The First Direct-to-Consumer Quantum-Safe Document Signing Engine
Post-quantum cryptography has been locked behind enterprise contracts and developer APIs. Until now. Clustrauth™ powers Smart Banner Hub's document authentication—making quantum-safe signatures accessible to everyone through a simple checkout button, not a sales call.
Enterprise post-quantum vs. Clustrauth™
NIST FIPS 204 post-quantum signature algorithm
Classical elliptic curve digital signature
Quantum-resistant cryptographic hash
Protected against future quantum computers
Authentication, not signatures — cryptographic proof of document integrity
Cryptographic proof that the file has not been altered. Any change — even a single byte — invalidates the authentication.
Verifiable record of exactly when the document was authenticated. Anchored with trusted timestamp authority for evidentiary use.
Complete verification history showing every check performed. Designed for legal, compliance, and regulatory requirements.
Instant, deterministic detection of document modification. Pass or fail — no ambiguity, no false positives.
Important distinction: Clustrauth™ provides document authentication — proving a file's integrity and provenance. This is different from e-signature services (like DocuSign) that collect human consent. Clustrauth™ answers "Is this the exact document that was authenticated?" not "Did someone agree to terms?"
Products built on our post-quantum authentication engine
No enterprise contract. No API keys. No waiting. Just protection.