Electronic key registration method and electronic key registration system

Abstract

An electronic key registration method that registers an electronic key (2) capable of controlling a communication target, to a control device (6) being the communication target, said method comprising: an initial production step that saves to the control device (6) identification information (VID-A) unique to the communication target, and saves to the electronic key an encryption key generating code (SC-1) unique to the electronic key (2), and an encryption key (K-1) used for verifying the electronic key; and an initial registration step in which the identification information (VID-A) saved to the control device is written to the electronic key, the encryption key generating code (SC-1) is obtained from the electronic key, the encryption key (K-1) is generated using encryption key generating logic (f) that uses the encryption key generating code, that encryption key is saved to the control device, and the encryption key information relating to the encryption key (K-1) is associated to the identification information (VID-A) and saved to a database (9).

Description

technical field [0001] The invention relates to an electronic key registration method and an electronic key registration system for registering an electronic key to a control device of a communication object. Background technique [0002] Conventionally, there is known an electronic key system that performs wireless communication between the electronic key held by the user of the vehicle and the vehicle, and locks and unlocks the doors or starts and stops the engine based on the establishment of authentication of the electronic key. wait for action. In such an electronic key system, in order to maintain security, it is necessary to protect communication between the electronic key and the vehicle. Therefore, in the electronic key system, encrypted communication is performed between the electronic key and the vehicle (for example, refer to Patent Document 1). In encrypted communication, since the communication content is encrypted, it has good confidentiality. [0003] As a...

AI Technical Summary

Problems solved by technology

Although it is conceivable to ship the control unit and the electronic key together, it is complicated, and the electronic key cannot be additionally registered after shipment

In addition, the same problem exists not only in electronic key systems used in vehicles, but also in electronic key systems used in buildings such as houses.

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