H

hash

A fixed-size result that is obtained by applying a one-way mathematical function (sometimes called a hash algorithm) to an arbitrary amount of data. If there is a change in the input data, the hash changes. The hash can be used in many operations, including authentication and digital signing. Also called a message digest.

See also authentication.

hub-and-spoke

For Windows Internet Name Service (WINS), a server configuration that uses a central "hub" as a point of contact for many outlying WINS server "spokes" to improve convergence time.

See also convergence time.

See also Windows Internet Name Service (WINS).