nixos-config/images/yubikey-image.nix

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# NixOS livesystem to generate yubikeys in an air-gapped manner
# screenshot: https://dl.thalheim.io/wmxIqucOEo2xuLk0Ut45fQ/yubikey-live-system.png
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# $ nix-shell -p nixos-generate --run "nixos-generate -f iso -c yubikey-image.nix"
{ pkgs, ... }:
let
guide = pkgs.stdenv.mkDerivation {
name = "yubikey-guide-2019-01-21.html";
src = pkgs.fetchFromGitHub {
owner = "drduh";
repo = "YubiKey-Guide";
rev = "035d98ebbed54a0218ccbf23905054d32f97508e";
sha256 = "0rzy06a5xgfjpaklxdgrxml24d0vhk78lb577l3z4x7a2p32dbyq";
};
buildInputs = [ pkgs.pandoc ];
installPhase =
"pandoc --highlight-style pygments -s --toc README.md -o $out";
};
in
{
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environment.interactiveShellInit = ''
export GNUPGHOME=/run/user/$(id -u)/gnupghome
if [ ! -d $GNUPGHOME ]; then
mkdir $GNUPGHOME
fi
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cp ${
pkgs.fetchurl {
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url = "https://raw.githubusercontent.com/drduh/config/662c16404eef04f506a6a208f1253fee2f4895d9/gpg.conf";
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sha256 = "118fmrsn28fz629y7wwwcx7r1wfn59h3mqz1snyhf8b5yh0sb8la";
}
} "$GNUPGHOME/gpg.conf"
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echo "\$GNUPGHOME has been set up for you. Generated keys will be in $GNUPGHOME."
'';
environment.systemPackages = with pkgs; [
yubikey-personalization
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yubikey-personalization-gui
yubikey-manager
yubikey-manager-qt
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cryptsetup
pwgen
midori
paperkey
gnupg
ctmg
];
services.udev.packages = with pkgs; [ yubikey-personalization ];
services.pcscd.enable = true;
users.extraUsers.root.initialHashedPassword = "";
# make sure we are air-gapped
networking.wireless.enable = false;
networking.dhcpcd.enable = false;
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services.getty.helpLine = "The 'root' account has an empty password.";
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services.displayManager = {
defaultSession = "xfce";
autoLogin = {
enable = true;
user = "root";
};
};
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services.xserver = {
enable = true;
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desktopManager = {
xterm.enable = false;
xfce.enable = true;
};
displayManager = {
sessionCommands = ''
${pkgs.midori}/bin/midori ${guide} &
'';
};
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};
}