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Date: Tue, 5 Jun 2018 13:02:08 -0400
From: "Theodore Y. Ts'o" <tytso@mit.edu>
Subject: Re: [GIT PULL] fscrypt updates for 4.18
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To: Richard Weinberger <richard@sigma-star.at>
Cc: Richard Weinberger <richard.weinberger@gmail.com>, Linus Torvalds <torvalds@linux-foundation.org>, LKML <linux-kernel@vger.kernel.org>, linux-fscrypt@vger.kernel.org
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On Tue, Jun 05, 2018 at 06:10:24PM +0200, Richard Weinberger wrote:
> That's the question. I understand the use case, but I fear attack scenarios
> where someone manages to downgrade the crypto of my phone.
> This is why I was asking whether Android tells me whether Speck is used or not.
> "it does encryption" is clearly not enough.

An attack scenario where someone manages to downgrade the crypto of
your phone would require replacing your kernel and your /system
partition --- at which point, you've got other problems.  :-)

	      	       	      	     	 - Ted