LINE 3 — GOVERNANCE & SECURITY Framework — Draft

Zero-Trust, Consent-Aware Governance Framework for Secure Health Information Exchange

A security and governance architecture combining zero-trust principles, consent-aware data governance, attribute-based access control, audit integrity mechanisms, and privacy-preserving research access for interoperable healthcare data exchange.

Overview

The Secure HIE Governance Framework is a security and governance architecture designed to enable trusted health information exchange across distributed healthcare environments.

The framework combines zero-trust security principles, consent-aware data governance, attribute-based access control, audit integrity mechanisms, and privacy-preserving research access workflows to support secure exchange of interoperable healthcare data.

Built upon healthcare interoperability standards including HL7 FHIR, the framework addresses critical challenges in modern Health Information Exchange (HIE), including identity verification, authorization management, consent enforcement, auditability, and privacy protection.

Technical Contribution

The framework introduces a multi-layer governance model integrating:

1

Identity-Aware Authentication

OIDC-based authentication with clinical role verification and identity governance

2

Purpose-Based Authorization

Attribute-based access control with XACML 3.0 policy engine and deny-by-default enforcement

3

Consent Lifecycle Management

FHIR Consent R4-based authorization lifecycle with revocation propagation

4

Immutable Audit Lineage

FHIR AuditEvent with Merkle-tree integrity chaining for tamper-evident audit trails

5

Privacy-Preserving Federated Access

Federated query with differential privacy and minimum cohort suppression for research access

Secure HIE Governance Architecture

Healthcare Data Exchange
Hospitals / Research / Payers
↓
Identity Governance Layer
OIDC Authentication · Clinical Role Verification
↓
Authorization Governance
ABAC Policy Engine · XACML 3.0 · Deny-by-Default
↓
Consent Management Layer
FHIR Consent R4 · Revocation Propagation
↓
Audit & Trust Layer
FHIR AuditEvent · Merkle Integrity Chain
↓
Privacy-Preserving Analytics
Federated Query · Differential Privacy

Governance Model

Layer 1: Identity Governance

OIDC authentication · Clinical identity verification · Role validation

Layer 2: Authorization Governance

ABAC (Attribute-Based Access Control) · XACML 3.0 · Deny-by-default policy · Access governed by: user role, clinical purpose, data sensitivity, context

Layer 3: Consent Governance

FHIR Consent R4 · Patient authorization · Consent lifecycle · Revocation propagation

Layer 4: Audit Governance

FHIR AuditEvent · Merkle-tree audit chaining · Traceability · Integrity · Accountability

Layer 5: Privacy-Preserving Research Access

Federated query · Differential privacy · Minimum cohort suppression

Completed Deliverables

✓
Secure HIE Governance Methodology
Zero-trust architecture, consent-aware governance, security workflow design.
✓
Identity and Access Control Model
OIDC authentication integration, ABAC authorization framework, policy enforcement design.
✓
Consent Management Design
FHIR Consent R4-based authorization lifecycle with revocation propagation mechanisms.
✓
Audit Integrity Framework
FHIR AuditEvent schema, Merkle-tree integrity verification, lineage tracking.
✓
Privacy-Preserving Research Access Model
Federated query architecture, differential privacy mechanisms, cohort suppression.

Technical Keywords

Health Information Exchange (HIE)Secure HIEFHIRFHIR ConsentFHIR AuditEventZero Trust ArchitectureConsent ManagementIdentity GovernanceOIDCABACXACMLSecurity GovernancePrivacy-Preserving ComputingDifferential PrivacyFederated QueryHealthcare CybersecurityClinical Data Governance