From: Michal Marek <mmarek-AlSwsSmVLrQ@public.gmane.org>
Subject: Re: [RFC V4 PATCH 00/15] Signature verification of hibernate snapshot
Date: Thu, 26 Sep 2013 14:21:23 +0200
Message-ID: <524426C3.1050501@suse.cz>
References: <Pine.LNX.4.44L0.1309251723001.26508-100000@netrider.rowland.org> <1380161957.32302.42.camel@linux-s257.site> <1380192218.32302.69.camel@linux-s257.site> <20130926120621.GA7537@amd.pavel.ucw.cz>
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Cc: joeyli <jlee-IBi9RG/b67k@public.gmane.org>, Alan Stern <stern-nwvwT67g6+6dFdvTe/nMLpVzexx5G7lz@public.gmane.org>,
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To: Pavel Machek <pavel-+ZI9xUNit7I@public.gmane.org>
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On 26.9.2013 14:06, Pavel Machek wrote:
> Actually...
> 
> Is not it as simple as storing hash of hibernation image into NVRAM
> and then verifying the hash matches the value in NVRAM on next
> startup? No encryption needed. 

I think that part of the exercise is to minimize the number of writes to
the NVRAM. The hash changes with every hibernation, obviously.

Michal