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Re: [AVTCORE] Summary of discussion with IESG and call for consensus regarding AES-GCM draft

"Mo Zanaty (mzanaty)" <mzanaty@cisco.com> Thu, 05 March 2015 04:01 UTC

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From: "Mo Zanaty (mzanaty)" <mzanaty@cisco.com>
To: Magnus Westerlund <magnus.westerlund@ericsson.com>, IETF AVTCore WG <avt@ietf.org>
Thread-Topic: [AVTCORE] Summary of discussion with IESG and call for consensus regarding AES-GCM draft
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Date: Thu, 05 Mar 2015 04:01:33 +0000
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Cc: "draft-ietf-avtcore-srtp-aes-gcm@tools.ietf.org" <draft-ietf-avtcore-srtp-aes-gcm@tools.ietf.org>
Subject: Re: [AVTCORE] Summary of discussion with IESG and call for consensus regarding AES-GCM draft
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I¹m fine with these proposals. CCM may eventually be needed for some
constrained applications, but there is really no reason to bury it in the
GCM draft, it should live on its own merits in a separate draft if needed.
The GCM options look sufficient.

Mo

On 3/2/15, 6:53 AM, Magnus Westerlund <magnus.westerlund@ericsson.com>
wrote:

WG,

Last Thursday Kevin Igoe and I participated in a phone conference with
IESG to discuss the way forward with draft-ietf-avtcore-srtp-aes-gcm.

After some discussion the conclusion was the following:

1. Proposal to remove AES-CCM modes from the draft, if clear need arise
a AES-CCM only separate draft can be created. But, that will not be done
without clear motivation for why CCM is needed. So if you think CCM is
required, please step up and comment on this.

2. The AES-GCM draft is proposed to contain the following configurations:

       AEAD_AES_128_GCM     (with 16 byte authentication tag)
       AEAD_AES_128_GCM_64  (with 8 byte authentication tag)
       AEAD_AES_256_GCM     (with 16 byte authentication tag)


If any one in the WG has issues with either of these proposals, please
comment on this no later than 16th of March.

Cheers

Magnus Westerlund

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