Patent ID: 11968525
Assignee: KSMARTECH CO., LTD
Field: Digital communication (Electrical engineering)
Classification: CPC H  B  G | IPC B  G  H

Claim 3:
4. The vehicle digital key sharing service method of claim 2, wherein the step of registering the digital key in a vehicle device-based telematics support mode comprises: receiving and storing, by the mobile terminal accessing the management server through the dedicated application, a server public key from the management server and generating a terminal public key and a terminal private key; forwarding, by the mobile terminal, a server public key to the vehicle device; encrypting, by the vehicle device, vehicle information with the server public key and transmitting the encrypted vehicle information to the management server; encrypting, by the mobile terminal, terminal information with the server public key and transmitting the encrypted terminal information to the management server;
decrypting, by the management server, the information received from the mobile terminal, encrypting the digital key using each of a vehicle public key included in the vehicle information and a terminal public key included in the terminal information, and then transmitting the vehicle digital key to the vehicle device and transmitting the terminal digital key to the mobile terminal; receiving, by the mobile terminal, the encrypted terminal digital key from the management server, decrypting the received terminal digital key, and storing the decrypted terminal digital key in the secure world; and receiving, by the vehicle device, the encrypted vehicle digital key from the management server and decrypting and storing the received vehicle digital key.