Patent ID: 11962693
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A non-transitory computer-readable medium including contents that are configured to cause a computing system to generate a security key for an integrated circuit device, the method comprising:
generating a plurality of key bits with a random number generator;
storing the plurality of key bits in a nonvolatile memory that comprises a one-time programmable (OTP) device;
generating the security key from the plurality of key bits stored in the nonvolatile memory; and
locking the OTP device after storing the plurality of key bits, wherein a lock bit is set in the OTP device to indicate that the OTP device is locked, wherein, after the lock bit is set, the OTP device does not store additional bits.