Patent ID: 11968317
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An operation method of a physical unclonable function (PUF) cell device including a plurality of PUF cells, the method comprising:
selecting a first target PUF cell of the plurality of PUF cells;
applying a first voltage to a first word line connected with the first target PUF cell;
generating a first target value based on a first target current corresponding to the first target PUF cell and generating a first central value based on a first sum current corresponding to a sum of first currents output from first PUF cells, connected with the first word line, of the plurality of PUF cells;
determining a first target bit of the first target PUF cell based on the first target value and the first central value; and
generating a security key based on the first target bit for responding to an authentication request.