SECURE UPDATE PROCESSING OF TERMINAL DEVICE USING AN ENCRYPTION KEY STORED IN A MEMORY DEVICE OF THE TERMINAL DEVICE
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United States of America Patent
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Issued Date -
Jan 19, 2017
app pub date -
Feb 23, 2016
filing date -
Jul 14, 2015
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Abstract
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.
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