A Wireless LAN Security Protocol

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A Wireless LAN Security Protocol

• CTP/CURTIN/2011/GROUP 29

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Group Members

• DCN09C4-0808 D.M.N.Dissanayake

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Why WLAN Security?

• Intruders who try to attack the computers
• Rogue AP
• Soft AP MAC spoofing
• Denial of Service
• The communication between server and client of a
  WLAN can be hacked by an intruder.

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Security Requirments

• Confidentiality
• -Messages sent must be encrypted
• Authentication
• -Origin of message received must be verified
• Integrity
• -Integrity of messages received must be verified
• Access Control
• -Access for legitimate entities only

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Available Protocols

• WPE (Wired Equivalent Privacy)
• WPA (Wi-Fi Protected Access)
• WPA2
• TKIP (Temporal Key Integrity Protocol)

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New Protocol

• Client generate a session key.
• User Inputs a key
• Hashes are generated for both the keys.
• The user-input key is encrypted with the time key
  and the time key is encrypted with a hard-coded
  key.

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New Protocol cont

• Client sends the hashes and encrypted passwords
  to server through an access point
• Server decrypts keys
• Server generates hashes for the decrypted keys
  and compares them with the hashes
• If all is good, further communication is done
  using same user key.

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New Protocol cont

• If there is a failure, the session is terminated.
• The client sends exit command, and the session
  is terminated.

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Block Diagram
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Time Plan
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Advantages of this protocol

• User may be able use a very interact with other
  computers more securely.

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Thank You