modules/common/gnupg.nix


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{ config, lib, ... }:
with lib;
let
  cfg = config.nixfiles.modules.gnupg;
in
{
  options.nixfiles.modules.gnupg.enable = mkEnableOption "GnuPG";

  config = mkIf cfg.enable {
    hm.programs.gpg = {
      enable = true;

      settings =
        {
          display-charset = "utf-8";
          enable-progress-filter = true;
          fixed-list-mode = true;
          keyid-format = "0xlong";
          no-comments = true;
          no-emit-version = true;
          no-greeting = true;
          with-fingerprint = true;
          throw-keyids = false;

          use-agent = true;

          armor = true;

          no-random-seed-file = true;

          list-options = "show-uid-validity";
          verify-options = "show-uid-validity";
        }
        // (
          let
            cipherAlgos = [
              "AES256"
              "AES192"
              "AES"
            ];
            digestAlgos = [
              "SHA512"
              "SHA384"
              "SHA256"
              "SHA224"
            ];
            compressionAlgos = [
              "ZLIB"
              "BZIP2"
              "ZIP"
              "Uncompressed"
            ];

            cs = concatStringsSep " ";
          in
          {
            default-preference-list = cs (cipherAlgos ++ digestAlgos ++ compressionAlgos);

            personal-cipher-preferences = cs cipherAlgos;
            personal-digest-preferences = cs digestAlgos;
            personal-compress-preferences = cs compressionAlgos;

            s2k-cipher-algo = head cipherAlgos;
            s2k-digest-algo = head digestAlgos;

            digest-algo = head digestAlgos;
            cert-digest-algo = head digestAlgos;
          }
        );
    };
  };
}