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

From: Ard Biesheuvel
Date: Fri Oct 05 2018 - 02:45:43 EST


On 5 October 2018 at 04:31, Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxx> 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@xxxxxxxxxxxxx>
>>
>> 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