Which of the following can use RC4 for encryption? (Select TWO).

A.
CHAP

B.
SSL

C.
WEP

D.
AES

E.
3DES

Explanation:
B: In cryptography, RC4 (Rivest Cipher 4 also known as ARC4 or ARCFOUR meaning Alleged RC4) is the
most widely used software stream cipher and is used in popular Internet protocols such as Secure Sockets
Layer (SSL) and Transport Layer Security (TLS).
C: WEP also uses RC4, however WEP is still unsecure.
Incorrect Answers:A: the Challenge-Handshake Authentication Protocol (CHAP) does not use RC4.
D: The Advanced Encryption Standard (AES) is a specification for the encryption of electronic data. AES
make no use of RC4.
E: Data Encryption Standard (DES) is a symmetric-key algorithm for the encryption of electronic data. DES
make no use of RC4.
Triple DES (3DES) is the common name for the Triple Data Encryption Algorithm (TDEA or Triple DEA)
symmetric-key block cipher, which applies the Data Encryption Standard (DES) cipher algorithm three
times to each data block.

Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis,
2014, pp. 143, 250, 258, 268-269