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factory functions

module_name: used to identify a module, is unique and used in graph configuration module_revision: the version of a module module_type: the runtime ty

fast 0..255 * 0..255 => 0..255 rounded multiplication

if there's a pending marker from the entropy stream, return that otherwise, fetch from the stream and get a marker. if there's no marker, return 0xff,

@brief close module and release resources @return 0 for success, else for failed. */

Check if there is no key at all

@brief set module mode to flush data @return 0 for success, else for failed. */