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 Dear JH 
SONG, 
  
Could you please 
explain the rationale behind encrypting MAC messages, and specifically which MAC 
messages will be encrypted and what delay you expect such encryption to 
introduce. 
  
Thanks, 
Yigal 
   
  Jeff, 
    
  Here is my minimum requirements for PKMv2. 
    
    
  0. Reuse PKM structure as much as we can 
    
  1. Extended 256 bits Key Hierarchy for enhanced key derivation  
      1.1 Shall provide enough key materials to support MAC 
  message protection key and Group Key generations, and future 
expansion 
      1.2 Shall be able to support EAP inner method Key 
  derivation function if AAA key was generated by inner method 
    
  2. Define top level Security Association that manages security info of MAC 
  messages in either awake and idles state 
    
  3. Mutual authentication is EAP method specific requirement and may 
  not be captured in 802.16e, unless we want to extend existing PKI based 
  authentication 
    
  4. Secure MAC management messages support (Note: Here MAC Managements 
  messages including PKM EAP encapsulation messages) 
     4.1 Crpyto Synchronized Integrity check support against 
  Replay Attack 
     4.2 Confidentiality support for Identity and session 
  info protection 
    
  5. fix and complete EAP encapsulation message defined in current baseline 
  to encapsulate EAP messages as defined in RFC 2284bis ID. 
    
  6. Hardware Friendly AES Authentication mode, Authenticated encryption 
  mode, and Encryption mode support 
    
  7. Pre-authentication/Fast Reauthentication support based on below 
  criteria 
      7.1 Shall minimize HO reconnection time 
      7.2 Shall not degrade Security defined in SA 
    
  8. Shall be able to support MBS and other multimedia service 
      8.1 Shall support Macro diversity in neighborhood 
  cells  
      8.2 Shall be able to support 
  crypto binding between PKM based link layer 
  Encrpytion Key and MBS and other application service encryption 
  key from third party service provider 
    
  9. May support optional flexable Encrpytion location 
    
  Thanks, 
  JH SONG 
   
   HanaFOS.com 
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