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US 11,106,829 B2Granted
Chip fingerprint management based upon one-time programmable memory
AssigneeInnogrit Technologies Co., Ltd.
InventorMoyang Chen
Life of this patent
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Abstract
A chip fingerprint management device includes: a one-time programmable (OTP) memory including a first storage region, the first storage region being readable by hardware and access restricted by software; and an OTP controller which generates a chip fingerprint based on a random number, and programs the generated chip fingerprint into the first storage region in the OTP memory.
Claims13
A chip fingerprint management device, comprising:
- a one-time programmable (OTP) memory comprising a first storage region, the first storage region being readable by hardware and access restricted by software;
- and
- an OTP controller configured to:
- generate a random number;
- generate a chip fingerprint based on the random number;
- determine whether the random number is valid for the chip fingerprint;
- generate an error when the random number is not valid for the chip fingerprint;
- program the generated chip fingerprint into the first storage region in the OTP memory when the random number is determined valid for the chip fingerprint;
- compare the chip fingerprint to one or more copies of the chip fingerprint when the one or more copies are stored in the OTP memory;
- and
- determine a chip fingerprint read fails when the comparison of the chip fingerprint to the one or more copies of the chip fingerprint fails.
8 more elements
Dependencies are inferred from the claim text.