[Cfrg] FW: Request for review of ChaCha/Poly1305

Gordon Procter <gtprocter@gmail.com> Tue, 29 July 2014 10:05 UTC

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From: Gordon Procter <gtprocter@gmail.com>
Date: Tue, 29 Jul 2014 11:05:33 +0100
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Subject: [Cfrg] FW: Request for review of ChaCha/Poly1305
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On 25/07/2014 12:04, "Paterson, Kenny" <Kenny.Paterson@rhul.ac.uk> wrote:

>Dear CFRG,
>
>We have been formally requested by the TLS WG to provide review on this
>document:
>
>https://datatracker.ietf.org/doc/draft-irtf-cfrg-chacha20-poly1305/
>
>defining an AEAD construction using the ChaCha and Poly1305 algorithms.
>This scheme is being considered by the TLS WG for adoption in TLS.
>
>There are two aspects to the request:
>
>A) analysis of the individual algorithms;
>B) analysis of the composition (in Section 2.8 of the document).
>
>My sense is that novel analysis of the algorithms (A) is not likely to be
>forthcoming from this group within a realistic timeframe. We can instead
>hope that the adoption of ChaCha in TLS will spur further analysis of it
>by the research community in the longer term.
>
>On the other hand, analysis of the composition (B) should be within our
>collective reach within a realistic timeframe.
>
>Comments, please.
>
>Best wishes
>
>Kenny (for the chairs)
>

Hi Kenny,

I can spend some time looking at this (specifically the composition).


Gordon