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Hi Yongho, Yes, I am aware that we have defined GTK, IGTK, BIGTK KDEs in D0.3, however these are not subelements. If we go the subelement route, anyway we also need to define new subelements for each procedure (WNM, Fast BSS Transition, FILS etc.)
in order to signal the Link Ids of the APs, so it is not really straightforward reusing of existing subelements as well. While I agree with you that we should have a single consistent method, I think that using ML element is the better option. Instead of limiting to WNM case, we could expand the usage of Abhi’s new variant of ML element so that it can cater
for all Key distributions scenarios, may be rename it “Key Distribution variant ML element“? Perhaps we can even revisit whether the new KDEs in D0.3 can be changed to use this ML element so that we have one unified way to distribute the keys. This approach
is also similar to the inclusion of the Multi-band element in the 4-way handshake messages. Implementation wise this will also make the parsing simpler since a single ML element variant need to be parsed instead of different subelements. What do you think? Regards, Rojan From: Yongho Seok <yongho.seok@xxxxxxxxx> Hi Rojan, KDE format also needs to carry GTK, IGTK, and BIGTK of other APs. On that purpose, in D0.3, we already defined the MLO GTK, MLO IGTK, and MLO BIGTK subelements, instead of creating a new variant of the ML element. This way is the same approach done in the Multi-band GTK KDE. In addition to the WNM Sleep Mode Response, Fast BSS Transition IE needs to carry GTK, IGTK, and BIGTK of other APs. My preference is that all three just use a single consistent way. In that sense, it is straightforward to follow the same
way done in KDE. Otherwise, too many variants of the ML element are needed for this simple usage scenarios. You know, FILS has not been discussed yet, if it is supported in MLO, Key Delivery element is also need to be updated... Regards, Yongho 2021년 1월 25일 (월)
오후 6:16, Rojan Chitrakar <rojan.chitrakar@xxxxxxxxxxxxxxxx>님이
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