[Cfrg] Ristretto VRF? (was: I-D Action: draft-irtf-cfrg-vrf-04.txt)

Tony Arcieri <bascule@gmail.com> Fri, 08 February 2019 23:08 UTC

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From: Tony Arcieri <bascule@gmail.com>
Date: Fri, 8 Feb 2019 15:08:28 -0800
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Subject: [Cfrg] Ristretto VRF? (was: I-D Action: draft-irtf-cfrg-vrf-04.txt)
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I'm curious... with a Ristretto draft now available[1], would it be worth
considering the inclusion of a Ristretto VRF in draft-irtf-cfrg-vrf?

>From a "running code" perspective, implementing the ECVRF described in this
draft in terms of Ristretto is something that is already happening[2][3].

[1]: https://tools.ietf.org/html/draft-hdevalence-cfrg-ristretto-00
[2]:
https://github.com/CleverCloud/biscuit/blob/master/DESIGN.md#elliptic-curve-verifiable-random-functions
[3]: https://github.com/CleverCloud/biscuit/pull/10

On Fri, Feb 8, 2019 at 2:32 PM <internet-drafts@ietf.org> wrote:

>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> This draft is a work item of the Crypto Forum RG of the IRTF.
>
>         Title           : Verifiable Random Functions (VRFs)
>         Authors         : Sharon Goldberg
>                           Leonid Reyzin
>                           Dimitrios Papadopoulos
>                           Jan Vcelak
>         Filename        : draft-irtf-cfrg-vrf-04.txt
>         Pages           : 42
>         Date            : 2019-02-08
>
> Abstract:
>    A Verifiable Random Function (VRF) is the public-key version of a
>    keyed cryptographic hash.  Only the holder of the private key can
>    compute the hash, but anyone with public key can verify the
>    correctness of the hash.  VRFs are useful for preventing enumeration
>    of hash-based data structures.  This document specifies several VRF
>    constructions that are secure in the cryptographic random oracle
>    model.  One VRF uses RSA and the other VRF uses Eliptic Curves (EC).
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-irtf-cfrg-vrf/
>
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-irtf-cfrg-vrf-04
> https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-vrf-04
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-irtf-cfrg-vrf-04
>
>
> Please note that it may take a couple of minutes from the time of
> submission
> until the htmlized version and diff are available at tools.ietf.org.
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
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-- 
Tony Arcieri