Communication control device
AssigneeKabushiki Kaisha Toshiba
InventorsYoshihiro OBA, Yoshikazu HANATANI
Life of this patent
Estimating the term…
Abstract
According to an embodiment, a communication control device includes a generation unit and a control unit. The generation unit generates, in a system using a group key block, a group key corresponding to an individual communication group formed by two communication devices by using an manipulation command including a digital signature of the communication control device. The control unit controls a group manipulation of the communication devices by using a group manipulation command message to which an authentication code according to the generated group key is attached.
Claims11
A communication control device comprising:
- a generation unit to generate, in a system using a group key block, a group key corresponding to an individual communication group formed by two communication devices by using an manipulation command including a digital signature of the communication control device;
- and
- a control unit to control a group manipulation of the communication devices by using a group manipulation command message to which an authentication code according to the generated group key is attached.
A communication control device comprising:
- a communication unit to notify a group member about a synchronous counter that increases monotonically by using a synchronous counter update notification including a digital signature of the communication control device;
- and
- an update unit to update a synchronous counter value of the synchronous counter.
Dependencies are inferred from the claim text.