INFORMATION PROCESSING SYSTEM, SERVER DEVICE, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM

摘要

A server device that is a first-facility terminal device configured to transmit issuance information issued by a first facility to a user terminal device of a user of the first facility, includes: a first-facility encrypting unit configured to encrypt the issuance information issued by the first facility using a public key acquired from the user terminal device, and a first-facility terminal transmitting unit configured to transmit, when the user terminal device is connected to a network to which the first-facility terminal device is connected, the issuance information without encryption to the user terminal device, and to transmit, when the user terminal device is not connected to the network, the encrypted issuance information to the user terminal device.

主权项

1. An information processing system comprising at least a first-facility terminal device of a first facility and a user terminal device of a user of the first facility, wherein
the first-facility terminal device is configured to include: a first-facility encrypting unit configured to encrypt issuance information issued by the first facility using a public key acquired from the user terminal device, and a first-facility terminal transmitting unit configured to transmit, when the user terminal device is connected to a network to which the first-facility terminal device is connected, the issuance information without encryption to the user terminal device, and to transmit, when the user terminal device is not connected to the network, the encrypted issuance information to the user terminal device, and the user terminal device is configured to include: a user-terminal transmitting unit configured to transmit the public key of the user terminal device to the first-facility terminal device, a user-terminal receiving unit configured to receive the issuance information not encrypted or the encrypted issuance information transmitted from the first-facility terminal device, and a user-terminal decrypting unit configured to decrypt the encrypted issuance information using a private key that is paired with the public key.