System and method for initiating a secure communication link based on proximity and functionality of wireless communication devices

摘要

A method for initiating a security relationship by a first communication device, wherein the first device communicates with a number of other communication devices, selects, in dependence on the result of the communicating step, one of the other devices, and initiates the negotiation of a security relationship with that selected device.

主权项

1. A method for initiating a security relationship at a first communication device having a restricted user interface, the method comprising performing the following steps at the first device:
transmitting to other communication devices; receiving communications from a plurality of the other communication devices; determining a received signal strength indicator (RSSI) for each of the plurality of other communication devices; selecting, without user input and in dependence on the result of the said receiving step, one of the other devices; determining a difference between received signal strength indicators of the selected device and least one other communication device; determining whether the selected device supports a profile as required by the first communication device, and, if the required profile is supported and only if the difference is greater than a predetermined threshold: initiating the negotiation of a security relationship with that selected device, wherein a connection is not made to either device if the difference in the RSSI is less than the predetermined threshold.