linux man page for apt-key

APT-KEY(8)								APT								APT-KEY(8)

NAME
       apt-key - APT key management utility

SYNOPSIS
       apt-key [--keyring filename] [command] [arguments...]

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 filename, or standard input if filename is -.

       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 download the public key.

       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	   Update the local keyring with the archive keyring and remove from the local keyring the archive keys which are no longer valid.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 debian-archive-keyring package in Debian.

       net-update
	   Work similar to the update command above, but get the archive keyring from an 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 and relies 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 specific 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, through 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/debian-archive-keyring.gpg
	   Keyring of Debian archive trusted keys.

       /usr/share/keyrings/debian-archive-removed-keys.gpg
	   Keyring of Debian 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.

AUTHOR
       Jason Gunthorpe

COPYRIGHT
       Copyright (C) 1998-2001 Jason Gunthorpe

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

Linux								  28 October 2008							APT-KEY(8)