Re: Randomness sources for the IETF 2021-2022 Nomcom Selection

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Some more math:

Once sources 2-4 fire they are just known constants in the selection algorithm and can be discounted for randomness purposes  from the time they fire until the selection process occurs.   The last item (source 1) which is the only one still unfired by midnight 5 July, works out to a maximum of 46.7 bits of entropy  (e.g. Log2(50^5 * 12^2)).    The possible set of results is 112.5 trillion different random value results vs 89.2 trillion selection results (not considering passovers for 3rd organizational  and assuming 10 selections without replacement from a pool of 117) - small enough perhaps that if you ran a lot of simulations, you might find some interesting statistical possibilities on the final composition of the panel if you removed one or two carefully chosen people from the pool at the last moment.

RFC 3797 suggested a need for no more than 47 bits for a pool size of 120, but that document was written near the beginning of the modern GPU era and the explosion of computing power from that.     My guess is that 47 bits of entropy for a pool of 120 is way too small for safety and it may be useful to readdress this in a later document.

Mike



On 6/30/2021 4:35 PM, Michael StJohns wrote:
Hi Gabe -

I need to throw a spanner into the works and suggest you can't do it the way you propose.

First, you may want to give yourself a few days between close of challenges and doing the pull.  If there are challenges and they need to be resolved, you need to be able to reschedule *before* ANY of the random sources are resolved without looking like you're putting your thumb on the scale.  If you've already resolved the randomness, it's possible to game things a slight bit by announcing changes of affiliation or withdrawals.

AIRC last year had some issues with respect to affiliation and disqualification that were worrisome.

So instead do in order:  1) Close the challenge period 2) resolve any challenges, 3) THEN announce the *future* randomness sources - in that order.

Second, all but source 1 is sampled PRIOR to the final finalization of the list and that's just wrong.

Mike


On 6/30/2021 3:42 PM, NomCom Chair 2021 wrote:
Per RFC 8713 and using RFC 3797 "Publicly Verifiable Nominations Committee (NomCom) Random Selection", the following are the seeds that will be used on Tuesday, July 6, 2021.

Notice that Random Source 1 is drawn after the end of the current challenge period:

     Monday, July 5, 2021 at 23:59 UTC: Deadline for raising issues on the qualified volunteers list

** Random Source 1 - EuroMillions Lottery **
** Date - Tuesday, July 6, 2021 **
EuroMillions Lottery Results
https://www.euro-millions.com/results
Tuesday, July 6, 2021 Results:
https://www.euro-millions.com/results/06-07-2021
   (7 numbers, in ascending order, including the "Lucky Stars": 5 "Main Numbers" between
   1 and 50 and 2 "Lucky Stars" between 1 and 12)

** Random Source 2 - US Power Ball **
** Date - Saturday July 3, 2021 **
Powerball Lottery Results
https://www.powerball.com/
Saturday July 3, 2021 results:
   (5 numbers, in ascending order, between 1 and 69 plus 1 number between 1 and 26)

** Random Source 3 - Australian TattsLotto **
** Date - Saturday July 3, 2021 **
TattsLotto Results
https://thelott.com/tattslotto/results
Saturday July 3, 2021 results:
(6 winning numbers, in "numerical"/ascending order, between 1 and 45; no Supps numbers)

** Random Source 4 - Japan Lotto 7 **
** Date - Friday July 2, 2021 **
https://en.lottolyzer.com/result/japan/lotto-7
Friday July 2, 2021 results:
(7 "winning numbers", in ascending order, between 1 and 37)


Gabriel Montenegro
NomCom Chair 2021-2022
nomcom-chair-2021 at ietf dot org

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