Identity, signed
for what's next.
Quant0 is an OAuth 2.1 + OIDC identity platform with a quantum-safe signing envelope at its core — supporting OAuth, OIDC, SAML, LDAP, and modern authentication flows.
// signed access token
iss: "auth.quant0.io"
sub: "user_123"
aud: "acme"
token: "hybrid quantum-safe"
Both signatures verified · token accepted
1.8 ms
Trusted by financial, healthcare, and infrastructure operators
Why Now
"Harvest now, decrypt later" is already happening.
Adversaries are recording today's encrypted traffic and storing it. When cryptographically-relevant quantum computers arrive, every classical signature in those archives becomes forgeable. The fix isn't migrating in 2030. It's signing with PQC today, so the past stays trustworthy too.
2016
NIST opens PQC competition
Seven years of submissions, breaks, and finalist selection.
2024
Post-quantum signatures standardized
Post-quantum digital signatures become the federal standard alongside classical ones.
You are here
Hybrid is the right answer
Run hybrid quantum-safe tokens. Get safety from both worlds while PQC matures.
2030+
Q-Day window opens
Tokens you issue today must still be unforgeable on the day a quantum computer can break classical signatures. We have you covered.
The Platform
One identity layer.
Identity isn't a feature — it's a multi-population, multi-protocol, multi-population-attestation problem. Quant0 ships the whole stack: portals for every role, microservices that scale independently, and a single hybrid-signed token at the heart of all of it.
Quantum-safe security
Stay protected today and prepared for tomorrow with quantum-safe security designed to keep your identities, sessions, and data secure for the long term.
Quantum-safe cryptography for future-ready protection
Automatic encryption key rotation
Detects suspicious sessions and blocks unauthorized access
Enterprise-grade protection for users and applications
Flexible organization structure
Manage teams, departments, branches, and business units with a hierarchy that matches how your organization actually works.
Organize unlimited teams and departments
Assign access at any level of your organization
Fine-grained permissions for every team
Fast and secure access checks at scale
Developer-friendly integration
Connect your applications with modern authentication and identity standards, backed by clear documentation.
Supports industry-standard authentication protocols
Customizable login experience to match your brand
Easy user provisioning and seamless application integration
Capabilities
Everything you need.
Nothing you don't.
Build secure authentication, authorization, and identity management with a platform designed to scale—from startups to enterprise organizations.
Universal Login
Deliver a seamless sign-in experience with branded login pages, social sign-in, passkeys, and enterprise SSO.
Flexible organization structure
Model companies, departments, branches, and teams exactly as your organization operates.
Developer-friendly integration
Integrate authentication quickly with modern APIs and clear documentation.
Enterprise Single Sign-On
Enable secure single sign-on across your business applications with support for enterprise identity providers.
Automated user provisioning
Keep users, groups, and permissions synchronized across your identity ecosystem.
Real-time event webhooks
Receive instant notifications for authentication and user events to power your workflows.
Comprehensive audit logs
Track every authentication, access, and administrative action with a complete audit trail.
Secure admin access
Allow authorized administrators to assist users securely while maintaining full accountability.
Partner & multi-tenant management
Manage customers, partners, and organizations from a single identity platform.
Trust Posture
Security
we'd actually trust.
The auditors we work with are picky. We built Quant0 so they can verify everything in minutes — not weeks.
Hybrid post-quantum signing
Every access token, refresh token, and ID token is signed with a hybrid post-quantum + classical envelope — both signatures must verify before a token is accepted.
Append-only audit with hash chain
Every privileged action linked to the previous by SHA-256. One command verifies the whole chain.
Refresh token family revocation
Token replay is detected on the first reuse — the entire family is revoked, sessions terminated, alert raised.
Private keys never leave the vault
All signing material is sealed in a dedicated key management service. Only the token-signing engine has read access.
Trust Center
Key age
Audit events (90d)
38 days
4,218,109
Pricing
Predictable. No per-seat tax.
We bill on monthly active users, not seats. Authentication should get cheaper as you grow, not more expensive.
All plans include hybrid PQC signing, dynamic hierarchies, and webhooks.
Contact
Talk to a human.
Tell us about your stack and what you're trying to do. We'll set up a 30-minute call with an engineer (not a BDR) within a business day.
For partners
For partners
We're actively expanding our channel program. If you resell IAM or help customers migrate to PQC, get in touch — first call within 48 hours.
Tell us what you're building
We reply within one business day. No sales sequence, no nurture emails.