Information processing device, information processing method, and storage medium

An information processing device that mediates exchange of user data between a data consumer (DC) and a data provider (DP), the information processing device comprising:

• a communication device configured to communicate with the DC and the DP via a network;
• a storage unit configured to store, in association, a first identifier issued to the DC, a second identifier issued to the DP, and a third identifier, the first identifier, the second identifier, and the third identifier corresponding to a same user;
• and
• a control unit including a processor and a memory storing instructions that cause the processor to execute processes comprising:
• transmitting, by the communication device, the first identifier in response to a request to issue a user identifier for a user transmitted from the DC;
• transmitting, by the communication device, the second identifier in response to a request to issue a user identifier for the user transmitted from the DP;
• receiving, by the communication device, a ticket issuance request from the DC, the ticket issuance request including information that specifies user data requested by the DC, the first identifier, and an identifier of the requested DP;
• issuing, by the control unit, a data request ticket corresponding to the ticket issuance request, the data request ticket including the third identifier stored in association with the first identifier, the third identifier being associated with the first identifier and the second identifier in the storage unit;
• transmitting, by the communication device, a ticket identifier of the issued data request ticket to the DC;
• in response to receiving, from the DP, the ticket identifier of the data request ticket, transmitting, by the communication device, the data request ticket to the DP after replacing the third identifier included in the data request ticket with the second identifier corresponding to the first identifier stored in the storage unit;
• managing, in the storage unit, a state of the data request ticket in accordance with access from the DC and the DP;
• identifying which of the DC and the DP is a cause of an error in a case where the state of the data request ticket has transitioned to an error state;
• notifying the DC or the DP that has been identified;
• and
• deleting or encrypting, in the storage unit, the third identifier included in the data request ticket in response to determining that the data request ticket has transitioned to a data consumer completed state.

An information processing method performed by an information processing device that mediates exchange of user data between a data consumer (DC) and a data provider (DP), the information processing method comprising:

• a first identifier issuance step of transmitting a first identifier in response to a request to issue a user identifier for a user transmitted from the DC;
• a second identifier issuance step of transmitting a second identifier in response to a request to issue a user identifier for the user transmitted from the DP;
• a storage step of storing, in association, the first identifier issued to the DC, the second identifier issued to the DP, and a third identifier in a storage unit, the first identifier, the second identifier, and the third identifier corresponding to a same user;
• a reception step of receiving a ticket issuance request from the DC, the ticket issuance request including information that specifies user data requested by the DC, the first identifier, and an identifier of the requested DP;
• an issuance step of issuing a data request ticket corresponding to the ticket issuance request, the data request ticket including the third identifier stored in association with the first identifier, the third identifier being associated with the first identifier and the second identifier in the storage unit;
• a ticket identifier transmission step of transmitting a ticket identifier of the issued data request ticket to the DC;
• a transmission step of transmitting the data request ticket to the DP in response to receiving, from the DP, the ticket identifier of the data request ticket, transmitting including replacing the third identifier included in the data request ticket with the second identifier corresponding to the first identifier;
• a ticket state management step of managing, in the storage unit, a state of the data request ticket in accordance with access from the DC and the DP;
• an error identification step of identifying which of the DC and the DP is a cause of an error in a case where the state of the data request ticket has transitioned to an error state;
• a notification step of notifying the DC or the DP that has been identified as the cause of the error;
• and
• a deletion or encryption step of deleting or encrypting, in the storage unit, the third identifier included in the data request ticket in response to determining that the data request ticket has transitioned to a data consumer completed state.