US 2024/0187261 A1Published application

Integrated circuit for adaptive puf stabilization process

AssigneeNational Yang Ming Chiao Tung University

InventorsWai-Chi Fang, Nicolas-Jean Roger FAHIER, Meng-Ting WAN, Hao-Ting LIN

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Abstract

An IC for adaptive PUF stabilization process includes a PUF stabilizer and a non-volatile memory. The PUF stabilizer has PUF units, a statistic processor, a majority voting generator, and a dark-bit masker. The statistic processor is connected to the PUF units, and performs measurements on the PUF units to output results. The majority voting generator is connected to the statistic processor to accumulate the results into a statistic result, which is output as a PUF bit. The dark-bit masker is connected to the PUF units, and marks unstable PUF units bit as dark-bit and create dark-bit masks. The non-volatile memory is connected to the PUF stabilizer to store the dark-bit masks, and the dark-bits are replaced by specific bit sequences provided by the PUF stabilizer. This decreases bit error rates of the PUF measurement results, and allows customization of the quantity of dark bits per dark-bit mask used.

Claims10

Dependent claims

An IC for an adaptive PUF stabilization process, comprising:

a PUF stabilizer, having:
a plurality of PUF units, including unstable PUF units and stable PUF units;
a statistic processor, telecommunicatively connected to the PUF units, respectively, and each configured to perform a plurality of measurements on a single one of the PUF units in a predetermined period and output a statistic result which is an accumulated sum of different results of the measurements;
a majority voting generator, telecommunicatively connected to the statistic processor, and each configured to output the statistic result as a PUF bit;
a dark-bit masker, telecommunicatively connected to the PUF units, respectively, and each configured to mark the unstable PUF units as dark-bit masks;
and
a non-volatile memory, telecommunicatively connected to the PUF stabilizer, and each configured to store the dark-bit masks each having plural dark bits replaced by a specific sequence provided by the stabilization process.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/091,580Filed 30 Dec 2022
Priority: TW 1111463952 Dec 2022
Published: 6 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04L 9/3278
Using challenge-response: using physically unclonable functions [PUF]
G06F 21/73
To assure secure computing or processing of information: by creating or determining hardware identification, e.g. serial numbers
G06F 21/75
To assure secure computing or processing of information: by inhibiting the analysis of circuitry or operation
G09C 1/00
Apparatus or methods whereby a given sequence of signs