Git-Mirrors/qubes-doc
1
0
Fork 0
mirror of https://github.com/QubesOS/qubes-doc.git synced 2024-10-01 01:25:40 -04:00
Code Issues Packages Projects Releases Wiki Activity

Create Manual Encryption Configuration page

Browse Source
This commit is contained in:
Andrew David Wong 2016-06-28 05:38:27 -07:00
parent 49603789d2
commit 820825873b
No known key found for this signature in database
GPG Key ID: 8CE137352A019A17
1 changed files with 73 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
installing/encryption-config.md Normal file
View File

@ -0,0 +1,73 @@
---
layout: doc
title: Manual Encryption Configuration
permalink: /doc/encryption-config/
---
Manual Encryption Configuration
===============================
The Qubes installer uses `cryptsetup` (LUKS/dm-crypt) under the hood. You can
configure the encryption options before installing Qubes as follows:
01. Boot into the installer. Wait for first GUI screen to appear where it asks
about language/localization .
02. Press `Ctrl+Alt+F2` on your keyboard to escape to a shell session. (If you
are on a laptop, and your laptop keyboard des not work properly, you may have
to plug in a USB keyboard.)
03. Check and adjust the partitioning on the drive you plan to install to with
`parted`. For example, you can leave the partition table as `msdos/MBR` type,
then create a 500 MB ext4 boot partition, a 10 GB swap partition, and use the
rest of the drive (minus overprovisioning space for SSDs) for the root
partition.
04. Run to set the LUKS options as you like and set the passphrase:
# cryptsetup <options> luksFormat <partition>
For example:
# cryptsetup -v --hash sha512 --cipher aes-xts-plain64 --key-size 512 --use-random --iter-time 5000 --verify-passphrase luksFormat /dev/sda2
05. (Optional) Make sure the new container works:
# cryptsetup open /dev/sda2 test
# mkfs.ext4 /dev/mapper/test
# mount /dev/mapper/test /mnt/test
# umount /dev/mapper/test
# cryptsetup close test
06. Everything should be set with the preparation, so press `Ctrl+Alt+F7` to go
back to the GUI installer.
07. Continue installing as usual. When you get to the disk
partitioning/allocation part, pay attention.
08. When you select the disk, it may complain about only having a few MB of
space. Uncheck the "Encrypt and ask me about the passphrase later" box and
press the "Custom" button.
09. In this menu, you should see the unencrypted boot partition and the encrypted
LUKS partitions you created earlier. You must unlock the LUKS partition here,
i.e. enter passphrases.
10. Set the mount points on these partitions once they are decrypted. (This part
may be a bit glitchy, but you should be able to get it working after a
reboot.) For example, set the mount point for the primary LUKS partition as
`/`. Make sure the "Encrypted" box stays checked and that you check the
"Format" box (required for the root partition). Similarly, set `/boot` as
the mount point for the unencrypted boot partition and `swap` as the mount
point for the swap partition.
11. Now the install should complete without any other issues. When it's
finished, you'll have LUKS-encrypted partitions with the options you chose
above. You can verify this command in dom0:
sudo cryptsetup luksDump <partition>
For example:
sudo cryptsetup luksDump /dev/sda2
-----
These instructions were adapted from those provided by Qubes user [Jake] on the
`qubes-users` [mailing list].
[Jake]: https://groups.google.com/d/msg/qubes-users/cykOGRa0Im0/vK7j8aQOXkYJ
[mailing list]: /mailing-lists/