rec {
  keys = {
    # yubikey ssh key
    "yubikey" = {
      key =
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILRs6zVljIlQEZ8F+aEBqqbpeFJwCw3JdveZ8TQWfkev cardno:000615938515";
    };
    # levitation ssh key
    "levitation" = {
      key =
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIG0zeLTlg++shIYcqxksDVkTtHS3MIvlqPIIW+9pufQa nathan@levitation";
    };
    # WSL key
    "wsl" = {
      key =
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGXEV5lvLQ1CcPuJANv5AiYxtcRFEYXD5nODCazWnYC5 nathan@mccarty.io";
    };
    # Phone key
    "phone" = {
      key =
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFR0zpmBCb0iEOeeI6SBwgucddNzccfQ5Zmdgib5iSmF nix-on-droid@localhost";
    };
    # Tablet key
    "tablet" = {
      key =
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKltqneJjfdLjOvnWQC2iP7hP7aTYkURPiR8LFjB7z87 nix-on-droid@localhost";
    };
    # Macbook key
    "extremophile" = {
      key =
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPLIZC4A4OhpTvfoL5jeMb1Ong9CwZ/URCYZL6y4Gp7b nathan@extremophile.local";
    };
    # vm key
    "productivity-vm" = {
      key =
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMgtdTJThr5/vfUswQb3ee6A++W1OxAOGFQJTE8xDuHv nathan@productivity-vm";
    };
    # oracles key
    "oracles" = {
      key =
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAj6He0uDnJAZsfywoUwOSAnxqpbO9UnfcAV78a1SUGa nathan@oracles";
    };
    # fusion key
    "fusion" = {
      key =
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICILeBcpPVs12pDnsOPyDVwnwReCbrqzXMF+cV5bWCCa nathan@fusion";
    };
  };
  list = map (x: x.key) (builtins.attrValues keys);
  allowedSigners = builtins.concatStringsSep "\n" (map (x:
    "${
      builtins.concatStringsSep ","
      (x.emails or [ "*@mccarty.io" "*@stranger.systems" ])
    } ${x.key}") (builtins.attrValues keys));
}