Safe extraction structure for PCB-chip mixed fingerprints

The invention provides a safe extraction structure for PCB-chip mixed fingerprints, which is characterized by comprising a printed circuit board and a fingerprint extraction circuit arranged in the printed circuit board, a chip is arranged above the printed circuit board, a PUF circuit is arranged i...

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Bibliographic Details
Main Authors LU BEN, MA DAN, ZHU XINRUI, HU CHENGKUN, HE ZHANGQING, ZHANG YIN
Format Patent
LanguageChinese
English
Published 20.01.2023
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The invention provides a safe extraction structure for PCB-chip mixed fingerprints, which is characterized by comprising a printed circuit board and a fingerprint extraction circuit arranged in the printed circuit board, a chip is arranged above the printed circuit board, a PUF circuit is arranged in the chip, the printed circuit board comprises a bottom printed circuit board and a top printed circuit board, and the bottom printed circuit board and the top printed circuit board are connected with each other. The fingerprint extraction circuit comprises a discrete resistor and an embedded capacitor; and the fingerprint extraction circuit is connected in series with the PUF circuit in the chip through the port of the chip. According to the security extraction structure disclosed by the invention, the security protection of the information key in the chip is realized by extracting the delay signals mixed in the chip and the circuit board level, and the security extraction structure has good tamper-proof and anti
Bibliography:Application Number: CN202211645502