Method for Device Insertion Into a Community of Network Devices
AssigneeThomson Licensing
InventorsNicolas Prigent, Olivier Heen, Jean-Pierre Andreaux
Life of this patent
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Abstract
A method for performing at least one evolution operation in a dynamic, evolutive community of devices in a network comprising at least a first device. The method comprises a step of sending at least one message over the network from the first device to a second device, wherein the first device continues the method without acknowledgement of the at least one message from the second device. The method is suitable for execution on clockless devices. A device for performing the method is also claimed.
Claims4
A method of associating a first device with a second device, the first device storing an identity of the second device and the second device storing an identity of the first device, the method comprising the steps of:
- receiving by the first device instructions to associate with the second device;
- sending by the first device a certificate for the second device generated by the first device to the second device;
- storing by the first device an indication that it may associate with the second device;
- if the second device does not store an indication that it may associate with the first device, discarding by the second device the certificate for the first device;
- requesting by the first device from the second device a certificate for the first device generated by the second device;
- if the second device does not store an indication that it may associate with the first device, refusing the request by the second device;
- receiving by the second device instructions to associate with the first device;
- storing by the second device an indication that it may associate with the first device;
- sending by the second device to the first device the certificate for the first device generated by the second device;
- storing by the first device the certificate for the first device generated by the second device;
- requesting by the second device from the first device a certificate for the second device generated by the first device;
- sending by the first device to the second device the certificate for the second device generated by the first device;
- and
- storing by the second device the certificate for the second device generated by the first device.
A method of associating a first device with a second device, the first device storing an identity of the second device and the second device storing an identity of the first device, the method comprising, at the first device, the steps of:
- receiving instructions to associate with the second device;
- sending a certificate for the second device generated by the first device to the second device;
- storing an indication that it may associate with the second device;
- requesting from the second device a certificate for the first device generated by the second device;
- receiving from the second device the certificate for the first device generated by the second device;
- storing the certificate for the first device generated by the second device;
- receiving a request from the second device for the certificate for the second device generated by the first device;
- and
- sending to the second device the certificate for the second device generated by the first device.
A method of associating a first device with a second device, the first device storing an identity of the second device and the second device storing an identity of the first device, the method comprising, at the second device, the steps of:
- receiving a certificate for the second device generated by the first device;
- if the second device does not store an indication that it may associate with the first device, discarding the certificate for the second device generated by the first device;
- receiving a request from the first device for the certificate for the first device generated by the second device;
- if the second device does not store an indication that it may associate with the first device, refusing the request;
- receiving instructions to associate with the first device;
- storing an indication that it may associate with the first device;
- sending to the first device the certificate for the first device generated by the second device;
- requesting from the first device a certificate for the second device generated by the first device;
- receiving from the first device the certificate for the second device generated by the first device;
- and
- storing the certificate for the second device generated by the first device.
A first device adapted to associate with a second device, the first device storing an identity of the second device, the first device comprising:
- means for receiving instructions to associate with the second device;
- means for communication adapted to:
- send a certificate for the second device generated by the first device to the second device;
- send a request to the second device for a certificate for the first device generated by the second device;
- receive from the second device the certificate for the first device generated by the second device;
- receive a request from the second device for the certificate for the second device generated by the first device;
- send to the second device the certificate for the second device generated by the first device;
- memory means adapted to store:
- an indication that it may associate with the second device, upon reception by the receiving means instructions to associate with the second device;
- store the certificate for the first device generated by the second device;
- and
- means for processing adapted to, if it does not store an indication that it may associate with the second device, discard any message from the second device and refuse any request from the second device.
Dependencies are inferred from the claim text.