Device and method for data matching and device and method for network intrusion detection
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United States of America Patent
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Feb 9, 2016
Grant Date -
Jul 25, 2013
app pub date -
Mar 12, 2013
filing date -
Nov 1, 2010
priority date (Note) -
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Abstract
The present invention discloses a device and method for data matching and a device and method for network intrusion detection. The method for data matching includes: searching in a regular expression set one or more complex regular expressions causing a sharp increase in number of states generated based on a regular expression during interaction; constructing a corresponding simplified expression for each complex regular expression; compiling a simplified state machine; compiling one or more substate machines, wherein each of the one or more substate machines is compiled based on a corresponding one of the one or more complex regular expressions; and matching data based on the simplified state machine and the one or more substate machines. The present invention further discloses a device for data matching employing the method for data matching and a device and method for intrusion detection employing the device and method for data matching.
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