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This man page should help people to set up OX in profanity. We have profanity-ox.1 which is the same as `/help ox` and describes how to use OX. This man page will help with the setup with the external gpg program. Based on the blogpost of Stefan: https://profanity-im.github.io/blog/post/openpgp-for-xmpp-ox/
154 lines
3.9 KiB
Groff
154 lines
3.9 KiB
Groff
.TH man 1 "2022-05-03" "0.12.1" "Profanity XMPP client"
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.SH NAME
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Profanity \- a simple console based XMPP chat client.
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.SH DESCRIPTION
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.ie "\f[CB]x\f[]"x" \{\
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. ftr V B
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. ftr VI BI
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. ftr VB B
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. ftr VBI BI
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.\}
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.el \{\
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. ftr V CR
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. ftr VI CI
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. ftr VB CB
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. ftr VBI CBI
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.\}
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.PP
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This man page is intended to help you set up XEP-0374: OpenPGP for XMPP
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Instant Messaging.
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Also known as OX.
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.PP
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For details on usage see man profanity-ox or \f[V]/help ox\f[R].
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.PP
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Profanity wants to give the user a maximum freedom in setting up their
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system.
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So we won\[cq]t touch your GPG settings directly.
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Which means you will need to do some manual steps.
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They are described here
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.SH Generate OpenPGP key materials
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.PP
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The first step is to create a OpenPGP key pair.
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The key pair generation will be done with the \f[V]gpg\f[R] command of
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GnuPG.
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.IP
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.nf
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\f[C]
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gpg --quick-generate-key xmpp:alice\[at]domain.tld future-default default 3y
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\f[R]
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.fi
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.PP
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This command will generated a OpenPGP key with a UID
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\f[V]xmpp:alice\[at]domain.tld\f[R].
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The option \f[V]future-default\f[R] has been used to generate a
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ed25519/cv25519 key.
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The key is set to expire in threeyears.
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.PP
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Replace the Jabber ID with your JID and do \f[B]not\f[R] forget the URI
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\f[V]xmpp:\f[R] prefix.
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.PP
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Example output:
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.IP
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.nf
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\f[C]
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pub ed25519 2021-09-21 [SC] [verf\[:a]llt: 2024-09-20]
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583BAE703A801095B6B71A56BD801174B1A0B84A
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uid xmpp:alice\[at]domain.tld
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sub cv25519 2021-09-21 [E]
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\f[R]
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.fi
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.SH Export your public key
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.PP
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You need to export your public key so you can later upload it into a PEP
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node.
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It\[cq]s just a way how your chat partners can retrieve the public key
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from you.
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Use the command below to export public key:
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.PP
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Example command:
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.IP
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.nf
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\f[C]
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gpg --export \[rs]
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--export-options export-minimal \[rs]
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--export-filter \[aq]keep-uid=uid =\[ti] xmpp:alice\[at]domain.tld\[aq] \[rs]
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--export-filter \[aq]drop-subkey=usage =\[ti] a\[aq] \[rs]
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583BAE703A801095B6B71A56BD801174B1A0B84A \[rs]
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> /tmp/pep-key.gpg
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\f[R]
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.fi
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.PP
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The key will be exported to \f[V]/tmp/pep-key.gpg\f[R].
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You may check the key with the command below:
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.PP
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\f[V]gpg --show-key --with-sig-list /tmp/pep-key.gpg\f[R]
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.PP
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Keep in mind: Public keys may have some information (signatures, name,
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e-mail address).
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Be careful which data will be exported.
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The \f[V]export-options\f[R] and \f[V]export-filter\f[R] option of GnuPG
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will help you to filter the data.
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.SH Publish your key
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.PP
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You can use profanity to publish your exported key into your account
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(PEP).
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The \f[V]/ox announce\f[R] command will publish your key.
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.IP
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.nf
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\f[C]
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/ox announce /tmp/pep-key.gpg
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\f[R]
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.fi
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.PP
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The command will create two PEP node records to store the key.
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.SH Discover keys
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.PP
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To discover public keys of your partners use the \f[V]/ox discover\f[R]
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command.
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.PP
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Example output:
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.IP
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.nf
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\f[C]
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/ox discover buddy\[at]domain.tld
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Discovering Public Key for buddy\[at]domain.tld
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1234567890ABCDEF1234567890ABCDEF12345678
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\f[R]
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.fi
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.PP
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To request and import a key, you can use the \f[V]/ox request\f[R]
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command.
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.IP
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.nf
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\f[C]
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/ox request buddy\[at]domain.tld 1234567890ABCDEF1234567890ABCDEF12345678
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Requesting Public Key 1234567890ABCDEF1234567890ABCDEF12345678 for buddy\[at]domain.tld
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Public Key imported
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\f[R]
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.fi
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.PP
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The key will be imported into your gnupg keyring.
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.SH Sign the imported key
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.PP
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The key can been shown via gpg
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\f[V]gpg -k xmpp:buddy\[at]domain.tld\f[R].
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Make sure the key is the key of your buddy and sign the key with your
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key.
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.IP
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.nf
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\f[C]
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gpg --ask-cert-level --default-key 583BAE703A801095B6B71A56BD801174B1A0B84A --sign-key 1234567890ABCDEF1234567890ABCDEF12345678
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\f[R]
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.fi
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.PP
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The command \f[V]/ox contacts\f[R] will show the keys with XMPP-UID.
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The command \f[V]/ox keys\f[R] will show all known OpenPGP keys.
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.PP
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Only once you signed the key you can actually use OX with your partner.
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.SH Use OX
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.PP
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Within a chat window you can start OX via \f[V]/ox start\f[R] and stop
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it via \f[V]/ox end\f[R].
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.PP
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Messages will be send signed and encrypted.
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