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公开(公告)号：US11303461B2
公开(公告)日：2022-04-12
申请号：US16677901
申请日：2019-11-08
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ihor Vasyltsov , Karpinskyy Bohdan , Kalesnikau Aliaksei , Yun-Hyeok Choi
Abstract: The inventive concept provides a security device capable of reducing an area of a die required for implementation of a stable PUF by increasing the value of entropy from a predefined number of entropy sources and/or minimizing a blind zone of a validity checking module. The security device uses an asynchronous configuration to minimize a blind zone. In various embodiments of the inventive concept, the blind zone is generated only in a period when a reset signal is at a first logic level. Therefore, it is possible to minimize the blind zone by minimizing a period in which the reset signal is at such logic level. A semiconductor device, semiconductor package, and/or smart card can be provided with such security device, as well as a method for determining a validity of a random signal using a semiconductor security device.
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2.发明申请公开(公告)号：US20220318436A1
公开(公告)日：2022-10-06
申请号：US17847593
申请日：2022-06-23
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Bohdan Karpinskyy , Yong-ki LEE , Ji-eun Park , Kyoung-moon Ahn , Yun-Hyeok Choi
Abstract: An integrated circuit including: a plurality of physically unclonable function (PUF) cells each configured to generate a cell signal having a unique value; a selector configured to output a first signal obtained by not inverting a cell signal output by a PUF cell selected from the plurality of PUF cells and a second signal obtained by inverting the cell signal; and a key generator configured to generate a security key in response to the first signal or the second signal, wherein the selector includes a first conversion circuit configured to generate the first signal and a second conversion circuit having the same structure as the first conversion circuit and configured to generate the second signal.
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