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Setting Signed Messages with Mutt
Overview
Mutt, a popular open-source email client, allows you to sign your emails to verify their authenticity. This guide will walk you through the process of setting up signed messages with Mutt using a PKCS#12 file.
Prerequisites
- A PKCS#12 file containing your private key, leaf certificate, and intermediate certificates.
Steps
-
Install the necessary tools:
sudo apt-get install openssl -
Extract the private key and certificates from the PKCS#12 file:
openssl pkcs12 -in Actalis.p12 -nocerts -out private.key openssl pkcs12 -in Actalis.p12 -out cert.pem -nodes -
Import the private key into Mutt:
Add the following lines to your
.muttrcfile:set pgp_keyfile = "private.key" set pgp_canon = 6 set pgp_digest = sha512 set pgp_binary = $HOME/.gnupg/bin/gpg -
Import the certificates into your GnuPG keyring:
gpg --import cert.pem -
Verify the imported key:
gpg --list-keys -
Set the default action for signing messages in Mutt:
set signature_default = sign -
Test the setup by composing a new message and sending it:
mutt -s "Test Signature" [email protected]Follow the prompts to sign the message.