Itron Gmbh

Isaiah Michael Weber

Bret Gregory Holmdahl

A metrology device may include a processor and a non-transitory computer-readable media storing instructions that, when executed by the processor, cause the processor to perform operations. The operations may include generating a challenge message, the challenge message including a challenge; issuing the challenge message in a scannable undirected advertising message; receiving from the field tool a response solution to the challenge message, the response solution being calculated based at least in part on the challenge and a challenge key associated with the challenge, and verifying the response solution based at least in part on a secure hash algorithm (SHA). The challenge key may include a fixed value specific to a manufacturer of the metrology device and known to the field tool and the metrology device.

Bluetooth low energy (BLE) advertising packet security

Secure pairing of computing devices, such as a field tool and a battery-powered device (BPD), may include generating by the BPD a challenge message including a randomly-generated challenge, and receiving at the field tool a challenge message from the BPD via a Bluetooth low-energy (BLE) advertisement message. The challenge message can include a randomly-generated challenge and can be issued in a scannable undirected advertising message. The challenge key can be calculated via a secure hash algorithm (SHA) to obtain a response solution. The response solution can be sent by the field tool to the advertising device in response to the challenge message. The response solution can be verified by the BPD using a cryptographic message authentication code such as an HMAC, and the BPD sends a confirmation message to the field tool indicating that the response solution is verified as correct.

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Spokane, WA, United States of America

Isaiah Michael Weber