Provided are methods, apparatus and computer programs for identifying matching resources (data files and executable files) within a data processing network, by comparison of hash values computed for each of a set of resources. A match between a newly computed hash value and a previously computed hash...http://www.google.com.au/patents/US7689835?utm_source=gb-gplus-sharePatent US7689835 - Computer program product and computer system for controlling performance of operations within a data processing system or networks
