Ensuring the credibility of devices for global attestation

Abstract

Embodiments disclose systems, methods, and computer program products to perform an operation for adapting a set of devices used to authenticate a client device. The operation generally includes determining a plurality of broker devices available for attesting a location of a client device, and determining, from the available broker devices, a first and second subset of broker devices based on a credibility score determined for each of the available broker devices. The operation also includes attesting the location of the client device based on information received from the first subset of broker devices regarding devices in proximity to each of the broker devices in the first subset. The operation further includes upon determining that a number of responses with the information from at least one of the broker devices in the first subset has reached a threshold, reassigning broker devices in the first and second subsets.