Wireless Encryption Standards

Question 1

WEP

Answer 1

• 64-bit or 128-bit key size
• Cryptographic vulnerabilties found in 2001
• WEP can no longer be used

Question 2

WPA

Answer 2

• Short-term workaround after WEP
• Used RC4 cipher as a TKIP (Temporal Key Integrity Protocol)
• TKIP has its own vulnerabilities

Question 3

WPA2

Answer 3

• Replaced TKIP with CCMP (Counter Mode with Cipher Block
Chaining Message Authentication Code Protocol)
• Replaced RC4 with AES (Advanced Encryption Standard)
• WPA2 is the latest and most secure wireless encryption method