NAME

       apt-key - APT key management utility

SYNOPSIS

       apt-key [--keyring filename] {add filename | del keyid | export keyid | exportall | list |
               finger | adv | update | net-update | {-v | --version} | {-h | --help}}

DESCRIPTION

       apt-key is used to manage the list of keys used by apt to authenticate packages. Packages
       which have been authenticated using these keys will be considered trusted.

COMMANDS

       add filename
           Add a new key to the list of trusted keys. The key is read from the filename given
           with the parameter filename or if the filename is - from standard input.

           It is critical that keys added manually via apt-key are verified to belong to the
           owner of the repositories they claim to be for otherwise the apt-secure(8)
           infrastructure is completely undermined.

       del keyid
           Remove a key from the list of trusted keys.

       export keyid
           Output the key keyid to standard output.

       exportall
           Output all trusted keys to standard output.

       list
           List trusted keys.

       finger
           List fingerprints of trusted keys.

       adv
           Pass advanced options to gpg. With adv --recv-key you can e.g. download key from
           keyservers directly into the the trusted set of keys. Note that there are no checks
           performed, so it is easy to completely undermine the apt-secure(8) infrastructure if
           used without care.

       update
           Update the local keyring with the archive keyring and remove from the local keyring
           the archive keys which are no longer valid. The archive keyring is shipped in the
           archive-keyring package of your distribution, e.g. the ubuntu-keyring package in
           Ubuntu.

       net-update
           Perform an update working similarly to the update command above, but get the archive
           keyring from a URI instead and validate it against a master key. This requires an
           installed wget(1) and an APT build configured to have a server to fetch from and a
           master keyring to validate. APT in Debian does not support this command, relying on
           update instead, but Ubuntu's APT does.

OPTIONS

       Note that options need to be defined before the commands described in the previous
       section.

       --keyring filename
           With this option it is possible to specify a particular keyring file the command
           should operate on. The default is that a command is executed on the trusted.gpg file
           as well as on all parts in the trusted.gpg.d directory, though trusted.gpg is the
           primary keyring which means that e.g. new keys are added to this one.

FILES

       /etc/apt/trusted.gpg
           Keyring of local trusted keys, new keys will be added here. Configuration Item:
           Dir::Etc::Trusted.

       /etc/apt/trusted.gpg.d/
           File fragments for the trusted keys, additional keyrings can be stored here (by other
           packages or the administrator). Configuration Item Dir::Etc::TrustedParts.

       /etc/apt/trustdb.gpg
           Local trust database of archive keys.

       /usr/share/keyrings/ubuntu-archive-keyring.gpg
           Keyring of Ubuntu archive trusted keys.

       /usr/share/keyrings/ubuntu-archive-removed-keys.gpg
           Keyring of Ubuntu archive removed trusted keys.

SEE ALSO

       apt-get(8), apt-secure(8)

BUGS

       APT bug page[1]. If you wish to report a bug in APT, please see
       /usr/share/doc/debian/bug-reporting.txt or the reportbug(1) command.

AUTHOR

       APT was written by the APT team <apt@packages.debian.org>.

AUTHORS

       Jason Gunthorpe

       APT team

NOTES

        1. APT bug page
           http://bugs.debian.org/src:apt