SECURE UPDATE PROCESSING OF TERMINAL DEVICE USING AN ENCRYPTION KEY STORED IN A MEMORY DEVICE OF THE TERMINAL DEVICE

摘要

An update processing is carried out on a terminal through communication with an external device connected therewith over a network. The terminal includes a processor configured to receive an update request from the external device, the update request including update data and challenge data, and a storage device in which original data to be updated and a private key are stored. The storage device is configured to update the original data using the update data and generate a digital signature of the challenge data using the private key. The processor is further configured to transmit the digital signature of the challenge data to the external device as a completion notification of the update processing.

主权项

1. A terminal for which update processing is carried out through communication with an external device connected therewith over a network, comprising:
a processor configured to receive an update request from the external device, the update request including update data and challenge data; and a storage device in which original data to be updated and a private key are stored, the storage device being configured to update the original data using the update data and generate a digital signature of the challenge data using the private key, wherein the processor is further configured to transmit the digital signature of the challenge data to the external device as a completion notification of the update processing.