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Hi Peter,
“circles” are not an accurate characterization. While SIV was discussed in the past there
was no technical opposition when it was proposed that FILS return to SIV. We’re revisiting
a discussion that was not resolved on technical reasons.
There is a lot of text that deals with how to construct, maintain, and process counters. It
is the subject of quite a few CIDs (and they’re not all mine!). This submission addresses
these technical complaints by simplifying the text, thereby simplifying implementations,
and enhancing the overall security of FILS. I’m not really sure what the downside is to SIV.
There are legitimate technical reasons to not use GCM and CCM as AEAD handshaking
schemes. These legitimate technical reasons are addressed by SIV. And there is no
technical reason to oppose SIV.
Keep in mind that originally SIV was the FILS AEAD scheme. We haven’t selected GCM
(or CCM) each time. So it’s not really going in “circles” it’s returning to normalcy.
regards,
Dan.
Dan,
Are we doing this again? How many times do we have go around in circles with SIV? Sure, IEEE 802.11 procedures allow the nearly
endless relitigation of decided points, but do we really have to? We’ve been here and ended up selecting AES-GCM (or CCM previously) each time.
Kind regards,
-Peter
I’ve uploaded document 11-15/1243r0 to address comments related to the AEAD mode
used in FILS. Please take a look. A special shout out to:
- Mark Rison: I am proposing to address your CIDs 10705, 10706, and 10727 with this.
- Paul Lamber: I am proposing to address your CIDs 10759 and 10760 with this.
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