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Investigating correct-by-construction attack-tolerant systems

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Abstract

Attack-tolerant distributed systems change their protocols on-the-fly in response to apparent attacks from the environment; they substitute functionally equivalent versions possibly more resistant to detected threats. Alternative protocols can be packaged together as a single adaptive protocol or variants from a formal protocol library can be sent to threatened groups of processes. We are experimenting with libraries of attack-tolerant protocols that are correct-by-construction and testing them in environments that simulate specified threats, including constructive versions of the famous FLP imaginary adversary against fault-tolerant consensus. We expect that all variants of tolerant protocols are automatically generated and accompanied by machine checked proofs that the generated code satisfies formal properties.

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DARPA

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2011-09-12

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distributed system; adaptive; correct-by-construction; logic

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technical report

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