The Hash class is a utility for creating hash digests of data. It can be used in one of two ways:

Transform streams are Duplex streams where the output is in some way related to the input. Like all Duplex streams, Transform streams implement both the Readable and Writable interfaces.

Creates and returns a Hash object that can be used to generate hash digests using the given algorithm. Optional options argument controls stream behavior.

Returns an array of the names of the supported hash algorithms, such as 'sha1'.