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Digest authentication is secure due to the way it passes authentication information over the network. Usernames and passwords are never sent. Instead, IIS uses a message digest (or hash) to verify the user's credentials.
Digest Authentication communicates credentials in an encrypted form by applying a hash function to: the username, the password, a server supplied nonce value, the HTTP method and the requested URI. Whereas Basic Authentication uses non-encrypted base64 encoding.
Something you should NEVER EVER use. Doesn't protect the password in transit and requires the server to store passwords in plain. Digest does provide better in-transit security than Basic authentication for unencrypted traffic, but it's weak.
Digest authentication is a method of authentication in which a request from a potential user is received by a network server and then sent to a domain controller. The domain controller sends a special key, called a digest session key, to the server that received the original request.
What is the difference between HTTP Digest Authentication and SSL from a performance, security and flexibility point of view?
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