyserver {pgp.mit.edu} --recv {KEYID}

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