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:
Jan. 01, 2013
Filed:
Jul. 29, 2008
Jason D. Preston, Austin, TX (US);
Jason D. Preston, Austin, TX (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Methods and systems are provided for using incremental operation for processing regular expressions in intrusion-prevention systems. In an embodiment, a state-transition table is provided, said table representative of a predetermined data pattern, and including states each having one or more egress events defining transitions to other states. A first portion of a subject is received, where the subject is to be evaluated for the presence of the predetermined data pattern. While using the state-transition table for said evaluation, a first state is transitioned into, after which it is determined that a set of restart information should be saved for the first state, said determination including identifying a tail to save from an end of the first portion of the subject. The restart information is saved, along with at least the identified tail.