A SYSTEM FOR MAINTAINING DATA

摘要

The invention provides a method, for maintaining data stored in a processing device the method comprising the steps of: generating a signature indicative of the data stored in the processing device; communicating the signature to a maintenance node; and receiving updated data from the maintenance node, the updated data being generated by the maintenance node in dependence of the maintenance node comparing the communicated signature with lookup data to determine an update to the data stored in the processing device.