Which encryption algorithm does WPA use?
A. RC4
B. DES
C. AES
D. DH5
Correct Answer: A
Explanation/Reference:
Explanation:
The RC4 Encryption Algorithm, developed by Ronald Rivest of RSA, is a shared key stream cipher algorithm requiring a secure exchange of a shared key. The symmetric key algorithm is used identically for encryption and decryption such that the data stream is simply XORed with the generated key sequence. The algorithm is serial as it requires successive exchanges of state entries based on the key sequence. Hence implementations can be very computationally intensive. The RC4 encryption algorithm is used by standards such as IEEE 802.11 within WEP (Wireless Encryption Protocol) using 40 and 128-bit keys. Published procedures exist for cracking the security measures as implemented in WEP.
http://www.vocal.com/cryptography/rc4-encryption-algoritm/
Explanation/Reference:
Explanation:
The RC4 Encryption Algorithm, developed by Ronald Rivest of RSA, is a shared key stream cipher algorithm requiring a secure exchange of a shared key. The symmetric key algorithm is used identically for encryption and decryption such that the data stream is simply XORed with the generated key sequence. The algorithm is serial as it requires successive exchanges of state entries based on the key sequence. Hence implementations can be very computationally intensive. The RC4 encryption algorithm is used by standards such as IEEE 802.11 within WEP (Wireless Encryption Protocol) using 40 and 128-bit keys. Published procedures exist for cracking the security measures as implemented in WEP.
http://www.vocal.com/cryptography/rc4-encryption-algoritm/
TKIP is based on RC4. TKIP support is mandatory for WPA, and AES is optional. They are probably looking for RC4 as the answer.
“As designed, WPA uses TKIP and Michael for message integrity, based on RC4 for encryption.”
https://learningnetwork.cisco.com/thread/11207
“WEP and WPA are both RC4 while WPA2 is AES or more specifically AES based as it is CCMP.”
https://learningnetwork.cisco.com/thread/26079
The answer should be C: AES. WPA uses either TKIP or AES. RC4 is used by WEP and WPA does not use WEP.
agreed. dumps are full of shit