Patent ID: 7748036
Filing Date: 2010-06-29
Classification: H04L

Abstract:
1. A method of categorizing random input data in a computer system having a processor, an input/output system, and memory, comprising: generating a first version and a second version of each file in a set of pre-existing data files stored in memory; performing plural first statistical tests on the first and second versions of each file to identify first and second distributions based on statistical results obtained from the first and second versions of the data file, respectively; defining threshold ranges for the first and second distributions, using at least one intersection of a first mathematical expression derived from the first distribution and a second mathematical expression derived from the second distribution; performing plural second statistical tests on the input data; comparing, in the processor, plural second statistical test results to the threshold ranges; and categorizing, in memory, said input data as either compressed or encrypted based on said comparison.