Exam CISSP-ISSAP topic 1 question 37 discussion

The correct answer is A. CHAP. CHAP (Challenge Handshake Authentication Protocol) is a protocol commonly used in authentication processes, often in remote access scenarios. It uses the Message Digest (MD5) hashing function to compare two values - one generated by the client and the other stored on the server. The comparison helps verify the identity of the client trying to establish a connection with an authenticator. PEAP (Protected Extensible Authentication Protocol), EAP (Extensible Authentication Protocol), and EAP-TLS (EAP-Transport Layer Security) are also authentication protocols, but they do not specifically involve comparing values calculated using MD5 hashing for their operation.