发明名称 |
Physically unclonable function implemented through threshold voltage comparison |
摘要 |
Electronic devices and methods are disclosed to provide and to test a physically unclonable function (PUF) based on relative threshold voltages of one or more pairs of transistors. In a particular embodiment, an electronic device is operable to generate a response to a challenge. The electronic device includes a plurality of transistors, with each of the plurality of transistors having a threshold voltage substantially equal to an intended threshold voltage. The electronic device includes a challenge input configured to receive the challenge. The challenge input includes one or more bits that are used to individually select each of a pair of transistors of the plurality of transistors. The electronic device also includes a comparator to receive an output voltage from each of the pair of transistors and to generate a response indicating which of the pair of transistors has the higher output voltage. The output voltage of each of the pair of transistors varies based on the threshold voltage of each of the pair of transistors. |
申请公布号 |
US8619979(B2) |
申请公布日期 |
2013.12.31 |
申请号 |
US20100823278 |
申请日期 |
2010.06.25 |
申请人 |
FICKE JOEL T.;HALL WILLIAM E.;HOOK TERENCE B.;SPERLING MICHAEL A.;WISSEL LARRY;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
FICKE JOEL T.;HALL WILLIAM E.;HOOK TERENCE B.;SPERLING MICHAEL A.;WISSEL LARRY |
分类号 |
G06F21/73;H04L9/08 |
主分类号 |
G06F21/73 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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