Related · tier-1 reading. For how to migrate before the NIST deadline and stay verifiable, see Post-Quantum.
Every authentication system built on RSA, ECDSA, or classical Diffie-Hellman will be broken by quantum computers. H33 provides quantum-safe authentication today: ML-DSA signatures, FHE biometric matching, and three-family attestation that remains secure regardless of quantum progress.
Authentication is the gatekeeper. Every system, every API, every application begins with authentication. If the authentication layer is compromised, everything behind it is exposed. Quantum computers will break the cryptographic foundations of current authentication systems: RSA signatures that verify certificates, ECDSA signatures that authenticate API requests, ECDH key exchanges that establish secure sessions.
The harvest-now-decrypt-later threat makes authentication credentials especially valuable. An adversary who captures authentication traffic today can replay or forge credentials once quantum decryption is available. Session tokens, JWT signatures, certificate chains, and SAML assertions signed with quantum-vulnerable algorithms are all targets.
H33 uses ML-DSA-65 (FIPS 204) for all authentication signatures. ML-DSA is a lattice-based signature scheme that is resistant to both classical and quantum attacks. It provides 128 bits of post-quantum security with signature generation under 1 millisecond and verification under 0.5 milliseconds.
In the H33 authentication flow, every authentication event produces an ML-DSA-signed attestation. The attestation binds the authentication result (success or failure) to the user identity, the timestamp, the authentication method, and the system context. This attestation is independently verifiable and tamper-evident.
For biometric authentication, H33 uses BFV fully homomorphic encryption to compare biometric templates entirely in the encrypted domain. The matching server never sees plaintext biometric data. The enrollment template and the authentication template remain encrypted throughout the comparison process.
The FHE biometric matching pipeline processes 1.6 million authentications per second on Graviton4 hardware, with a per-authentication latency of 42 microseconds. This performance exceeds many plaintext biometric matching systems while providing zero-plaintext-exposure privacy guarantees.
| Metric | Value |
|---|---|
| Sustained throughput | 1,667,875 auth/sec |
| Per-authentication latency | 42 microseconds |
| FHE batch (32 users) | 943 microseconds |
| Attestation overhead | 391 microseconds |
| ZKP verification | 0.358 microseconds |
Every authentication event in the H33 system produces a 74-byte post-quantum attestation (H33-74) signed with three independent signature families. This attestation survives the failure of any single post-quantum algorithm because it requires breaking three independent mathematical problems simultaneously.
The attestation chain provides a complete, auditable history of authentication events. Each attestation is timestamped, signed with PQ signatures, and anchored to an immutable record. The history is available for compliance audits, forensic investigations, and insurance claims.
Deploy the H33 Gateway in front of your existing authentication system. The gateway adds post-quantum attestation to every authentication event without modifying your existing auth flow. Your IdP, OAuth server, or SAML provider continues to operate unchanged.
Replace classical JWT signatures with hybrid signatures that include both classical (RS256/ES256) and post-quantum (ML-DSA) components. Clients that can verify PQ signatures get quantum-safe tokens. Legacy clients continue to verify the classical component.
Migrate to native post-quantum authentication using ML-DSA-signed tokens and ML-KEM session establishment. Deprecate classical-only authentication paths. Enable continuous PQ attestation through HATS.
Authentication is not a one-time event. Sessions persist, tokens are refreshed, and trust must be continuously verified. H33's HATS continuous attestation monitors authentication controls in real time, producing verified records of MFA enforcement, session integrity, and credential hygiene. This continuous record replaces self-reported compliance attestations with machine-verifiable proof.
Deploy post-quantum authentication without rebuilding your identity infrastructure.