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Date: Wed, 20 Sep 2017 16:09:46 +0200
From: "Jason A. Donenfeld" <Jason@...c4.com>
To: Stephan Mueller <smueller@...onox.de>
Cc: linux-security-module@...r.kernel.org, keyrings@...r.kernel.org, 
	kernel-hardening@...ts.openwall.com, LKML <linux-kernel@...r.kernel.org>, 
	David Howells <dhowells@...hat.com>, Eric Biggers <ebiggers3@...il.com>, 
	Herbert Xu <herbert@...dor.apana.org.au>, Kirill Marinushkin <k.marinushkin@...il.com>, 
	security@...nel.org, stable@...r.kernel.org
Subject: Re: [PATCH v6] security/keys: rewrite all of big_key crypto

On Wed, Sep 20, 2017 at 4:06 PM, Stephan Mueller <smueller@...onox.de> wrote:
>> Section 3 shows an attack with repeated nonces, which we don't do here.
>
> Maybe I miss a point here, but zero IVs is no repetition of nonces?

If there's a fresh key each time, then no, it's not a repetition.

This patch uses a fresh random key for every encryption.

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