US 11,700,527 B2 · Collaborative device address rotation

Abstract

Embodiments are presented for collaborative device address generation between a wireless client device and a network infrastructure component, such as a wireless access point. The wireless client device and network infrastructure component share information to facilitate collaborative generation of a sequence of device addresses. This shared information includes, in some embodiments, key information and moving factor information. The key information and moving factor information is used to generate a token. A sequence of tokens is generated by updating the moving factor as each token is generated. A corresponding sequence of device addresses are then derived based on the sequence of tokens. Since the wireless client device and the network infrastructure device apply equivalent methods to generate respective sequences of addresses, the network infrastructure is able to efficiently identify a source wireless client device when observing a new device address on a wireless network.

Claims20

Dependent claims

A method comprising:

exchanging a first network message with a wireless client device, the first network message indicating parameters to be provided as input to a deterministic computation function and the parameters including moving factor value information for performing a periodic or randomized address rotation for the wireless client device;
generating a sequence of device addresses using the deterministic computation function, each of the device addresses in the sequence generated based on a first of the indicated parameters, and a respective second of the indicated parameters that is unique to the device address;
receiving a sequence of second network messages indicating a corresponding sequence of source addresses;
comparing each of the source addresses in the sequence of source address to at least one device address in the sequence of device addresses;
and
determining, based on the comparing, that each message in the sequence of second network messages originated with the wireless client device.

3 more elements

A non-transitory computer readable storage medium comprising instructions that when executed configure one or more processors to perform operations, comprising:

exchanging a first network message with a wireless client device, the first network message indicating parameters to be provided as input to a deterministic computation function and the parameters including moving factor value information for performing a periodic or randomized address rotation for the wireless client device;
generating a sequence of device addresses using the deterministic computation function, each of the device addresses in the sequence generated based on a first of the indicated parameters, and a respective second of the indicated parameters that is unique to the device address;
receiving a sequence of second network messages indicating a corresponding sequence of source addresses;
comparing each of the source addresses in the sequence of source address to at least one device address in the sequence of device addresses;
and
determining, based on the comparing, that each message in the sequence of second network messages originated with the wireless client device.

3 more elements

Dependencies are inferred from the claim text.

Collaborative device address rotation

Life of this patent

Collaborative device address rotation

Life of this patent

Abstract

Claims20