Add signkey create

- Add a CLI command for creating a new signing key.

e2e-tests/tests/60_signing.sh

@@ -30,9 +30,7 @@ if [ -f /var/mail/juliette ] ; then
 
     if [ "$SIGN_FPR" != "$FOUND_FPR" ] ; then
       echo "Found wrong fingerprint '$FOUND_FPR' - expected '$SIGN_FPR'"
-      RESULT_CODE=1
-    else
-      RESULT_CODE=0
+      exit 1
     fi
   else
     echo "no encryption detected"
@@ -43,3 +41,31 @@ else
   exit 1
 fi
 
+echo "set new signing key"
+
+SIGN_FPR=$($HUSK_BIN --config config/config.toml signkey create | cut -d ':' -f 2 | tr -d ' ')
+echo "new signing key $SIGN_FPR"
+
+# remove old mail
+rm /var/mail/juliette
+
+echo "send mail to juliette@example.com"
+send_test_mail juliette@example.com
+
+if [ -f /var/mail/juliette ] ; then
+  if grep -q "BEGIN PGP MESSAGE" /var/mail/juliette ; then
+
+    FOUND_FPR=$(sq packet dump /var/mail/juliette | grep "Issuer Fingerprint:" | cut -d ':' -f 2 | tr -d ' ')
+
+    if [ "$SIGN_FPR" != "$FOUND_FPR" ] ; then
+      echo "Found wrong fingerprint '$FOUND_FPR' - expected '$SIGN_FPR'"
+      exit 1
+    fi
+  else
+    echo "no encryption detected"
+    exit 1
+  fi
+else
+  echo "no mail detected"
+  exit 1
+fi