path: root/share/man/keyringer.1

.TH KEYRINGER 1 "Oct 25, 2013" "Keyringer User Manual"
.SH NAME
.PP
keyringer - encrypted and distributed secret sharing software
.SH SYNOPSIS
.PP
keyringer <\f[I]keyring\f[]> <\f[I]action\f[]> [\f[I]options\f[]]...
.SH DESCRIPTION
.PP
Keyringer lets you manage and share secrets using GnuPG and Git in a
distributed fashion.
.PP
It has custom commands to create key-pairs and to encrypt, decrypt and
re-encrypt secrets.
It also supports encryption to multiple recipients and groups of
recipients, to allow a workgroup to share access to a single repository
while restricting some secrets to subsets of the group.
.PP
Secrets are encrypted using GPG and added to a Git tree so that they can
be synced with remote branches later.
.SH ACTIONS
.PP
Keyringer has three types of actions:
.IP "1." 3
Repository lookup and manipulation actions, which handle repository
initialization, content tracking and navigation.
.IP "2." 3
Secret manipulation actions, which take care of encrypting, decrypting
and other read/write operations on secrets.
.IP "3." 3
Configuration actions, handling repository metadata.
.SH REPOSITORY LOOKUP AND MANIPULATION ACTIONS
.TP
.B init <\f[I]path\f[]> [\f[I]remote\f[]]
Initialize a new keyringer repository.
If a \f[I]remote\f[] URL is specified, keyringer will clone an existing
repository.
.RS
.PP
After initialization, \f[I]path\f[] will contain a folder structure for
storing secrets and metadata (user aka recipients, groups of recipients,
etc).
.PP
Also, an entry will be added to \f[C]$HOME/.keyringer/config\f[]
allowing keyringer to find the keyring by its alias.
.RE
.TP
.B git <\f[I]action\f[]> <\f[I]options\f[]>
Git wrapper that operates from the toplevel keyring repository.
You can issue any \f[I]GIT(1)\f[] subcommand with this action to have it
applied in the keyring repository.
.RS
.RE
.TP
.B ls <\f[I]path\f[]>
List contents from the toplevel repository \f[I]keys\f[] folder or from
relative paths if \f[I]path\f[] is specified.
Like the git wrapper, this is a wrapper around the \f[I]LS(1)\f[]
command.
.RS
.RE
.SH SECRET MANIPULATION ACTIONS
.PP
All secret manipulation actions operate upon a \f[I]secret\f[] which is
the pathname of an encrypted file relative to the keyring with optional
\f[C]\&.asc\f[] extension.
.PP
If the \f[C]\&.asc\f[] extension is omitted, keyringer will add it at
the end of the pathname.
.PP
No spaces are allowed in the secret name.
.PP
Secret manipulation actions do not commit changes into the secret
repository.
Instead, the user has to manually commit the changes using the git
wrapper action.
.TP
.B append <\f[I]secret\f[]>
Append contents into a secret by decrypting the secret, appending lines
read from the standard input and encrypting again.
.RS
.RE
.TP
.B append-batch <\f[I]secret\f[]>
Append contents into a secret, batch mode.
.RS
.RE
.TP
.B decrypt <\f[I]secret\f[]>
Decrypts a secret into standard output.
.RS
.RE
.TP
.B del <\f[I]secret\f[]>
Removes a secret using Git.
After deleting a secret a git commit and push is still needed to update
remote repositories.
.RS
.PP
Please note that this command \f[B]does not remove the secret from the
Git history.\f[] To completely remove a file from a keyring, you should
also rewrite the Git history yourself.
.RE
.TP
.B edit <\f[I]secret\f[]>
Edit a secret by temporarily decrypting it, opening the decrypted copy
into the text editor defined by the \f[I]$EDITOR\f[] environment
variable and then re-encrypting it.
.RS
.RE
.TP
.B encrypt <\f[I]secret\f[]> [\f[I]file\f[]]
Encrypts content from standard input or \f[I]file\f[] into
\f[I]secret\f[] pathname.
No spaces are supported in the \f[I]secret\f[] name.
If \f[I]file\f[] is actually a folder, keyringer will recursivelly
encrypt all it\[aq]s contents.
.RS
.RE
.TP
.B encrypt-batch <\f[I]secret\f[]> [\f[I]file\f[]]
Encrypt content, batch mode.
Behavior is identical to \f[I]encrypt\f[] action, but less verbose.
Useful inside scripts.
.RS
.RE
.TP
.B genpair <\f[I]ssh\f[]|\f[I]gpg\f[]|\f[I]ssl\f[]|\f[I]ssl-self\f[]>
[\f[I]options\f[]]
Wrapper to generate encryption key-pairs, useful for automated key
deployment.
.RS
.RE
.TP
.B open <\f[I]secret\f[]>
Decrypt a secret into a temporary folder and open it using xdg-open,
which tries to figure out the file type and then calls the associated
application.
.RS
.PP
After the application exits, keyringer encrypts the temporary decrypted
file again into the secret file and deletes the temporary file.
.RE
.TP
.B recrypt <\f[I]secret\f[]>
Re-encrypts a secret by decrypting it and encrypting it again.
Useful when users are added into the recipient configuration.
If no \f[I]secret\f[] is given, all secrets in the repository are
re-encrypted.
.RS
.RE
.SH CONFIGURATION ACTIONS
.TP
.B commands
List available actions, useful for shell completion and syntax check.
.RS
.RE
.TP
.B options <\f[I]ls\f[]|\f[I]edit\f[]|\f[I]add\f[]>
List, edit or add miscellaneous \f[I]repository\f[] options.
.RS
.PP
Repository options are settings which are saved in the repository as a
\f[I]global\f[] configuration stanza for a given keyring, shared by all
users with access to the repository.
.PP
Options are written using the \f[I]KEY=VALUE\f[] syntax.
All lines starting with the hash (#) character are interpreted as
comments.
.RE
.TP
.B preferences <\f[I]ls\f[]|\f[I]edit\f[]|\f[I]add\f[]>
List, edit or add \f[I]user\f[] preferences for a given repository.
.RS
.PP
User preferences are settings which are saved in the user\[aq]s
keyringer folder (\f[C]$HOME/.keyringer/\f[]), and not shared with the
other users.
.PP
Preferences are written using the \f[I]KEY=VALUE\f[] syntax.
All lines starting with the hash (#) character are interpreted as
comments.
.RE
.TP
.B usage
Show keyringer usage information.
.RS
.RE
.TP
.B recipients <\f[I]ls\f[]|\f[I]edit\f[]> <\f[I]recipients-file\f[]>
List, create or edit recipients configuration.
.RS
.PP
Recipients files are lists of OpenPGP public key fingerprints which are
used by keyringer when encrypting secrets and associated with email
aliases.
.PP
Keyringer uses a default recipients file, but specifying a custom
\f[I]recipients-file\f[] pathname will override this default.
.PP
For instance, if a user encrypts a secret to a file in the keyring
repository\[aq]s \f[I]accounting\f[] folder, a \f[I]recipients-file\f[]
under \f[I]accounting\f[] will be used.
Encrypting a secret into \f[I]accounting/bank-accounts\f[] will result
in a file \f[C]$KEYRING_FOLDER/keys/accounting/bank-accounts.asc\f[]
encrypted using the public keys listed in the config
file\f[C]$KEYRING_FOLDER/config/recipients/accounting\f[].
.PP
Each line in a recipients file has entries in the format
\[aq]john\@doe.com XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\[aq], where
\f[I]john\@doe.com\f[] is an alias for the GPG public key whose
fingerprint is \f[I]XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.\f[]
.PP
All lines starting with the hash (#) character are interpreted as
comments.
.PP
Parameters to the \f[I]recipients\f[] action are:
.TP
.B \f[I]ls\f[]
List all existing recipients files.
.RS
.RE
.TP
.B \f[I]edit\f[]
Create or edit a recipients file.
.RS
.PP
Editing happens using the editor specified by the \f[C]$EDITOR\f[]
environment variable.
.PP
The required parameter \f[I]recipients-file\f[] is interpreted relative
to the \f[C]$KEYRING_FOLDER/config/recipients/\f[] folder.
.RE
.RE
.SH FILES
.PP
$HOME/.keyringer/config : User\[aq]s main configuration file used to map
alias names to keyrings.
.PP
$HOME/.keyringer/\f[I]keyring\f[] : User preferences for the keyringer
aliased \f[I]keyring\f[] keyring.
.PP
$KEYRING_FOLDER/config/options : Custom keyring options which will be
applied for all users that use the keyringer repository.
.SH LIMITATIONS
.PP
Keyringer currently has the following limitations:
.IP "1." 3
Metadata is not encrypted, meaning that an attacker with access to a
keyringer repository can discover all public key IDs used for
encryption, and which secrets are encrypted to which keys.
This can be improved in the future by encrypting the repository
configuration with support for the \f[I]\-\-hidden-recipient\f[] GnuPG
option.
.IP "2." 3
History is not rewritten by default when secrets are removed from a
keyringer repository.
After a secret is removed with the \f[I]del\f[] action, it will still be
available in the repository history even after a commit.
This is by design for the following reasons:
.IP \[bu] 2
It\[aq]s the default behavior of the Git content tracker.
Forcing the deletion by default could break the expected behavior and
hence limit the repository\[aq]s backup features, which can be helpful
if someone mistakenly overwrites a secret.
.IP \[bu] 2
History rewriting cannot be considered a security measure against the
unauthorized access to a secret as it doesn\[aq]t automatically update
all working copies of the repository.
.RS 2
.PP
In the case that the secret is a passphrase, the recommended measure
against such attacks is to change the passphrase, making useless the
knowledge of the previous secret.
.PP
Users wishing to edit their repository history should proceed manually
using the \f[I]git\f[] action.
.RE
.SH SEE ALSO
.PP
The \f[I]README\f[] file distributed with Keyringer contains full
documentation.
.PP
The Keyringer source code and all documentation may be downloaded from
<https://keyringer.pw>.
.SH AUTHORS
Silvio Rhatto <rhatto@riseup.net>.