Patent ID: 11935341
Assignee: DENSO CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A non-transitory tangible computer readable storage medium comprising instructions being executed by a computer, the instructions including a method in a mobile body for defining a normal world and a secure world where access from the normal world is restricted and for storing a data acquired in the mobile body using a blockchain, the instructions causing at least one processor to execute:
storing an acquired data in a storage area of the normal world;
generating a new block including a hash value based on a last block coupled at last to the blockchain, and a hash value based on the acquired data);
storing a hash value based on the new block as a block hash value, in a storage area of the secure world;
transmitting a backup data of the acquired data to an external memory; and
restoring the acquired data, using the backup data stored in the external memory when an abnormality occurs in the acquired data.