From 8b2219bfa2da36e7809588ef723a10483a6e137f Mon Sep 17 00:00:00 2001 From: Francis Rowe Date: Wed, 05 Nov 2014 20:52:36 -0500 Subject: Documentation: *major* cleanup. Cleanup was long overdue. Old structure was messy and inefficient. --- (limited to 'docs/howtos/encrypted_trisquel.html') diff --git a/docs/howtos/encrypted_trisquel.html b/docs/howtos/encrypted_trisquel.html deleted file mode 100644 index 7599e02..0000000 --- a/docs/howtos/encrypted_trisquel.html +++ /dev/null @@ -1,316 +0,0 @@ - - - - - - - - - Installing Trisquel GNU/Linux with full disk encryption (including /boot) - - - -
-

Installing Trisquel GNU/Linux with full disk encryption (including /boot)

- -
- -

- Libreboot uses the GRUB payload - by default, which means that the GRUB configuration file - (where your GRUB menu comes from) is stored directly alongside libreboot - and it's GRUB payload executable, inside - the flash chip. In context, this means that installing distributions and managing them - is handled slightly differently compared to traditional BIOS systems. -

- -

- On most systems, the /boot partition has to be left unencrypted while the others are encrypted. - This is so that GRUB, and therefore the kernel, can be loaded and executed since the firmware - can't open a LUKS volume. Not so with libreboot! Since GRUB is already included directly as a - payload, even /boot can be encrypted. This protects /boot from tampering by someone with physical - access to the machine. -

- -

- This works in Trisquel 7, and probably Trisquel 6. Boot the 'net installer' (Install Trisquel in Text Mode). How to boot a GNU/Linux installer. -

- -

- Set a strong user password (ideally above 40 characters, of lowercase/uppercase, numbers and symbols). -

- -

- when the installer asks you to setup - encryption (ecryptfs) for your home directory, select 'Yes' if you want to: LUKS is already secure and performs well. Having ecryptfs on top of it - will add noticeable performance penalty, for little security gain in most use cases. This is therefore optional, and not recommended. - Choose 'no'. -

- -

- - Your user password should be different than the LUKS password which you will set later on. - Your LUKS password should, like the user password, be secure. - -

- -

Partitioning

- -

Choose 'Manual' partitioning:

- - -

Further partitioning

- -

- Now you are back at the main partitioning screen. You will simply set mountpoints and filesystems to use. -

- - -

Kernel

- -

- Installation will ask what kernel you want to use. linux-generic is fine. -

- -

Tasksel

- -

- Choose "Trisquel Desktop Environment" if you want GNOME, - "Trisquel-mini Desktop Environment" if you - want LXDE or "Triskel Desktop Environment" if you want KDE. - If you want to have no desktop (just a basic shell) - when you boot or if you want to create your own custom setup, then choose nothing here (don't select anything). - You might also want to choose some of the other package groups; it's up to you. -

- -

Postfix configuration

- -

- If asked, choose "No Configuration" here (or maybe you want to select something else. It's up to you.) -

- -

Install the GRUB boot loader to the master boot record

- -

- Choose 'Yes'. It will fail, but don't worry. Then at the main menu, choose 'Continue without a bootloader'. - You could also choose 'No'. Choice is irrelevant here. -

- -

- You do not need to install GRUB at all, since in libreboot you are using the GRUB payload (for libreboot) to boot your system directly. -

- -

Clock UTC

- -

- Just say 'Yes'. -

- -

- Booting your system -

- -

- At this point, you will have finished the installation. At your GRUB payload, press C to get to the command line. -

- -

- Do that:
- grub> cryptomount -a (ahci0,msdos1)
- grub> set root='lvm/buzz-distro'
- grub> linux /vmlinuz root=/dev/mapper/buzz-distro cryptdevice=/dev/mapper/buzz-distro:root
- grub> initrd /initrd.img
- grub> boot -

- -

- ecryptfs -

- -

- If you didn't encrypted your home directory, then you can safely ignore this section. -

- -

- Immediately after logging in, do that:
- $ sudo ecryptfs-unwrap-passphrase -

- -

- This will be needed in the future if you ever need to recover your home directory from another system, so write it down and keep the note - somewhere secret. Ideally, you should memorize it and then burn the note (or not even write it down, and memorize it still)> -

- -

- Modify grub.cfg (CBFS) -

- -

- Now you need to set it up so that the system will automatically boot, without having to type a bunch of commands. -

- -

- Modify your grub.cfg (in the firmware) using this tutorial; - just change the default menu entry 'Load Operating System' to say this inside: -

- -

- cryptomount -a (ahci0,msdos1)
- set root='lvm/buzz-distro'
- linux /vmlinuz root=/dev/mapper/buzz-distro cryptdevice=/dev/mapper/buzz-distro:root
- initrd /initrd.img -

- -

- Additionally, you should set a GRUB password. This is not your LUKS password, but it's a password that you have to enter to see - GRUB. This protects your system from an attacker simply booting a live USB and re-flashing your firmware. This should be different than your LUKS passphrase and user password. -

- -

- The GRUB utility can be used like so:
- $ grub-mkpasswd-pbkdf2 -

- -

- Give it a password (remember, it has to be secure) and it'll output something like:
- grub.pbkdf2.sha512.10000.711F186347156BC105CD83A2ED7AF1EB971AA2B1EB2640172F34B0DEFFC97E654AF48E5F0C3B7622502B76458DA494270CC0EA6504411D676E6752FD1651E749.8DD11178EB8D1F633308FD8FCC64D0B243F949B9B99CCEADE2ECA11657A757D22025986B0FA116F1D5191E0A22677674C994EDBFADE62240E9D161688266A711 -

- -

- Put that in the grub.cfg (the one for CBFS inside the ROM) before the 'Load Operating System' menu entry like so (example):
-

- 
-set superusers="root"
-password_pbkdf2 root grub.pbkdf2.sha512.10000.711F186347156BC105CD83A2ED7AF1EB971AA2B1EB2640172F34B0DEFFC97E654AF48E5F0C3B7622502B76458DA494270CC0EA6504411D676E6752FD1651E749.8DD11178EB8D1F633308FD8FCC64D0B243F949B9B99CCEADE2ECA11657A757D22025986B0FA116F1D5191E0A22677674C994EDBFADE62240E9D161688266A711
-
- -

- Obviously, replace it with the correct hash that you actually got for the password that you entered. Meaning, not the hash that you see above! -

- -

- After this, you will have a modified ROM with the menu entry for cryptomount, and the entry before that for the GRUB password. Flash the modified ROM - using this tutorial. -

- -

- Update Trisquel -

- -

- $ sudo apt-get update
- $ sudo apt-get upgrade -

- -

- Conclusion -

- -

- If you followed all that correctly, you should now have a fully encrypted system. -

- -
- -

- Copyright © 2014 Francis Rowe <info@gluglug.org.uk>
- This document is released under the Creative Commons Attribution-ShareAlike 4.0 International Public License and all future versions. - A copy of the license can be found at ../license.txt. -

- -

- This document is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See ../license.txt for more information. -

- - - -- cgit v0.9.1