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US 11,310,062 B2Granted
Securing physically unclonable functions with additional random ternary states
AssigneeArizona Board of Regents On Behalf of Northern Arizona University
InventorsBertrand Francis Cambou, Raul Chipana, Bilal Habib
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Abstract
The present disclosure relates to implementations of computing systems. Specifically, the disclosure describes implementations of physically unclonable functions (PUFs) that use ternary states for implementing security systems.
Claims12
A method of authenticating a physically unclonable function (PUF), comprising:
- generating a PUF challenge by a method comprising:
- generating a first data stream encoding ternary states fora plurality of addressable cells of the PUF, the ternary states corresponding to 0, 1 or X states;
- selecting a subset of the addressable cells reflected in the first data stream having 0 or 1 states, and for the selected cells, changing the encoded state to an X state, resulting in a second data stream encoding ternary states corresponding to 0, 1 and X states;
- storing the second data stream,
- receiving a data stream generated by measuring PUF responses;
- comparing the second data stream to the received data stream, and;
- authenticating a PUF on the basis of the comparison.
4 more elements
Dependencies are inferred from the claim text.