Patent ID: 11870779
Assignee: MICRON TECHNOLOGY, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 5:
6. A method, comprising:
defining an address of a secure array of a memory via one or more registers;
generating a cryptographic hash associated with the secure array responsive to defining the address of the secure array;
detecting a power on of a vehicle;
comparing a run-time cryptographic hash with the cryptographic hash stored in the secure array in response to detecting the power on;
determining an electronic control unit is unauthentic in response to the run-time cryptographic hash and the cryptographic hash being unequal;
receiving an updated cryptographic hash in response to replacing the electronic control unit;
storing the updated cryptographic hash in the secure array;
generating an updated run-time cryptographic hash;
comparing the updated run-time cryptographic hash with the updated cryptographic hash;
determining the replacement electronic control unit is authentic in response to the updated run-time cryptographic hash and the updated cryptographic hash being equal; and
determining the replacement electronic control unit is unauthentic in response to the updated run-time cryptographic hash and the updated cryptographic hash being unequal.