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Re: [Cfrg] RFC 5742 conflict review for draft-dolmatov-kuznyechik

Watson Ladd <watsonbladd@gmail.com> Tue, 02 February 2016 18:24 UTC

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References: <4A631584-C0F1-4AFC-A51D-155C34415413@isode.com> <D2D64C5B.61B8F%kenny.paterson@rhul.ac.uk> <CADqLbz+b-YQ10d6d5_GHN+r7ETWobQgq+skPyXQSdUGG1dBDqQ@mail.gmail.com>
Date: Tue, 02 Feb 2016 10:24:03 -0800
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From: Watson Ladd <watsonbladd@gmail.com>
To: Dmitry Belyavsky <beldmit@gmail.com>
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Cc: cfrg@irtf.org, ISE <rfc-ise@rfc-editor.org>
Subject: Re: [Cfrg] RFC 5742 conflict review for draft-dolmatov-kuznyechik
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On Feb 2, 2016 3:20 AM, "Dmitry Belyavsky" <beldmit@gmail.com> wrote:
>
> Dear Kenny,
>
> On Tue, Feb 2, 2016 at 2:16 PM, Paterson, Kenny <Kenny.Paterson@rhul.ac.uk>
wrote:
>>
>> Hi,
>>
>> Not strictly relevant for this conflict review, but since we're
discussing
>> it anyway...
>>
>> Is anyone on the CFRG list aware of any cryptanalysis of the block cipher
>> Kuznyechik?
>>
>> I realise it's a relatively new algorithm, although it seems to be a
>> development of previous ciphers from the same stable, but my search
engine
>> of choice only turned up a couple of references.
>>
>> So what's the state-of-the-art here?
>
>
> The only reference I know is here:
> http://cvo-lab.blogspot.fr/2015/01/the-new-gost-standard-from-russian.html
>
> But I hope that there are some more researches.

Why is there no design document comparable to that for Rijndael? Of course
it's possible to write such a document by computing all differentials, the
minimum distance of the linear layer, etc, but it seems strange that this
doesn't exist.

>
> --
> SY, Dmitry Belyavsky
>
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