linux-kernel - Re: [PATCH 2/3] crypto: add output feedback mode

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Date:   Fri, 5 Oct 2018 08:45:35 +0200
From:   Ard Biesheuvel <ard.biesheuvel@...aro.org>
To:     Herbert Xu <herbert@...dor.apana.org.au>
Cc:     Gilad Ben-Yossef <gilad@...yossef.com>,
        "David S. Miller" <davem@...emloft.net>, ofir.drang@....com,
        "open list:HARDWARE RANDOM NUMBER GENERATOR CORE" 
        <linux-crypto@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] crypto: add output feedback mode

On 5 October 2018 at 04:31, Herbert Xu <herbert@...dor.apana.org.au> wrote:
> On Fri, Sep 28, 2018 at 12:06:29PM +0200, Ard Biesheuvel wrote:
>> On 20 September 2018 at 15:18, Gilad Ben-Yossef <gilad@...yossef.com> wrote:
>> > Add a generic version of output feedback mode. We already have support of
>> > several hardware based transformations of this mode and the needed test
>> > vectors but we somehow missed adding a generic software one. Fix this now.
>> >
>> > Signed-off-by: Gilad Ben-Yossef <gilad@...yossef.com>
>>
>> I couldn't find any users of OFB in the kernel. Any idea who is using
>> it and for what?
>
> Yes this shouldn't have been accepted however the driver did go
> in with OFB and it's been there for a while so that's why I'm
> making this exception.
>

Fair enough