Zero-Knowledge Proofs

Foundation for Defense of Democracies | Georgianna Shea

Zero-knowledge proofs offer United States critical infrastructure operators a cryptographic capability to prove system vulnerabilities to federal agencies without transmitting sensitive underlying scan logs, asset inventories, or configuration details. Demonstrated in a pilot by FDD’s Transformative Cyber Innovation Lab and web3 firm VIA across three oil and natural gas companies analyzing 38 known vulnerabilities, local cryptographic proof objects enabled sector-wide risk aggregation while completely eliminating raw data exposure risks.

Structural barriers historically crippled federal information-sharing frameworks like CISA and ISACs because operators feared shared scan data could trigger regulatory penalties from NERC or leak in breach incidents. By replacing raw data transfer with kilobyte-sized mathematical certificates, national observatories can detect shared software dependencies — such as those exploited in the SolarWinds, Colonial Pipeline, and Log4j incidents — without subjecting private entities to legal liability. To operationalize this architecture, CISA, NERC, and NIST must establish technical rules and execute formal regulatory compliance pilots.

Comment

Cryptographic attestation via zero-knowledge proofs alters the operational trust model established under CISA’s Automated Indicator Sharing mechanism by shifting validation from centralised data inspection to edge-computation integrity. While this mathematical isolation protects sensitive network telemetry, it transfers systemic vulnerability to the underlying zero-knowledge circuit compilers and local prover code. An operator utilising corrupted local audit tools can produce a mathematically valid proof object that attests to a false state of vulnerability mitigation, effectively concealing unpatched exposure behind valid credentials.

This architectural pivot creates a novel verification bottleneck for compliance mandates like NERC CIP-007. Security observatories lose the ability to independently audit raw scan logs, rendering regulatory oversight entirely dependent on the formal verification of the prover software itself. Consequently, threat actors targeting electric utilities can focus on compromising local prover circuits to fabricate compliance for NERC CIP-007 rather than intercepting operational telemetry.

Strategic Question for Discussion

Which presents the greater long-term risk to critical infrastructure resilience under a zero-knowledge regime — the unseen logic flaws within local prover circuits or the inability of federal observatories to audit raw telemetry when verifying NERC CIP-007 compliance?

The trajectory indicates that local prover circuit manipulation poses the more severe systemic threat because a single compromised circuit compiler can silently invalidate attestations across multiple utilities. While losing access to raw telemetry restricts CISA's direct oversight, federal observatories can mitigate this boundary through open-source circuit audits and standardized cryptographic primitives. Conversely, undetected tampering at the local prover layer allows threat actors to mask persistent operational vulnerabilities while maintaining full regulatory compliance under NERC CIP-007.

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