Re: [Cfrg] On the (non-)randomness of the S-box of Streebog and Kuznyechik

Stephen Farrell <stephen.farrell@cs.tcd.ie> Tue, 06 August 2019 14:23 UTC

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To: Dmitry Belyavsky <beldmit@gmail.com>
Cc: "Stanislav V. Smyshlyaev" <smyshsv@gmail.com>, Leo Perrin <leo.perrin@inria.fr>, cfrg <cfrg@irtf.org>
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From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Date: Tue, 6 Aug 2019 15:23:31 +0100
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Subject: Re: [Cfrg] On the (non-)randomness of the S-box of Streebog and Kuznyechik
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Sorry, I must be confusing something...

On 06/08/2019 15:20, Dmitry Belyavsky wrote:
> In fact, the reference to 5933 is normative (in part of  DNSSec).

I'm looking at 8624 now and the reference
to 6986 is in section 7.1 "normative references" [1]
whereas the reference to 5933 is in 7.2 which
are the informative references. [2]

An errata that just said to swap those would make
sense and seems to match what you say below.

Cheers,
S.

[1] https://tools.ietf.org/html/rfc8624#section-7.1
[2] https://tools.ietf.org/html/rfc8624#section-7.2

> 
> Then we have reference to the superseding algorithms which personally I
> tend to treat as informative.
> It explains why the GOST algorithms have the status MUST NOT for
> signing/delegation.