发明名称 |
Data recording device, host device and method of processing data recording device |
摘要 |
A data storage unit can store an encrypted medium device key Enc (Kcu, Kmd_i), and a medium device key certificate (Certmedia). A controller can include an information recording unit to store a controller key (Kc) and first controller identification information (IDcu). A key generation unit executes a one-way function calculation based on the controller key and the first controller identification information to generate a controller unique key (Kcu). An identification information generating unit executes a one-way function calculation based on the controller key and the first controller identification information to generate second controller identification information (IDcntr). A key encryption unit encrypts the medium device key (Kmd_i) by the controller unique key (Kcu) to generate encrypted medium device key Enc (Kcu, Kmd_i). A key exchange unit executes an authentication key exchange process with a host device using the medium device key (Kmd_i) and the medium device key certificate (Certmedia). |
申请公布号 |
US8745391(B2) |
申请公布日期 |
2014.06.03 |
申请号 |
US201213513469 |
申请日期 |
2012.03.22 |
申请人 |
Kabushiki Kaisha Toshiba |
发明人 |
Kato Taku;Nagai Yuji;Matsushita Tatsuyuki |
分类号 |
G06F21/00 |
主分类号 |
G06F21/00 |
代理机构 |
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代理人 |
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主权项 |
1. An information recording device, comprising:
a data storage device configured to store:
an encrypted medium device key generated by encrypting a medium device key, which functions as a secret key of a public key cryptosystem, using a controller unique key, anda medium device key certificate, which functions as a public key of the public key cryptosystem; and a controller, including:
an information recording unit configured to store a controller key and first controller identification information unique to the controller;a key generation unit configured to execute a first one-way function calculation based on the controller key and the first controller identification information to generate the controller unique key, which is unique to the controller;an identification information unit configured to execute a second one-way function calculation based on the controller key and the first controller identification information to generate second controller identification information;a key encryption unit configured to encrypt the medium device key by using the controller unique key to generate the encrypted medium device key; anda key exchange unit configured to execute an authentication key exchange process with a host device using the medium device key and the medium device key certificate.
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地址 |
Tokyo JP |