Haynes Beffel & Wolfeld, LLP
Physical unclonable function for security key
A system including a host and a guest device, where the guest device can be implemented on a single packaged integrated circuit or a multichip circuit and have logic to use a physical unclonable function to produce a security key. The device can include logic on the guest to provide the PUF key to the host in a secure manner. The physical unclonable function can use entropy derived from non-volatile memory cells to produce the initial key. Logic is described to disable changes to PUF data, and thereby freeze the key after it is stored in the set.
MACRONIX INTERNATIONAL CO., LTD.
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inventional inventional inventional inventional
Ken-Hui Kuen-Long Chin-Hung
Chen Chang Chang