Patent ID: 9413532
Filing Date: 2016-08-09
CPC Classification: G06F,H04L

Claim Text:
1. A host device configured to be connected to a data recording device, the data recording device comprising a memory configured to store various types of data, and a controller provided with a controller key and a first controller identification information to control the memory, and configured to perform an authentication process with the data recording device to supply data thereto, the host device comprising: a memory storing a host device key functioning as a private key of a public key cryptosystem and a host device certificate functioning as a public key of the public key cryptosystem; an authentication/key exchange processor configured to perform an authentication/key exchange process with the data recording device using the host device key and the host device certificate to receive a medium device key certificate ID held in the data recording device and contained in the medium device key certificate ID functioning as a public key of the public key cryptosystem; an interface configured to perform data communication with the data recording device through a secure channel; and an identification information generating unit configured to receive second controller identification information generated in the data recording device based on the first controller identification information by data communication through the secure channel and the interface, and generate data recording device identification information based on the received second controller identification information and the medium device key certificate ID.