US 12,407,529 B2
Server, information management system, and information management method
Noboru Shimizuike, Tokyo (JP); Hitoshi Murakami, Tokyo (JP); and Jiro Iwasaki, Tokyo (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Dec. 28, 2023, as Appl. No. 18/398,880.
Claims priority of application No. 2023-017422 (JP), filed on Feb. 8, 2023.
Prior Publication US 2024/0297798 A1, Sep. 5, 2024
Int. Cl. H04L 9/32 (2006.01); H04L 9/00 (2022.01); H04L 9/08 (2006.01)
CPC H04L 9/3268 (2013.01) [H04L 9/007 (2013.01); H04L 9/0825 (2013.01); H04L 9/3247 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A server, comprising:
a communication device configured to communicate with a communication terminal of a holder; and
a processor configured to
issue a verifiable credential in response to an issuance request signal received from the communication terminal, the issuance request signal being a signal requesting issuance of the verifiable credential, and containing attribute information of the holder and a first decentralized identifier that is a decentralized identifier of the holder,
set a validity period for the verifiable credential based on the attribute information of the holder, and
associate the set validity period with the first decentralized identifier;
wherein the attribute information contains information entered by the holder and information on an identity verification document of the holder; and
the processor is configured to issue the verifiable credential when identity verification of the holder is successfully completed by checking the information entered by the holder against the information on the identity verification document; and
wherein the processor is configured to determine, based on the attribute information of the holder, which group the holder belongs to out of a plurality of groups with different levels of credibility; and
the processor is configured to set the validity period longer when the holder belongs to the group with a high level of credibility than when the holder belongs to the group with a low level of credibility.