APT-KEY(8)

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    Update the local keyring with the archive keyring and remove from the local keyring the archive keys which are no longer valid.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