• Corpus ID: 14122489

Static Analysis for Regular Expression Exponential Runtime via Substructural Logics

@article{Rathnayake2014StaticAF,
  title={Static Analysis for Regular Expression Exponential Runtime via Substructural Logics},
  author={Asiri Rathnayake and Hayo Thielecke},
  journal={ArXiv},
  year={2014},
  volume={abs/1405.7058}
}
Regular expression matching using backtracking can have exponential runtime, leading to an algorithmic complexity attack known as REDoS in the systems security literature. [] Key Method We systematically construct a more accurate analysis by forming powers and products of transition relations and thereby reducing the REDoS problem to reachability. The correctness of the analysis is proved using a substructural calculus of search trees, where the branching of the tree causing exponential blowup is…

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