Patent ID: 11943372
Assignee: A42 INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 11:
12. A use right information processing apparatus for performing processes related to authentication and authorization for a user to use a device to be controlled using a smart contract that functions with a computer executing a code recorded on a blockchain, the use right information processing apparatus comprising:
a storage unit that stores authentication data shared with a user terminal used by the user and having a different value for each of the processes;
a receiving unit that receives, from the user terminal, signature data generated in the user terminal by signing the authentication data with a predetermined signature algorithm using a secret key corresponding to the user;
a deriving unit that derives, using the predetermined signature algorithm, a public key corresponding to the secret key from the authentication data and the signature data received by the receiving unit; and
an acquisition unit that obtains, using the public key or identification information corresponding to the public key, information regarding a use right of the device of the user recorded in advance in association with the public key or the identification information in the smart contract, wherein
the receiving unit further receives a control instruction to the device from the user terminal, and
the use right information processing apparatus further comprising a device control unit that transmits the control instruction to the device in a case where the user is determined to be allowed to use the device on a basis of the information regarding the use right obtained by the acquisition unit.