3.3.4 Higher-Layer Triggered Events

The Digest validation message exchange is triggered by a server that is configured to authenticate users by using the Digest authentication. During the Digest authentication exchange (as specified in [RFC2617] and [RFC2831]), the Digest server initiates the Digest validation exchange with the DC. This transaction does not have direct access to the user's password and relies on the DC to validate the digest input data sent by the client.