Defending Critical Campus Optical Rings Against Optical Splice and Tapping Attacks

### System Architecture Specification: Defending Critical Campus Optical Rings Against Optical Splice and Tapping Attacks Digital data sovereignty, confidential computing hardware enclaves, and sovereign telecommunications backbones represent the cornerstone of national cyber defense and jurisdictional autonomy. Within **SovereignCAN**, this engineering specification establishes the system architecture, mathematical formulations, and runtime protocols required to deploy resilient, subpoena-immune, and quantum-safe infrastructure at enterprise scale. #### 1. Mathematical Formalization & Jurisdictional Containment Mechanics Consider a sovereign distributed cloud system $\mathcal{SCS}$ formally defined as a tuple: $\mathcal{SCS} = \left\langle \mathcal{D}, \mathcal{K}, \mathcal{P}, \mathcal{J}, \mathcal{T} \right\rangle$ Where: - $\mathcal{D} = \{d_1, d_2, \dots, d_n\}$ denotes the universe of partitioned data records and sovereign objects. - $\mathcal{K}$ represents the hardware-attested cryptographic key management hierarchy (TPM 2.0 / HSM). - $\mathcal{P}: \mathcal{D} \times \mathcal{G} \rightarrow \{0, 1\}$ defines the geopolitical boundary verification function across geographical coordinates $\mathcal{G}$. - $\mathcal{J} \in \{\text{EU}, \text{National}, \text{Sovereign}\} specifies the strict legal jurisdiction governing the enclave. - $\mathcal{T}$ denotes the tamper-evident Merkle tree audit trail recording all cross-boundary transactions. To prevent unauthorized extraterritorial exfiltration (e.g. under the US CLOUD Act or foreign FISA subpoenas), SovereignCAN enforces a strict non-transferability invariant: $\forall d_i \in \mathcal{D}, \quad \text{Jurisdiction}(d_i) = \mathcal{J}_{national} \implies \text{Egress}(\text{Route}(d_i)) \cap \mathcal{G}_{foreign} = \emptyset$ Furthermore, all computational operations occur within memory-encrypted hardware enclaves (AMD SEV-SNP / Intel TDX) where dynamic memory pages are authenticated: $\text{Cipher}(M_t) = \text{AES-XTS-256}(M_t, K_{enclave}), \quad K_{enclave} \notin \text{HostOS}$ Preventing hypervisor introspection, physical memory probing, or cold-boot attacks. #### 2. Network-Layer Isolation & P4 Wire-Speed Enforcement All ingress and egress traffic traversing SovereignCAN conforms strictly to hardware-enforced packet filtering: 1. **eBPF/XDP Line-Rate Inspection**: Packets are validated in kernel-bypass space before memory allocation, eliminating DDoS and spoofing attacks. 2. **IEEE 802.1AE MACsec / Wire-Speed IPsec**: Full 256-bit GCM cryptographic encapsulation at Layer 1/2 with sub-microsecond latency. 3. **Quantum-Safe Key Agreement**: Ephemeral key exchanges utilize NIST FIPS 203 ML-KEM-1024 paired with classical ECDH (X25519) in hybrid mode. #### 3. Formal Non-Interference Invariants & Automated Isolation To guarantee complete isolation between multi-tenant government workloads, SovereignCAN continuously verifies the non-interference property $\mathcal{I}_{iso}$: $\mathcal{I}_{iso}(T_a, T_b) \iff \text{State}(T_a) \perp \text{State}(T_b) \quad \forall t \ge 0$ If any side-channel timing leakage or cache contention exceeds threshold $\tau > 0.05\,\mu\text{s}$, the sovereign hypervisor triggers an automated hardware circuit breaker, isolating the offending tenant within $0.8\,\text{ms}$ and dispatching cryptographic telemetry to the sovereign oversight authority.