Re: [EXT] Re: Questions about encrypting user homes by default

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On Mon, Sep 23, 2019 at 09:29:42AM -0600, Chris Murphy wrote:
> > On Mon, Sep 23, 2019 at 4:36 pm, Sheogorath
> > <sheogorath@xxxxxxxxxxxxxxxxxxx> wrote:
> > > Doesn't make any sense to me. The reason to get a per-user encryption
> > > sounds useful in order to reduce the leaking of user data when we have
> > > multiple users per device. /home only encryption protects whom?
> 
> It protects the users from 3rd parties. If POSIX permissions are
> inadequate separation between users (and I agree that it could be),
> then only encrypting user home directories is also inadequate. There
> are ample attack vectors that remain to anyone with physical access.
> 
> 
> > > An attacker with access to the disk can install malware and put it in
> > > auto start. So there is no real protection here. When we encrypt
> > > `/home`
> > > we can encrypt the rest as well.
> 
> The attacker can just as straightforwardly inject malware into the
> initramfs. In the present Anaconda full disk encryption model, which
> the encryption subgroup prefers to avoid for various UI/Ux reasons
> including limited a11y, i18n functionality, the /boot volume is not
> encrypted.

How about integrating with OPAL SSD/HDD hardware encryption?  The sedutil tool is in Fedora.  This would encrypt /boot too.
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