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Re: [TLS] Document on increasing the lifetime of session keys

Eric Rescorla <ekr@rtfm.com> Sun, 28 August 2016 13:52 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Sun, 28 Aug 2016 06:51:52 -0700
Message-ID: <CABcZeBOh=3zqYv=U+Yd1vF-niwpziPA-rawSRdTLqyTOSeDC+Q@mail.gmail.com>
To: "Stanislav V. Smyshlyaev" <smyshsv@gmail.com>
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Cc: Mihir Bellare <mihir@eng.ucsd.edu>, "cfrg@irtf.org" <cfrg@irtf.org>, "<tls@ietf.org>" <tls@ietf.org>, Paul Lambert <paul@marvell.com>
Subject: Re: [TLS] Document on increasing the lifetime of session keys
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Stanislav,

TLS 1.3 incorporates a rekeying mechanism (KeyUpdate) similar to that if
Abdalla and Bellare 1(b).

-Ekr


On Sun, Aug 28, 2016 at 3:48 AM, Stanislav V. Smyshlyaev <smyshsv@gmail.com>
wrote:

> Dear colleagues,
>
> Since there is a considerable interest to the question of increasing
> session keys lifetime (several productive off-the-list personal discussions
> about CryptoPro key meshing algorithms and http://eprint.iacr.org/2016/628 started
> after the Friday posting), maybe we should think about getting started a
> work on a document on efficient re-keying (about techniques without secret
> state and/or techniques with it (like in M. Abdalla and M. Bellare work,
> https://cseweb.ucsd.edu/~mihir/papers/rekey.html)) mechanisms for common
> cipher modes (CTR, CCM, GCM, CBC, CFB) in CFRG?
>
> If you consider it reasonable, we can prepare a first version of such a
> draft based on our results (both included in that our preprint and new ones
> which we are working on currently) before IETF 97 to be able to have a
> discussion on this issue there in Seoul.
> Kindest regards,
> Stanislav Smyshlyaev
>
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