802.11i
  • WEP(Wireless Equivalency Protocol)
WiFi_Probe_Authentication_Assocation.jpg
  • WPA
  • 802.11i/WPA2
EAP.gifEAP_2.jpg
  • 802.1X
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  • Pairwise mater key(PMK)
  • Pairwise transient key(PTK)
    • Data Encryption key (128 bits)
    • Data Integrity key (128 bits)
    • EAPOL-Key Encryption (128 bits)
    • EAPOL-Key Integrity key (128 bits)
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  • Group keys
    • The access point chooses a 256-bit cryptographic-quality random number. That number becomes the GMK or group master key.
    • The GMK is used to create the Group Encryption Key (128 bits) and the Group Integrity Key (128 bits.)
    • The keys are combined to create GTK or group transient key.
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