Digest authentication verifies that both parties to a communication know a shared secret (a password). Authentication is done without sending the password in the clear. Digest authentication is based on a challenge-response paradigm. The Digest scheme challenges using a nonce ("number used once") value. The response must contain a checksum of the user name, the password, the nonce value, the HTTP method, and the requested URI.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)