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Re: [AVTCORE] Fwd: I-D Action: draft-lennox-avtcore-dtls-srtp-bigaes-00.txt

Martin Thomson <martin.thomson@gmail.com> Tue, 28 March 2017 10:50 UTC

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From: Martin Thomson <martin.thomson@gmail.com>
Date: Tue, 28 Mar 2017 05:50:51 -0500
Message-ID: <CABkgnnXKj4zDQmjUQJNLiMiNy_r52=CtmCB77wBSqW1e7qyuXw@mail.gmail.com>
To: Jonathan Lennox <jonathan@vidyo.com>
Cc: IETF AVTCore WG <avt@ietf.org>
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Subject: Re: [AVTCORE] Fwd: I-D Action: draft-lennox-avtcore-dtls-srtp-bigaes-00.txt
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This looks pretty good.  You should probably include a nod toward the
recent SHA-1 collisions, and note the use of HMAC, which is still
apparently unaffected by this.

On 27 March 2017 at 18:08, Jonathan Lennox <jonathan@vidyo.com> wrote:
> For some reason, codepoints for the SRTPProtectionProfiles
> SRTP_AES256_CM_HMAC_SHA1_80 and SRTP_AES256_CM_HMAC_SHA1_32 were never
> assigned for DTLS/SRTP.
>
> After some discussion yesterday, people generally seemed pretty sure it was
> an oversight — these registrations got taken out of draft-ietf-avt-dtls-srtp
> because draft-ietf-avt-srtp-big-aes wasn’t ready yet, but they never then
> got put into draft-ietf-avt-srtp-big-aes.
>
> Thus, I put together a short draft doing the registration.  The meat of it
> is copy and pasted from draft-ietf-avt-dtls-srtp-03, the final version
> before these registrations got taken out.
>
> Comments are welcome.  It’s a very short document, and if people could at
> least look it over before tomorrow’s AVTCORE meeting (and I apologize for
> the very short notice) I’d appreciate it.
>
> Begin forwarded message:
>
> From: <internet-drafts@ietf.org>
> Subject: I-D Action: draft-lennox-avtcore-dtls-srtp-bigaes-00.txt
> Date: March 27, 2017 at 6:07:15 PM CDT
> To: <i-d-announce@ietf.org>
> Resent-From: Jonathan Lennox <lennox@cs.columbia.edu>
> Resent-To: <jonathan@vidyo.com>
> Reply-To: <internet-drafts@ietf.org>
>
>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>
>
>        Title           : DTLS/SRTP Protection Profiles for 256-bit AES-CTR
> Encryption
>        Author          : Jonathan Lennox
> Filename        : draft-lennox-avtcore-dtls-srtp-bigaes-00.txt
> Pages           : 5
> Date            : 2017-03-27
>
> Abstract:
>   This memo defines Datagram Transport Layer Security (DTLS) Secure
>   Real-time Transport Protocol (SRTP) Protection Profiles for 256-bit
>   Advanced Encryption Standard (AES) Counter Mode.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-lennox-avtcore-dtls-srtp-bigaes/
>
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-lennox-avtcore-dtls-srtp-bigaes-00
> https://datatracker.ietf.org/doc/html/draft-lennox-avtcore-dtls-srtp-bigaes-00
>
>
> 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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