[2603.24898] Sovereign AI at the Front Door of Care: A Physically Unidirectional Architecture for Secure Clinical Intelligence

Computer Science > Cryptography and Security arXiv:2603.24898 (cs) [Submitted on 26 Mar 2026] Title:Sovereign AI at the Front Door of Care: A Physically Unidirectional Architecture for Secure Clinical Intelligence Authors:Vasu Srinivasan, Dhriti Vasu View a PDF of the paper titled Sovereign AI at the Front Door of Care: A Physically Unidirectional Architecture for Secure Clinical Intelligence, by Vasu Srinivasan and 1 other authors View PDF HTML (experimental) Abstract:We present a Sovereign AI architecture for clinical triage in which all inference is performed on-device and inbound data is delivered via a physically unidirectional channel, implemented using receive-only broadcast infrastructure or certified hardware data diodes, with no return path to any external network. This design removes the network-mediated attack surface by construction, rather than attempting to secure it through software controls. The system performs conversational symptom intake, integrates device-captured vitals, and produces structured, triage-aligned clinical records at the point of care. We formalize the security properties of receiver-side unidirectionality and show that the architecture is transport-agnostic across broadcast and diode-enforced deployments. We further analyze threat models, enforcement mechanisms, and deployment configurations, demonstrating how physical one-way data flow enables high-assurance operation in both resource-constrained and high-risk environments. This work po...