Patent ID: 9363261
Filing Date: 2016-06-07
CPC Classification: H04L

Claim Text:
1. A method of authenticating computer nodes on a network, comprising: providing a synchronized clock system, at a predetermined clock frequency, for use with an electronic system with a plurality of system nodes; connecting a respective one of a matching number of counters to each of the plurality of system nodes, each of the number of counters being incremented in accordance with the clock frequency experienced by the respective one of the plurality of system nodes to which the respective one of the matching number of counters is connected; over a time interval having a beginning and an end, for each counter, calculating the difference between a count number at the end of the interval and the count number for the same counter at the beginning of the interval, to arrive at a count difference for each counter; comparing the count difference of a particular counter with the count difference of at least two different counters and, in the event that the count difference of the particular counter is not equal to the count difference of the two different counters, emitting a notice that the node having the particular counter is an imposter.