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Conventionally, dictionary-based string pattern matching (SPM) has been implemented as Aho-Corasick deterministic finite automaton (AC-DFA). Due to its large memory footprint, a large-dictionary AC-DFA can experience poor cache performance when matching against inputs with high match ratio on multicore processors. We propose a head-body finite automaton (HBFA), which implements SPM in two parts: a...
Dictionary-based string matching (DBSM) is a critical component of Deep Packet Inspection (DPI), where thousands of malicious patterns are matched against high-bandwidth network traffic. Deterministic finite automata constructed with the Aho-Corasick algorithm (AC-DFA) have been widely used for solving this problem. However, the state transition table (STT) of a large-scale DBSM AC-DFA can span hundreds...
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