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US 2019/0165953 A1Published application
Physical unclonable functions related to inverter trip points
AssigneeBar-Ilan University
InventorsJoseph Shor, Roi Levi, Yoav Weizman
Life of this patent
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Abstract
A physical unclonable function (PUF) array includes a plurality of PUF transistor cells each of which includes at least one inverter. An input and an output of the at least one inverter are shorted to a first reference node. There is adjustment circuitry for adjusting a reference voltage of the first reference node, and measurement circuitry for measuring a trip point of the at least one inverter. If the trip point is close to the reference voltage then bits of the at least one inverter are defined as unstable.
Claims11
A physical unclonable function (PUF) array comprising:
- a plurality of PUF transistor cells each of which comprises at least one inverter, wherein an input of said at least one inverter is shorted to a first reference node;
- adjustment circuitry for adjusting a reference voltage of said first reference node;
- and
- measurement circuitry for measuring a trip point of said at least one inverter, wherein if said trip point is close to said reference voltage then bits of said at least one inverter are defined as unstable.
1 more element
Dependencies are inferred from the claim text.