Commit graph

41 commits

Author SHA1 Message Date
Moritz Maxeiner e96f58ef5c Implement muli-user authentication for yubikey pba, i.e. multiple users can now share a single luks keyslot.
This is achieved by having multiple lines per storage file, one for each user (if the feature is enabled); each of these
lines has the same format as would be the case for the userless authentication, except that they are prepended with a
SHA-512 of the user's id.
2014-01-29 17:20:05 +01:00
Moritz Maxeiner 20cfaf0faa Change the crypt-storage file to be hex encoded instead of raw binary. To update from the previous configuration, convert your crypt-storage file from raw binary to hex. 2014-01-29 13:58:35 +01:00
Moritz Maxeiner cce9712331 Enable two-factor authentication by default. Add proper descriptions to attributes. 2014-01-29 12:55:32 +01:00
Moritz Maxeiner 45b1ffb8db Cosmetic change to yubikey detection 2014-01-28 20:39:46 +01:00
Moritz Maxeiner 407a770161 Rewrite as a pre-boot authentication module (mostly) comforming to the design specification of
'YubiKey Integration for Full Disk Encryption Pre-Boot Authentication (Copyright) Yubico, 2011 Version: 1.1'.

Used binaries:
  * uuidgen - for generation of random sequence numbers
  * ykchalresp - for challenging a Yubikey
  * ykinfo - to check if a Yubikey is plugged in at boot (fallback to passphrase authentication otherwise)
  * openssl - for calculation of SHA-1, HMAC-SHA-1, as well as AES-256-CTR (de/en)cryption

Main differences to the specification mentioned above:
  * No user management (yet), only one password+yubikey per LUKS device
  * SHA-512 instead of CRC-16 for checksum

Main differences to the previous implementation:
  * Instead of changing the key slot of the LUKS device each boot,
    the actual key for the LUKS device will be encrypted itself
  * Since the response for the new challenge is now calculated
    locally with openssl, the MITM-USB-attack with which previously
    an attacker could obtain the new response (that was used as the new
    encryption key for the LUKS device) by listening to the
    Yubikey has ideally become useless (as long as uuidgen can
    successfuly generate new random sequence numbers).

Remarks:
  * This is not downwards compatible to the previous implementation
2014-01-28 04:02:51 +01:00
Moritz Maxeiner 333f5caaf9 Implement authentication for a LUKS device with a yubikey (HMAC-SHA1); supports simple challenge-response and two-factor authentication 2014-01-25 03:33:09 +01:00
Shea Levy ca7805be94 systemd: Enable specifying extra config files for a unit
This will allow overriding package-provided units, or overriding only a
specific instance of a unit template.

Signed-off-by: Shea Levy <shea@shealevy.com>
2014-01-18 11:10:39 -05:00
Shea Levy 48daf624c5 Add module to use kmscon instead of linux-console for VTs
This required some changes to systemd unit handling:

* Add an option to specify that a unit is just a symlink
* Allow specified units to overwrite systemd-provided ones
* Have gettys.target require autovt@1.service instead of getty@1.service

Signed-off-by: Shea Levy <shea@shealevy.com>
2014-01-15 08:17:19 -05:00
Shea Levy b0000b29af gummiboot module: Don't use obsolete environment.nix option
Signed-off-by: Shea Levy <shea@shealevy.com>
2014-01-05 15:53:39 -05:00
Lluís Batlle i Rossell 152da7671c nixos initrd: load atkbd, not xtkbd
I don't think anyone has a XT keyboard in a computer running nixos.
2013-12-23 09:01:45 +01:00
Song Wenwu c4885173b6 systemd: add services.journald.extraConfig option 2013-11-30 22:42:01 +01:00
Eelco Dolstra 9ee30cd9b5 Add support for lightweight NixOS containers
You can now say:

  systemd.containers.foo.config =
    { services.openssh.enable = true;
      services.openssh.ports = [ 2022 ];
      users.extraUsers.root.openssh.authorizedKeys.keys = [ "ssh-dss ..." ];
    };

which defines a NixOS instance with the given configuration running
inside a lightweight container.

You can also manage the configuration of the container independently
from the host:

  systemd.containers.foo.path = "/nix/var/nix/profiles/containers/foo";

where "path" is a NixOS system profile.  It can be created/updated by
doing:

  $ nix-env --set -p /nix/var/nix/profiles/containers/foo \
      -f '<nixos>' -A system -I nixos-config=foo.nix

The container configuration (foo.nix) should define

  boot.isContainer = true;

to optimise away the building of a kernel and initrd.  This is done
automatically when using the "config" route.

On the host, a lightweight container appears as the service
"container-<name>.service".  The container is like a regular NixOS
(virtual) machine, except that it doesn't have its own kernel.  It has
its own root file system (by default /var/lib/containers/<name>), but
shares the Nix store of the host (as a read-only bind mount).  It also
has access to the network devices of the host.

Currently, if the configuration of the container changes, running
"nixos-rebuild switch" on the host will cause the container to be
rebooted.  In the future we may want to send some message to the
container so that it can activate the new container configuration
without rebooting.

Containers are not perfectly isolated yet.  In particular, the host's
/sys/fs/cgroup is mounted (writable!) in the guest.
2013-11-27 17:14:10 +01:00
Eelco Dolstra 953f12995b nscd: Fix LD_LIBRARY_PATH
This ensures that nscd can find the NSS modules.

Fixes #1248.
2013-11-26 18:38:22 +01:00
Eelco Dolstra 14cd8bc248 Allow services to specify a pre-stop script 2013-11-26 18:24:55 +01:00
Eelco Dolstra 2b1f212494 Disable various services when running inside a container 2013-11-26 18:19:45 +01:00
Eelco Dolstra dc87f8e080 Check whether fileSystems defines the root FS 2013-11-18 18:04:16 +01:00
Eelco Dolstra 8951be2d80 Allow overrides to work for unit options 2013-11-18 18:04:16 +01:00
Eelco Dolstra 33cb0bbb4b Use types.lines for script/preStart/postStart/postStop 2013-11-18 18:04:16 +01:00
Eelco Dolstra 5620e69b5d Apply better type checking to unitConfig/serviceConfig/...
In particular, complain if two modules define the same systemd option.
2013-11-18 18:04:16 +01:00
Eelco Dolstra f8a034172a Fix broken Conflicts options 2013-11-18 18:04:16 +01:00
Eelco Dolstra 08a85c2152 Allow building/testing individual systemd units 2013-11-18 18:04:16 +01:00
Ricardo M. Correia 36a05c7b15 systemd: Add systemd.extraConfig option for /etc/systemd/system.conf 2013-11-16 16:50:59 +01:00
Ricardo M. Correia e0171ef026 systemd: Change services.logind.extraConfig type to types.lines 2013-11-16 16:50:59 +01:00
Eelco Dolstra 4cada34b7f Properly handle unit names with dashes in them
We ended up with files in /etc/systemd/system called
"bigx2ddata.mount.wants" rather than "big\x2ddata.mount.wants".
2013-11-12 16:58:36 +01:00
Eelco Dolstra 408b8b5725 Add lots of missing option types 2013-10-30 18:47:43 +01:00
Eelco Dolstra d882e19662 Shut up "failed to resume" warning if there is no resume device 2013-10-30 18:47:43 +01:00
Eelco Dolstra be5d3a59dd Clean up some option examples 2013-10-30 18:47:43 +01:00
Eelco Dolstra 70a2c54527 Strictly check the arguments to mkOption
And fix various instances of bad arguments.
2013-10-30 15:35:09 +01:00
Eelco Dolstra 4680af6a93 Add some option types 2013-10-30 14:57:42 +01:00
Eelco Dolstra 862e3dd977 Substitute "types.uniq types.string" -> "types.str" 2013-10-30 14:57:42 +01:00
Eelco Dolstra 9a8516438e Fix NixOps evaluation 2013-10-28 22:45:57 +01:00
Eelco Dolstra d5047faede Remove uses of the "merge" option attribute
It's redundant because you can (and should) specify an option type, or
an apply function.
2013-10-28 22:45:56 +01:00
Eelco Dolstra a40583e7e4 Fix bogus mkOption types
Among others, systemd unit options were not being type-checked because
of this.  mkOption should really check its arguments better...
2013-10-28 22:45:56 +01:00
Eelco Dolstra 1408ac51a4 Add missing types 2013-10-28 22:45:56 +01:00
Eelco Dolstra 4b1a9dd00b Remove uses of mkFixStrictness
mkFixStrictness is no longer needed, woohoo!
2013-10-28 22:45:55 +01:00
Eelco Dolstra c4149c7b56 Fix evaluation error in the ISOs 2013-10-24 02:03:10 +02:00
Eelco Dolstra a3777ba4f9 Remove dependencies on the Nixpkgs location 2013-10-23 20:08:23 +02:00
Eelco Dolstra 8f4c5b05d5 Add a way to define obsolete options that have no replacement 2013-10-23 20:08:22 +02:00
Eelco Dolstra b33657df03 grub: Make assertion lazier 2013-10-17 13:30:49 +02:00
Shea Levy a63b4dc555 Remove old efi boot stub bootloader
Signed-off-by: Shea Levy <shea@shealevy.com>
2013-10-10 10:54:35 -04:00
Eelco Dolstra 5c1f8cbc70 Move all of NixOS to nixos/ in preparation of the repository merge 2013-10-10 13:28:20 +02:00