OpenPGP
From Mcabber Wiki
Contents |
MCabber OpenPGP support
This page explains how to set up PGP support in mcabber.
You will need mcabber version >= 0.9.0.
Building mcabber with OpenPGP support
Note: You need libgpgme > 1.0.0 (for example, libgpgme11 & libgpgme11-dev in Debian) to build mcabber with OpenPGP support.
Enabling OpenPGP
Once mcabber is built with PGP support, you will have to set it up.
In the configuration file, enable pgp and set pgp_private_key to your key id.
Your key id can be found with the following command:
gpg --list-keys --keyid-format long your_name
Example (in $HOME/.mcabber/mcabberrc):
set pgp = 1 set pgp_private_key = "E3E6A9C1A6A013D3"
Encrypting messages
Now when you start mcabber, it should ask for your passphrase (unless you put it in your configuration file or you use gpg-agent).
If you want to know if a contact is using PGP, select the contact and use /info. If (s)he is, it should display something like
PGP key id: E2C4C9A1601A5A4
Last PGP signature: unknown
The signature is "unknown", because we don't have the contact's key. We could get it with gpg, for example.
gpg --recv-keys E2C4C9A1601A5A4
Then, wait for the next presence message.
If the contact has your key and you have their key, you should have bidirectional encrypted messages.
Per-contact settings
You can provide a PGP key to be used for a given Jabber user or disable PGP on a per-account basis, using the command /pgp. If you provide a KeyId for a contact, it will be compared to the key the contact uses to sign their presence/messages and it will be used for all outgoing encrypted messages (by default, mcabber will use the contact signature's key).
/pgp disable foo@bar.org /pgp setkey bar@foo.net C9940A9BB0B92210
The command /pgp can be used in the configuration file (without the leading /).