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doc: Describe the relation between pubring.gpg and pubring.kbx 

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GnuPG-bug-id: 4958
This commit is contained in:
Werner Koch 2020-08-20 10:15:38 +02:00
parent b8c4dd902d
commit 4c54a0e34f
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@ -3726,26 +3726,54 @@ files; They all live in the current home directory (@pxref{option
@item ~/.gnupg/pubring.gpg
@efindex pubring.gpg
The public keyring. You should backup this file.
The public keyring using a legacy format. You should backup this file.
If this file is not available, @command{gpg} defaults to the new
keybox format and creates a file @file{pubring.kbx} unless that file
already exists in which case that file will also be used for OpenPGP
keys.
Note that in the case that both files, @file{pubring.gpg} and
@file{pubring.kbx} exists but the latter has no OpenPGP keys, the
legacy file @file{pubring.gpg} will be used. Take care: GnuPG
versions before 2.1 will always use the file @file{pubring.gpg}
because they do not know about the new keybox format. In the case
that you have to use GnuPG 1.4 to decrypt archived data you should
keep this file.
@item ~/.gnupg/pubring.gpg.lock
The lock file for the public keyring.
@item ~/.gnupg/pubring.kbx
@efindex pubring.kbx
The public keyring using a different format. This file is shared
with @command{gpgsm}. You should backup this file.
The public keyring using the new keybox format. This file is shared
with @command{gpgsm}. You should backup this file. See above for
the relation between this file and it predecessor.
To convert an existing @file{pubring.gpg} file to the keybox format, you
first backup the ownertrust values, then rename @file{pubring.gpg} to
@file{publickeys.backup}, so it won’t be recognized by any GnuPG version,
run import, and finally restore the ownertrust values:
@example
$ cd ~/.gnupg
$ gpg --export-ownertrust >otrust.lst
$ mv pubring.gpg publickeys.backup
$ gpg --import-options restore --import publickeys.backups
$ gpg --import-ownertrust otrust.lst
@end example
@item ~/.gnupg/pubring.kbx.lock
The lock file for @file{pubring.kbx}.
@item ~/.gnupg/secring.gpg
@efindex secring.gpg
A secret keyring as used by GnuPG versions before 2.1. It is not
used by GnuPG 2.1 and later.
The legacy secret keyring as used by GnuPG versions before 2.1. It is not
used by GnuPG 2.1 and later. You may want to keep it in case you
have to use GnuPG 1.4 to decrypt archived data.
@item ~/.gnupg/secring.gpg.lock
The lock file for the secret keyring.
The lock file for the legacy secret keyring.
@item ~/.gnupg/.gpg-v21-migrated
@efindex .gpg-v21-migrated