Wifi Encryption Flashcards
1
Q
WEP (40 or 104 bits)
A
RC4 (128 or 256 bits to secure data and CRC-32 for the checksum)
64 bit WEP uses 40 bit key size plus 24 bit IV
128 bit WEP uses 104 bit key size with 24 bit IV
2
Q
WPA
A
PSK and TKIP (tkip (based on RC4 stream cipher) has a sequence counter to combat replay attacks. TKIP employs per package 128 but key)
Also, hashes the IV and pre shared key) (superseded by AES)
256 bit with MIC
Personal vs enterprise:
WPA enterprise supports 802.1x radius authentication.
3
Q
WPA2
A
Introduces CCMP
(Counter mode with CBC Message Authentication Code Protocol)
Stronger than TKIP
256bit AES
Personal mode: PSK
Enterprise: EAP (extensible authentication protocol (radius server))
