1.4

Question 1

What is WPA?

Answer 1

Wi-Fi Protected Access

• Created in 2002 to replace WEP, which had a serious cryptographic weakness.
• Every packet gets a unique 128-bit encryption key
• Uses RC4 with TKIP.

Question 2

What is WEP?

Answer 2

Wired Equivalent Privacy

An old method for wireless encryption

Unsafe to use due to vulnerabilities and cryptographic weaknesses.

Question 3

What is TKIP?

Answer 3

Temporal Key Integrity Protocol

• Changes encryption key information constantly.
• Uses a sequence counter to protect against replay attacks.

• Uses as 64-bit Message Integrity Check to protect
against tampering.

• No longer used due to vulnerabilities; deprecated in the 802.11 standard in 2012.

Question 4

What is an IV?

Answer 4

Initialization Vector

Question 5

What is WPA2?

Answer 5

Replacement for WPA, beginning in 2004.

• Uses AES instead of RC4
• Uses CCMP instead of TKIP

Question 6

What is AES?

Answer 6

Advanced Encryption Standard

Question 7

What is CCMP?

Answer 7

Counter Mode with Cipher Block Chaining Message Authentication Code Protocol

• Uses AES for data confidentiality
• Uses a 128-bit key and a 128-bit block size
• Requires additional computer resources
• Superior encryption than TKIP

Question 8

What is EAP-FAST?

Answer 8

EAP Flexible Authentication via Secure Tunneling.

Question 9

What is PEAP?

Answer 9

Protected Extensible Authentication Protocol

• Encapsulates EAP in a TLS tunnel

Question 10

What are common types of Wireless Encryption (including historical)?

Answer 10

WEP

WPA

WPA2