Mechanism
Each transmitting device in the governed mesh computes a dynamic device hash from a plurality of inputs comprising device-specific entropy sources, sensor readings of the device, configuration state of the device, clock state of the device, the content of prior transmissions of the device, and combinations thereof. The hash has the property of gradual evolution across successive transmissions, so that its value reflects the device's operational state over time rather than holding a fixed value. The device attaches the dynamic device hash to each governed mesh message it emits, in the dynamic-device-hash field of the message.
Each receiving device maintains a history store that records the sequence of dynamic device hashes it has received from a transmitting device over a policy-defined window. A trust-slope validator at the receiving device evaluates a newly received dynamic device hash against the sequence already in the history store, computes a trust slope metric representing the consistency of the dynamic-device-hash sequence with genuine operational evolution of the transmitting device, and produces a continuity-validation output. That output is consumed by the composite admissibility evaluator that governs whether the device's observations are admitted.
Because the hash evolves with the device's own state, an impersonating device cannot reproduce a genuine device's continuity merely by replaying a captured value or by holding a stolen static credential. The trust-slope validator detects spoofing and replay through discontinuities in the dynamic-device-hash sequence, regardless of whether the spoofing device possesses a valid static credential, which renders credential theft insufficient to impersonate a genuine device.
Operating Parameters
The trust-slope validator accommodates expected variation in the dynamic-device-hash sequence through a governance-policy-defined continuity tolerance window. The tolerance window defines a range within which dynamic-device-hash evolution is considered consistent with genuine operation, and it is governance-policy-configurable per deployment domain, per device class, and per authority level. This allows a deployment to tighten or loosen the validator according to its own threat model rather than imposing a single fixed setting.
The mechanism accommodates device replacement, device maintenance events, and device state transitions through these policy-defined tolerance windows rather than requiring cryptographic re-enrollment for each such event. It also operates across device-configuration changes: a device that changes signaling frequency, transmit power level, antenna configuration, or sensor configuration maintains identity continuity through device-internal entropy sources that persist across the change, and the tolerance window absorbs the resulting expected variation in the hash sequence.
The trust-slope validator records each continuity-validation event in the receiving device's lineage field, so that the record of admitted devices is part of the device's own governed state. The dynamic device hash is carried in a dedicated message field; in the disclosed message format that field is typically eight to sixteen bytes.
Properties
The continuity-based device identity mechanism is distinguished from prior public-key-infrastructure-based, shared-secret-based, and static-credential-based device identity mechanisms in several respects disclosed in the provisional. First, it does not require enrollment of a device with a central certificate authority prior to operation, which enables deployment of new devices without access to an enrollment server and establishment of device identity in environments without network connectivity. Second, it detects spoofing and replay through discontinuities in the dynamic-device-hash sequence regardless of whether a spoofing device possesses a valid static credential. Third, it does not require storage of long-lived secrets on the device, which reduces the consequences of device compromise. Fourth, it scales to large device populations without scaling of a centralized certificate-authority infrastructure. Fifth, it accommodates device replacement, maintenance, and state transitions through governance-policy-defined tolerance windows rather than requiring re-enrollment for each event.
The mechanism is transport-medium-agnostic. The trust-slope continuity identity mechanism operates identically over any transmission medium capable of carrying the dynamic device hash and the governed mesh message payload to receiving devices. The inventive architecture resides in the continuity-based identity structure, that is, the dynamic-device-hash evolution, the trust-slope validation, the tolerance window, and the absence of public-key-infrastructure enrollment, not in any particular physical-layer transmission medium.
Composition With Mesh Operation
The dynamic device hash composes with the governed mesh's other primitives. Each governed observation carries the authoring device's dynamic device hash alongside its authority credential, spatial reference, and temporal reference, so that the continuity-validation output binds the observation content to the device that produced it. The continuity-validation output produced by the trust-slope validator feeds the composite admissibility evaluator, which decides whether to admit, down-weight, or reject the device's observations.
Because the dynamic device hash is carried in a message field rather than retrieved from external infrastructure, continuity is evaluated from the message itself and the receiver's own history store. This fits the governed mesh's disconnected, intermittently connected operating model, where a receiver may have no path to a central authority at the moment it must decide whether to admit a device's observations.
Disclosure Scope
U.S. Provisional Application No. 64/049,409 discloses the dynamic device hash as the basis for continuity-based device identity in the governed spatial mesh. The provisional describes the trust-slope continuity identity mechanism as extended from a related application of the same inventor and applies it to devices participating in the governed mesh protocol. The disclosure includes (a) computation of the dynamic device hash from device-specific entropy, sensor readings, configuration state, clock state, and prior-transmission content, with gradual evolution across successive transmissions; (b) attachment of the hash to each emitted governed mesh message; (c) a receiver-side history store recording the hash sequence over a policy-defined window; (d) a trust-slope validator that computes a trust slope metric and produces a continuity-validation output; (e) a governance-policy-configurable continuity tolerance window per deployment domain, device class, and authority level; and (f) detection of spoofing and replay through discontinuities in the hash sequence.
The disclosure positions the mechanism as an alternative to static-credential and central-enrollment device identity for environments without reliable connectivity to an enrollment server. The provisional's background notes the limited adoption of existing vehicle-to-everything proposals, including Dedicated Short-Range Communications at 5.9 GHz and Cellular Vehicle-to-Everything, that depend on active network infrastructure. This article describes only what the provisional discloses and does not assert any issued claim or any international or PCT counterpart.
