CWSP, 2nd Edition

Chapter 5 802.11 Layer 2 Dynamic Encryption Key Generation

IN THIS CHAPTER, YOU WILL LEARN ABOUT THE FOLLOWING:

✓ Advantages of dynamic encryption

• Dynamic WEP

• Robust security network (RSN)

• RSN information element

• Authentication and key management (AKM)

• RSNA key hierarchy

• 4-Way Handshake

• Group Handshake

• PeerKey Handshake

• TDLS Peer Key Handshake

• Passphrase-to-PSK mapping

• Roaming and dynamic keys

The 802.11-2012 standard defines two classes of security methods using pre-RSNA and RSNA algorithms. Pre-RSNA methods use static WEP encryption and the legacy authentication methods that were discussed in Chapter 2, “Legacy 802.11 Security.” RSNA security methods use either TKIP/ARC4 or CCMP/AES encryption, dynamic key management procedures, and the PSK ...