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Re: [saag] [CFRG] NIST Leightweight Crypto report

Thomas Peyrin <thomas.peyrin@gmail.com> Tue, 27 July 2021 21:01 UTC

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From: Thomas Peyrin <thomas.peyrin@gmail.com>
Date: Tue, 27 Jul 2021 23:01:02 +0200
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To: "Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu>
Cc: Robert Moskowitz <rgm-sec@htt-consult.com>, "cfrg@irtf.org" <cfrg@irtf.org>, "saag@ietf.org" <saag@ietf.org>
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Subject: Re: [saag] [CFRG] NIST Leightweight Crypto report
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Dear Uri,

(full disclosure: I am one of the designers of Romulus)

Among the finalists, I believe only Romulus has a version (Romulus-M) that
is nonce-misuse resistant, similarly to SIV. Note also that Romulus now
includes hashing feature as well (Romulus-H).

Regards,

Thomas.


Le mar. 27 juil. 2021 à 17:22, Blumenthal, Uri - 0553 - MITLL <
uri@ll.mit.edu> a écrit :

> I have no comment, but one question: which of the NIST Lightweight Crypto
> candidates provide nonce misuse resistance, at least at the level
> comparable with SIV mode?
>
> --
> Regards,
> Uri
>
> There are two ways to design a system. One is to make is so simple there
> are obviously no deficiencies.
> The other is to make it so complex there are no obvious deficiencies.
>
>                                                            -  C. A. R. Hoare
>
>
> On 7/27/21, 11:06, "CFRG on behalf of Robert Moskowitz" <
> cfrg-bounces@irtf.org on behalf of rgm-sec@htt-consult.com> wrote:
>
>     NIST just came out with:  NISTIR 8369
>
>
>     "Status Report on the Second Round of the NIST Lightweight
> Cryptography
>     Standardization Process"
>
>     https://csrc.nist.gov/publications/detail/nistir/8369/final
>
>     I have been working with Xoodyak which is one of the 4 AEAD/hashing
>     finalists.  You can see how I am using it in:
>
>     https://datatracker.ietf.org/doc/draft-moskowitz-hip-new-crypto/
>
>     I "like" Xoodyak, as I am able to use it much like Keccak/SHA3/SHAKE.
>     It does not come with the nice standardized calls as in SP800-185, but
> I
>     think I have duplicated SHAKE/cSHAKE/KMAC with Xoodyak in my draft.
>     Comments welcome!
>
>     It has been implemented in openHIP.
>
>     Bob
>
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