METHODS AND SYSTEMS FOR ACHIEVING TRUSTED FAULT TOLERANCE OF A SYSTEM OF UNTRUSTED SUBSYSTEMS
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United States of America Patent
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Aug 31, 2017
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Sep 9, 2016
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Systems and methods for trusted integration of untrusted components. An example system includes at least three electrical components and voting (consensus) circuitry. The components have varied hierarchical implementations for providing common output given common input. The voting circuitry is configured to receive, as input, outputs from the components and provide a consensus output that is a majority of the outputs received from the components. Such a diversity of multiple untrusted system components (hardware and/or software) engaged in redundant operation can be integrated to as a consensus-based trusted system with a high degree of fault tolerance to unforeseen environmental interference, cyber-attack, supply chain counterfeit, inserted Trojan logic, or component design flaws. The degree of fault tolerance can be increased by increasing the degree of diversity of redundant operational nodes or by increasing the number of diversely implemented operational nodes.
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