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

       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.

       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

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

       export keyid
           Output the key keyid to standard output.

           Output all trusted keys to standard output.

           List trusted keys.

           List fingerprints of trusted keys.

           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 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           the local keyring the archive keys which are no longer valid.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.

           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,

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

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

           Local trust database of archive keys.

           Keyring of Ubuntu archive trusted keys.

           Keyring of Ubuntu archive removed trusted keys.

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

       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.

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

       Jason Gunthorpe

       APT team

        1. APT bug page

APT 1.2.32                      15 October 2015                     APT-KEY(8)
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