From a4b0fad555989e17b5f8d5f82088dba0d768063b Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <m@m-chrzan.xyz>
Date: Thu, 25 Mar 2021 11:53:10 +0100
Subject: Update GPG

---
 gpg.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/gpg.md b/gpg.md
index 8b7cc2f..b76bba3 100644
--- a/gpg.md
+++ b/gpg.md
@@ -25,6 +25,10 @@ Add `--armor` to make it readable-ASCII encoded.
 
     gpg --armor --export <ID> [--output <file>]
 
+## Import key
+
+    gpg --import <key file>
+
 ## Asymmetric crypto
 
     gpg --encrypt [--sign] [-u <signer>] [--recipient <receipient>] file
@@ -40,6 +44,16 @@ Add new email to key:
     > save
     # saves and quits
 
+Sign a key (changes trust from `unknown` to `full`), apparently necessary for
+use in mutt:
+
+    gpg --edit-key <key>
+    > sign
+    > save
+
+    # specify the signing key (by default it's your first one)
+    gpg --local-user <signing key> --edit-key <key to sign>
+
 ## gpg-agent
 
 `gpg-agent` is a daemon that e.g. provides a passphrase cache for GPG. Running
-- 
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