Random MAC Configuring

Abstract

There is provided a method of configuring an Enrollee device for communications in a wireless network. The method comprises, on the Enrollee side, providing a Configurator device, executing a configuration protocol, and sending by the Enrollee device, during an execution of the configuration protocol, an announcement message comprising an indication of a type of a public key previously used by the Enrollee as part of the protocol if an attempt by the Enrollee device to connect to the network has failed following an earlier execution of part of the configuration protocol. There are also provided an Enrollee and Configurator devices arranged to execute the method.

Description

Claims

1. A method of configuring an enrollee device for communications in a wireless network, the method being arranged to be used with a configurator device, the method comprising: executing a configuration protocol, andsending, by the enrollee device, to the configurator device, during an execution of the configuration protocol, an announcement message comprising an indication of a type of a public key previously used by the enrollee device as part of the protocol if an attempt by the enrollee device to connect to the network has failed following an earlier execution of part of the configuration protocol.

2. The method of claim 1, further comprising:, receiving, by the enrollee device, in response to the announcement message, from the configurator device, a response message comprising a public key of the type indicated by the indication of a type of public key and computing a new key based on the received key and sending a further message using the new key.

3. The method of claim 1, wherein the enrollee device is a simple device.

4. The method of claim 1, wherein the announcement message further comprises a hash of a public key previously used by the configurator device.

5. The method of claim 1, wherein the indication comprises a finite cyclic group attribute.

6. An enrollee device arranged to be configured by a configurator device for communication in a wireless network, the enrollee device being arranged to: participate in a configuration protocol, andsend an announcement message to the configurator device if an attempt to connect to the network has failed following an earlier execution of a part of the configuration protocol, the announcement message comprising an indication of a type of a public key previously used by the enrollee device as part of the protocol.

7. The enrollee device of claim 6, wherein the enrollee device is arranged to receive, in response to the announcement message, from the configurator device, a response message comprising a public key of the type indicated by the indication of a type of public key and to computing a new key based on the received key and sending a further message using the new the new key.

8. The enrollee device of claim 6, wherein the enrollee device is a simple device.

9. The enrollee device of claim 6, further configured to include a hash of a public key previously used by the configurator device in the announcement message.

10. The enrollee device of claim 6, configured to include in the indication, a finite cyclic group attribute.

11. A configurator device arranged to configure an enrollee device for communication in a wireless network, the configurator device being arranged to: participate in a configuration protocol;receive, from the enrollee device, an announcement message, the message comprising an indication of a type of a public key previously used by the enrollee device as part of the configuration protocol,to retrieve the indication, andsend, to the enrollee device, a configuration message comprising a key of the same type as the indication.

12. A system comprising an enrollee device according to claim 6.

13. A computer program product when operated on a processor in an enrollee device causes the enrollee device to execute the method of claim 1.