1APT-KEY(8) APT APT-KEY(8)
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6 apt-key - Deprecated APT key management utility
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9 apt-key [--keyring filename] {add filename | del keyid | export keyid |
10 exportall | list | finger | adv | update | net-update |
11 {-v | --version} | {-h | --help}}
12
14 apt-key is used to manage the list of keys used by apt to authenticate
15 packages. Packages which have been authenticated using these keys will
16 be considered trusted.
17 Use of apt-key is deprecated, except for the use of apt-key del in
19 maintainer scripts to remove existing keys from the main keyring. If
20 such usage of apt-key is desired the additional installation of the GNU
21 Privacy Guard suite (packaged in gnupg) is required.
22 apt-key(8) will last be available in Debian 11 and Ubuntu 22.04.
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26 apt-key supports only the binary OpenPGP format (also known as "GPG key
27 public ring") in files with the "gpg" extension, not the keybox
28 database format introduced in newer gpg(1) versions as default for
29 keyring files. Binary keyring files intended to be used with any apt
30 version should therefore always be created with gpg --export.
31 Alternatively, if all systems which should be using the created keyring
33 have at least apt version >= 1.4 installed, you can use the ASCII
34 armored format with the "asc" extension instead which can be created
35 with gpg --armor --export.
36
38 add filename (deprecated)
39 Add a new key to the list of trusted keys. The key is read from the
40 filename given with the parameter filename or if the filename is -
41 from standard input.
42 It is critical that keys added manually via apt-key are verified to
44 belong to the owner of the repositories they claim to be for
45 otherwise the apt-secure(8) infrastructure is completely
46 undermined.
47 Note: Instead of using this command a keyring should be placed
49 directly in the /etc/apt/trusted.gpg.d/ directory with a
50 descriptive name and either "gpg" or "asc" as file extension.
51 del keyid (mostly deprecated)
53 Remove a key from the list of trusted keys.
54 export keyid (deprecated)
56 Output the key keyid to standard output.
57 exportall (deprecated)
59 Output all trusted keys to standard output.
60 list, finger (deprecated)
62 List trusted keys with fingerprints.
63 adv (deprecated)
65 Pass advanced options to gpg. With adv --recv-key you can e.g.
66 download key from keyservers directly into the trusted set of keys.
67 Note that there are no checks performed, so it is easy to
68 completely undermine the apt-secure(8) infrastructure if used
69 without care.
70 update (deprecated)
72 Update the local keyring with the archive keyring and remove from
73 the local keyring the archive keys which are no longer valid. The
74 archive keyring is shipped in the archive-keyring package of your
75 distribution, e.g. the debian-archive-keyring package in Debian.
76 Note that a distribution does not need to and in fact should not
78 use this command any longer and instead ship keyring files in the
79 /etc/apt/trusted.gpg.d/ directory directly as this avoids a
80 dependency on gnupg and it is easier to manage keys by simply
81 adding and removing files for maintainers and users alike.
82 net-update (deprecated)
84 Perform an update working similarly to the update command above,
85 but get the archive keyring from a URI instead and validate it
86 against a master key. This requires an installed wget(1) and an APT
87 build configured to have a server to fetch from and a master
88 keyring to validate. APT in Debian does not support this command,
89 relying on update instead, but Ubuntu's APT does.
90
92 Note that options need to be defined before the commands described in
93 the previous section.
94 --keyring filename (deprecated)
96 With this option it is possible to specify a particular keyring
97 file the command should operate on. The default is that a command
98 is executed on the trusted.gpg file as well as on all parts in the
99 trusted.gpg.d directory, though trusted.gpg is the primary keyring
100 which means that e.g. new keys are added to this one.
101
103 /etc/apt/trusted.gpg
104 Keyring of local trusted keys, new keys will be added here.
105 Configuration Item: Dir::Etc::Trusted.
106 /etc/apt/trusted.gpg.d/
108 File fragments for the trusted keys, additional keyrings can be
109 stored here (by other packages or the administrator). Configuration
110 Item Dir::Etc::TrustedParts.
111
113 apt-get(8), apt-secure(8)
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116 APT bug page[1]. If you wish to report a bug in APT, please see
117 /usr/share/doc/debian/bug-reporting.txt or the reportbug(1) command.
118
120 APT was written by the APT team <apt@packages.debian.org>.
121
123 Jason Gunthorpe
124 APT team
126
128 1. APT bug page
129 http://bugs.debian.org/src:apt
130APT 2.3.5 06 May 2020 APT-KEY(8)