Post-Quantum Authentication Infrastructure
Clustrauth™ is a hybrid post-quantum authentication engine. Authenticate any document with mathematical guarantees — Clustrauth™ computes a SHA3-256 integrity anchor and secures it with NIST-standardized hybrid cryptography for verifiable long-term protection.
⚠ Harvest-Now, Decrypt-Later
Adversaries are already collecting signed documents today, waiting for quantum computers capable of breaking RSA and elliptic curve cryptography. Clustrauth™ provides the cryptographic shield required to defend against retroactive forgery before the threat materializes.
Positioning
Clustrauth™ proves document integrity. E-signature platforms record intent; Clustrauth™ cryptographically ensures the underlying data remains unchanged and quantum-secure.
Traditional E-Signature
Captures identity at a moment in time. Requires vendor-dependent verification. No long-term quantum resistance.
Clustrauth™
SHA3-256 integrity anchor secured with dual algorithms. Any byte-level modification invalidates the proof instantly.
Cryptographic Model
Every authenticated document is secured with two independent algorithms. If either the classical or post-quantum scheme is theoretically compromised, the other maintains document integrity.
Clustrauth™ creates an immutable cryptographic anchor linked to the file's unique hash. Verification re-validates the document against this anchor using our multi-vector authentication engine.
Key Management
Documents are anchored using FIPS 204 compliant key management. The original file remains untouched, while Clustrauth™ secures the cryptographic proof.
SHA3-256 hash computed over the file. This creates a unique cryptographic fingerprint; any byte-level change produces a completely new hash.
The integrity anchor is secured by isolated enterprise-grade Ed25519 and ML-DSA keys. All cryptographic proof is securely managed within our vault.
A Certificate of Authenticity is issued with a unique Certificate ID (SBH-XXXXXXXXXXXX). This ID links the file to its immutable cryptographic proof.
The system re-validates the file against its cryptographic anchor, ensuring the document hash and both dual signatures remain valid.
Verification Lifecycle
The full lifecycle from document submission to third-party verification. Just the file and its Certificate ID are required for validation.
Submit any file up to 50MB. Clustrauth™ anchors the integrity with hybrid cryptography and secures the proof within our infrastructure.
Keep your original file unchanged. Share the Certificate ID alongside it — the ID provides the link back to the document's cryptographic proof.
Any third party validates the file against its Cert ID. Our engine re-checks the integrity anchor and signature validity in real-time.
Enterprise Applications
Any organization that needs to prove document integrity — and requires that proof to survive the quantum era.
Authenticate executed contracts and legal filings. Prove the document a counterparty received is byte-identical to the document you authenticated decades later.
Legal · Finance · Real EstateAuthenticate audit reports and regulatory submissions. Provide verifiable proof of document integrity for HIPAA, SOX, and industry mandates.
Healthcare · Finance · GovernmentAuthenticate research papers, design files, and trade secrets. Establish provable priority with cryptographic evidence that predates disputes.
R&D · Pharma · TechnologyIssue tamper-proof diplomas and training records. Recipients share the file and Certificate ID — verifiers check independently via the Clustrauth™ engine.
Education · HR · Professional ServicesStandards Alignment
Clustrauth™ aligns with published NIST post-quantum migration timelines and implements finalized — not draft — standards.
ML-DSA implementation follows the approved NIST standard for post-quantum digital signatures. The globally recognized baseline for quantum safety.
Hybrid architecture ensures authenticity remains verifiable beyond projected timelines for cryptographically relevant quantum computers.
If either Ed25519 or ML-DSA is theoretically compromised, the other maintains document integrity. Both must fail for a breach.
Clustrauth™ provides cryptographic certainty. Any change to the file produces a different integrity anchor, instantly revealing tampering.
Named among leading post-quantum cryptography innovators alongside Apple, Google, Microsoft, NVIDIA, J.P. Morgan, and Signal.
Pricing
Start with Developer, scale to Business, or contact us for a custom Enterprise contract.
$249/mo
50 signatures included. Fastest path to integration.
$999/mo
250 signatures included. Built for production volume.
Custom
Custom volume, custom rates. Annual contracts available.
Enterprise Onboarding
From initial review to live authentication in your production environment.
Security model walkthrough. Cryptographic audit review. Deployment model selection based on compliance requirements.
API credentials for your testing environment. Authenticate test payloads and validate verification flows end-to-end.
Production environment setup. Key management configuration. SLA finalization and engineering support.
Live production authentication. Real-time monitoring. Priority ongoing support.
Clustrauth™ is the post-quantum authentication engine of Smart Banner Hub LLC · Beaverton, Oregon · USPTO Serial 99562511
Discuss deployment models, volume authentication, and technical integration directly with the founding team.