Digital-key sharing method, digital-key authentication method, and computing device

A method for authenticating a shared digital key, performed by a target object, the method comprising:

• receiving, from a device providing the digital key, a key authentication request including a certificate of the digital key and valid space information of the digital key;
• authenticating the certificate of the digital key;
• and
• determining, based on a usage location of the digital key, whether a space requirement corresponding to the valid space information is satisfied.

A digital key sharing method from a first device to a second device, performed by a server, the method comprising:

• receiving, from the first device, a digital key creation request including location information of the first device for determining valid space information of the digital key or including the valid space information;
• generating configuration information for generating the digital key at the second device based on the valid space information;
• and
• sending the configuration information to the second device for the second device to generate the digital key, wherein the digital key includes the valid space information.