Answer and Explanation:
Digest authentication :
Digest authentication is a technique of authentication in which a request from potential client is received by a system server and after that sent to a space controller.
How it is work :
Digest authentication averts replay assaults by utilizing a server-indicated nonce. The server produces an irregular nonce when the customer endeavors to make an unauthenticated demand, customer needs to join the nonce into its reaction. It's dependent upon the server to oversee substantial nonces, and nullify them when they've been utilized, to anticipate replays
