The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 2008
Filed:
Aug. 14, 2003
Sarang Dharmapurikar, St. Louis, MO (US);
Praveen Krishnamurthy, St. Louis, MO (US);
Todd Sproull, St. Louis, MO (US);
John Lockwood, St. Louis, MO (US);
Sarang Dharmapurikar, St. Louis, MO (US);
Praveen Krishnamurthy, St. Louis, MO (US);
Todd Sproull, St. Louis, MO (US);
John Lockwood, St. Louis, MO (US);
Washington University, St. Louis, MO (US);
Abstract
The present invention relates to a method and apparatus based on Bloom filters for detecting predefined signatures (a string of bytes) in a network packet payload. A Bloom filter is a data structure for representing a set of strings in order to support membership queries. Hardware Bloom filters isolate all packets that potentially contain predefined signatures. Another independent process eliminates false positives produced by the Bloom filters. The system is implemented on a FPGA platform, resulting in a set of 10,000 strings being scanned in the network data at the line speed of 2.4 Gbps.
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