From e18ad25efd2768e597aaa9f94071ed47cb65803f Mon Sep 17 00:00:00 2001
From: Ben Sima <ben@bsima.me>
Date: Mon, 31 Jan 2022 16:45:55 -0500
Subject: yubikey login on helium

This allows me to login and sudo with *either* a password or my yubikey.

I also had to setup my yubikey with the instructions here:
https://nixos.wiki/wiki/Yubikey#Logging-in

Basically use ykman and ykpamcfg to generate a challenge-response setup
on slot 2 of my yubikey. The pam config compares the key response with
the ~/.yubico/challenge-* file in order to authenticate. I think pam
uses the ~/.yubico/authorized_keys file to know to which yubikey to send
the challenge, but I'm not sure on that one.
---
 lib/common.nix | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'lib/common.nix')

diff --git a/lib/common.nix b/lib/common.nix
index c977cdb..0fa9302 100644
--- a/lib/common.nix
+++ b/lib/common.nix
@@ -32,6 +32,10 @@ in
     keyboard.options = [ "caps:ctrl_modifier" ];
 
     file = {
+      yubikeys = {
+        source = ./authorized_yubikeys;
+        target = ".yubico/authorized_yubikeys";
+      };
       editorconfig = {
         source = ./editorconfig;
         target = ".editorconfig";
-- 
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