1. Frame Protection for 11az
Date:
Authors:
Name
Affiliations
Address
Phone
Nehru Bhandaru
Broadcom Ltd.
190 Mathilda Place, Sunnyvale CA 94086 1

2. Introduction 17/1737r0 TGaz SFD 11-17/0462r9
The REVmc, HEz, and VHTz FTM modes, the fields over which range measurements are performed shall be protected against a VHT/HE Type B adversary attack
17/1737r0
Pre-association security negotiation
Touches upon frame protection based on keys derived from negotiation
Negotiation frames, Measurement Frames, Triggers, LMR (Feedback)
Need some high level agreement on frame protection 2

3. Strawpoll We agree that
Security keys for 11az Management Frame Protection and LTF protection are derived based on security negotiation and never shared OTA (associated mode or pre-association security negotiation).
LTF sequence is generated from some shared information and the derived LTF protection keys.
Keys used for data exchange and 11az management protection may be different from keys used for LTF sequence protection
PMF framework is used for FTM management frames, the key may either derived from associated or pre-associated security negotiation. 3

4. Motion Passed from Wed Nov 8 ‘17 PM2
Move to adopt the following text in the TGaz SFD under Section 6 – Security - and grant the SFD editor editorial license:
“Security keys for 11az Management Frame Protection and range measurement field protection are derived based on security negotiation and never shared OTA (associated mode or pre-association security negotiation).
Range measurement field sequence is generated from some shared information and derived from the range measurement field protection key(s).
Keys used for data exchange and 11az management protection may be different from keys used for range measurement field protection.
PMF framework is used for FTM Req, FTM and LMR management frames; the key may either be derived from associated or pre- associated security negotiation.”
Move: Nehru Bhandaru
Second: Chitto Ghosh
Results (Y/N/A): 9/0/0
Motion passes. 4

5. Motion
Move to adopt the following text in the TGaz SFD under Section 6 – Security - and grant the SFD editor editorial license:
“Security keys for 11az Management Frame Protection and range measurement field protection are derived based on security negotiation and never shared OTA (associated mode or pre-association security negotiation).
Note: The measurement field here refers to the HE LTF or VHT LTF in HEz or VHTz PPDUs.  
Range measurement field sequence is generated from some shared information and derived from the range measurement field protection key(s).
Keys used for data exchange and 11az management protection may be different from keys used for range measurement field protection.
PMF framework is used for FTM Req, FTM and LMR management frames; the key may either be derived from associated or pre- associated security negotiation.”
Move:
Second:
Results (Y/N/A): 5