What Does Challenge Handshake Authentication Protocol (CHAP) Mean?
Challenge Handshake Authentication Protocol (CHAP) is a process of authenticating a user to a network entity, which may be any server, e.g., the web or internet service provider (ISP).
Techopedia Explains Challenge Handshake Authentication Protocol (CHAP)
CHAP ensures that the server sends a challenge to the client after the client establishes a network connection to access a web/ISP server. This challenge is received via the same network line. The client uses a hash function to calculate a specific value that is then sent to the server, which matches the incoming value against the server’s calculated value. If the values match, the client is granted server access. Otherwise, the connection is automatically terminated.
