Information processing device and computer program product
OwnerYoshikazu HANATANI, Toru KAMBAYASHI +1inventors
InventorsYoshikazu HANATANI, Toru KAMBAYASHI, Masahiro ISHIYAMA
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Abstract
According to an embodiment, an information-processing device is coupled to an external device and a server. The information-processing device includes a device key storage configured to store a device key; and an MKB processor configured to generate a media key from the device key and a media key block. The information-processing device also includes a shared key generator configured to generate a shared key from the media key and secret information transmitted from the server. The shared key is shared by the information-processing device and the external device.
Claims9
An information-processing device to be coupled to an external device and a server, the information-processing device comprising:
- a device key storage configured to store a device key;
- an MKB processor configured to generate a media key, the media key being generated from the device key and a media key block;
- and
- a shared key generator configured to generate a shared key, the shared key being generated from the media key and secret information transmitted from the server, the shared key being shared between the information-processing device and the external device.
A computer program product comprising a computer-readable medium containing a program executed by a computer coupled to an external device and a server, the program causing the computer to execute:
- generating a media key, the media key being generated from a device key and a media key block;
- and
- generating a shared key, the shared key being generated from secret information and the media key, the secret information being transmitted from the server, the shared key being shared by the computer and the external device.
Dependencies are inferred from the claim text.