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home-manager/modules/programs/gpg.nix
Bjarki Ágúst Guðmundsson 41f918499b
gpg: sane default for throw-keyids option
The [throw-keyids](https://www.gnupg.org/gph/en/manual/r2110.html)
option "hides the receiver of the encrypted data as a countermeasure
against traffic analysis." However, it also slows down decryption, and
even breaks some applications; see e.g.
https://github.com/open-keychain/open-keychain/issues/626

I think the sane default would be to leave it off, just as it is off
by default in gpg. The typical user will probably not need this level
of security, and will probably prefer a better user experience (faster
decryption and compatibility with a wider range of applications).

Closes #838
2019-09-11 19:30:26 +02:00

61 lines
1.8 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.gpg;
cfgText =
concatStringsSep "\n"
(attrValues
(mapAttrs (key: value:
if isString value
then "${key} ${value}"
else optionalString value key)
cfg.settings));
in {
options.programs.gpg = {
enable = mkEnableOption "GnuPG";
settings = mkOption {
type = types.attrsOf (types.either types.str types.bool);
example = {
no-comments = false;
s2k-cipher-algo = "AES128";
};
description = ''
GnuPG configuration options. Available options are described
in the gpg manpage:
<link xlink:href="https://gnupg.org/documentation/manpage.html"/>.
'';
};
};
config = mkIf cfg.enable {
programs.gpg.settings = {
personal-cipher-preferences = mkDefault "AES256 AES192 AES";
personal-digest-preferences = mkDefault "SHA512 SHA384 SHA256";
personal-compress-preferences = mkDefault "ZLIB BZIP2 ZIP Uncompressed";
default-preference-list = mkDefault "SHA512 SHA384 SHA256 AES256 AES192 AES ZLIB BZIP2 ZIP Uncompressed";
cert-digest-algo = mkDefault "SHA512";
s2k-digest-algo = mkDefault "SHA512";
s2k-cipher-algo = mkDefault "AES256";
charset = mkDefault "utf-8";
fixed-list-mode = mkDefault true;
no-comments = mkDefault true;
no-emit-version = mkDefault true;
keyid-format = mkDefault "0xlong";
list-options = mkDefault "show-uid-validity";
verify-options = mkDefault "show-uid-validity";
with-fingerprint = mkDefault true;
require-cross-certification = mkDefault true;
no-symkey-cache = mkDefault true;
use-agent = mkDefault true;
};
home.packages = [ pkgs.gnupg ];
home.file.".gnupg/gpg.conf".text = cfgText;
};
}