Revocable Gateway-Centric Trust for Consumer Electronics Using Distributed Ledger Technology

Abstract

Consumer electronics increasingly execute integrated sensing–communication–computing–control (ISCCC) loops locally, making trust, revocation, and audit at the moment of action the bottleneck. We propose an architecture that maintains action-time authorization on the household gateway while synchronizing cross-vendor trust state off-path through a permissioned trust registry. Devices do not write to the ledger; instead, the gateway periodically anchors succinct commitments (Merkle roots and policy/model digests). We implement a proof-of-concept registry on an IOTA DLT and evaluate three aspects. First, for off-path anchoring, we show that under microbursts of size-triggered commit batches the ledger time-to-confirmation remains narrow and milestone-dominated (median around 3.9–4.0 s and 95th percentile around 4.2 s at a ∼10 s coordinator cadence), with no sensitivity to burst size. Second, for registry reaction, we observe that revocation reaction time scales predictably with the snapshot cadence plus a few seconds of confirmation and probing delay: tightening the snapshot period from 60 s to 15 s shifts the empirical reaction-time distributions as expected. Third, for partition tolerance, we show that across normal, impaired, offline, and recovery phases, local decision latency remains in the sub-millisecond range (with only a few milliseconds of conservative extra latency when snapshots age) and anchoring resumes within the same 1–5 s confirmation envelope once connectivity returns. Overall, the results confirm that action-time decisions remain within tens-of-milliseconds budgets, while trust synchronization is predictable and tunable. In this setting, snapshot cadences of approximately 10–15 s for “hot” items (keys and ownership) and at least 60 s for “warm/cold” items (recalls and model checkpoints) provide a practical balance between revocation speed and polling cost. The open-source implementation is available at: https://github.com/ farhanajaved/PDL-Trust.