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    • 1. 发明授权
    • Method and system for non-deterministic finite automaton filtering
    • 非确定性有限自动机滤波的方法和系统
    • US07710988B1
    • 2010-05-04
    • US11373228
    • 2006-03-10
    • Devendra TripathiKeith KongAlak DebDebashis Chatterjee
    • Devendra TripathiKeith KongAlak DebDebashis Chatterjee
    • H04L12/28
    • H04L63/0227
    • A structural matching engine for non-deterministic filtering operations is provided. The structural matching engine includes an active node processor (ANP) configured to process a state of an active list to determine possible future states of a non-deterministic finite automaton (NFA). The ANP processes the state according to rules. The structural matching engine includes an active list processor (ALP) configured to initiate a lookup for a token value corresponding to the state of the active list. The ALP provides a next sate of the active list to the ANP for processing according to the rules upon completion of the processing of the state by the ANP, wherein the possible future states of the NFA are linked by the ALP to form a target list, the target list stacked on top of the active list in a data structure. A processor and a method for filtering data associated with non-deterministic states are also included.
    • 提供了一种用于非确定性过滤操作的结构匹配引擎。 结构匹配引擎包括被配置为处理活动列表的状态以确定非确定性有限自动机(NFA)的可能未来状态的主动节点处理器(ANP)。 ANP根据规则处理状态。 结构匹配引擎包括被配置为发起对应于活动列表的状态的令牌值的查找的活动列表处理器(ALP)。 ALP在完成ANP处理状态时根据规则向ANP提供活动列表的下一个状态,其中NFA的可能未来状态由ALP链接以形成目标列表, 目标列表堆叠在数据结构中的活动列表的顶部。 还包括用于过滤与非确定性状态相关联的数据的处理器和方法。