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Re: Possible for full-disk encryption to encrypt /boot as well?

From Pascal Hambourg <pascal@plouf.fr.eu.org>
Newsgroups linux.debian.user
Subject Re: Possible for full-disk encryption to encrypt /boot as well?
Date 2018-05-26 10:20 +0200
Message-ID <vTCAF-OH-5@gated-at.bofh.it> (permalink)
References <vTq6t-1wc-1@gated-at.bofh.it> <vTqSS-21j-7@gated-at.bofh.it> <vTvpv-4HK-3@gated-at.bofh.it>
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Le 26/05/2018 à 02:33, Robert Dodier a écrit :
> On Fri, May 25, 2018 at 12:44 PM, Pascal Hambourg
> <pascal@plouf.fr.eu.org> wrote:
> 
>> Why do you want an encrypted /boot ? It does not usually contain any
>> sensitive information. Encrypted /boot is not tamper-proof unless extra
>> steps are taken to protect the first stage boot such as booting from
>> write-protected, authenticated or removable media.
> 
> Thanks for your reply. I am working for an organization which requires
> computers to be full disk encrypted. They support Windows, but if I
> want to run Linux, I'm on my own. So to be precise I need something
> which is strictly comparable to whatever is provided by Symantec full
> disk encryption for Windows. If I can achieve that, I'll be in
> business.

I don't know how Symantec's "full" disk encryption works, but AFAIK a 
boot disk cannot be fully encrypted, unless the platform firmware can 
handle the encryption format. IIUC Coreboot or Libreboot may do it. 
Otherwise the bootstrap code must not be encrypted so that the platform 
firmware can load and run it. Even if /boot is encrypted, the first 
stage of the boot loader (GRUB boot image and core image if using 
BIOS/legacy boot, the EFI partition if using EFI boot) cannot not be 
encrypted.

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Thread

Possible for full-disk encryption to encrypt /boot as well? Robert Dodier <robert.dodier@gmail.com> - 2018-05-25 21:00 +0200
  Re: Possible for full-disk encryption to encrypt /boot as well? Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-05-25 21:50 +0200
    Re: Possible for full-disk encryption to encrypt /boot as well? Robert Dodier <robert.dodier@gmail.com> - 2018-05-26 02:40 +0200
      Re: Possible for full-disk encryption to encrypt /boot as well? Abdullah Ramazanoğlu <ar018@yahoo.com> - 2018-05-26 03:20 +0200
      Re: Possible for full-disk encryption to encrypt /boot as well? Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-05-26 10:20 +0200
        Re: Possible for full-disk encryption to encrypt /boot as well? Robert Dodier <robert.dodier@gmail.com> - 2018-05-26 18:00 +0200
          Re: Possible for full-disk encryption to encrypt /boot as well? Curt <curty@free.fr> - 2018-05-26 19:00 +0200
            Re: Possible for full-disk encryption to encrypt /boot as well? David Wright <deblis@lionunicorn.co.uk> - 2018-05-26 21:10 +0200
  Re: Possible for full-disk encryption to encrypt /boot as well? Celejar <celejar@gmail.com> - 2018-05-25 22:00 +0200
  Re: Possible for full-disk encryption to encrypt /boot as well? David Christensen <dpchrist@holgerdanske.com> - 2018-05-27 02:30 +0200
    Re: Possible for full-disk encryption to encrypt /boot as well? Paul Johnson <baloo@ursamundi.org> - 2018-05-27 06:20 +0200
      Re: Possible for full-disk encryption to encrypt /boot as well? David Christensen <dpchrist@holgerdanske.com> - 2018-05-27 07:50 +0200
        Re: Possible for full-disk encryption to encrypt /boot as well? Paul Johnson <baloo@ursamundi.org> - 2018-05-27 08:50 +0200
          Re: Possible for full-disk encryption to encrypt /boot as well? David Christensen <dpchrist@holgerdanske.com> - 2018-05-27 19:40 +0200

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