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Regular expression (RegEx) matching, the core operation of intrusion detection and prevention systems, remains a fundamentally challenging problem. A desired RegEx matching scheme should satisfy four requirements: deterministic finite state automata (DFA) speed, nondeterministic finite state automata (NFA) size, automated construction, and scalable construction. Despite lots of work on RegEx matching,...
Regular Expression (RegEx) matching is the core operation of various network security devices such as IPSes. Despite much effort, it has remained an unsolved problem to achieve both high speed and low memory requirements.XFA, the state-of-the-art software RegEx matching solution, has two fundamental limitations: (1) XFA construction is hard to automate as it requires manual annotation by human experts,...
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