BASESTONE

QUARDIAN SSO

Single sign-on that makes quantum-entropy-based quantum keys the basis of trust

One authentication grants access to every service — dual quantum key verification delivers the convenience of SSO without giving up security.

Patent No. 10-2791692Dual Quantum Key VerificationSingle Sign-OnQuantum-Entropy-Based Keys

Scattered logins, growing account exposure

Managing a separate account for every service is a burden, and a single leaked account spreads across many services — single sign-on has to solve both at once.

The recurring burden of account management

A different account per service, and users carry the burden

  • · Users must remember a different ID and password for every service
  • · Password reuse is why one leak spreads across every service
Rising authentication security requirements

The more unified the login, the stronger the verification must be

  • · When one authentication grants access to many services, its trustworthiness is critical
  • · Mandatory 2FA expanding across telecom, finance, and public sectors

Convenience and security in single sign-on are no longer separate paths.

Problem → Quardian SSO → Effect, at a glance

WHY NOW
A different account per service, and a recurring management burdenThe more unified the login, the stronger the verification requiredMandatory 2FA expanding across telecom, finance, and public sectors
QUARDIAN SSO
Where trust beginsPatent registered 2025.04Convenience and security together
EFFECT
Where trust begins — unpredictable quantum-entropy-based quantum keysDual verification built on patented technology (No. 10-2791692)Security is strengthened while login convenience stays exactly the same

Is conventional single sign-on really safe?

The more convenient one login becomes, the greater the risk hidden behind it.

Structural risk: single point of failure

Because SSO grants access to many services with one authentication, breaching that single credential exposes every connected service at once.

Reuse of a static session

Most single sign-on systems keep trusting the same session or token after the initial authentication. Without re-verification, a hijacked session is indistinguishable from a legitimate one.

Dual quantum key verification brings convenience and security together

Keep the single login, and add one more layer of quantum key verification behind it.

Quantum RNG

Trust rooted in quantum entropy

  • Unpredictable quantum-entropy-based quantum keys serve as the basis of login trust
  • Randomness from quantum entropy, not a software algorithm
Where trust begins
Patent No. 10-2791692

Dual quantum key verification

  • Step 1: identity confirmed with single sign-on credentials
  • Step 2: re-confirmed with quantum key verification — stronger than conventional authentication
Patent registered 2025.04
Single Sign-On

One login, every service

  • After a single authentication, connected services are accessible without logging in again
  • Security improves while the user experience stays exactly the same
Convenience and security together

How dual verification works

Rather than relying on one credential, we confirm it once more with a quantum key.

Single sign-on request

The user requests initial authentication with their unified account credentials

Dual quantum key verification

A patented quantum-entropy-based algorithm verifies the identity a second time

Unified access granted

Once verified, every connected service is accessible without logging in again

Patent No. 10-2791692Quantum entropyDual VerificationSingle Sign-On

Same attack, different outcome

Rather than depending on one credential, a breach is stopped at the next gate.

Reuse of a stolen password

Conventional

Trying a leaked password across many services succeeds once, exposing every connected service at once

Quardian

Even a breached password is re-checked at the dual quantum key verification step — access is denied without it

Session hijacking

Conventional

A stolen session token alone grants continued access with no re-authentication, making it hard to detect

Quardian

Quantum key verification re-confirms identity at every authentication, so a hijacked session alone cannot pass

Credential theft via phishing

Conventional

Unified login credentials entered on a phishing site are stolen outright, exposing every connected service

Quardian

Stolen credentials alone cannot pass dual quantum key verification, so access is blocked

How it differs from conventional single sign-on

Password-based SSO

Single credential

  • One ID and password grants access to every service
  • A leaked password exposes every connected service
  • The session persists on the initial authentication alone, with no further checks

A single credential is a single point of failure

Quardian SSO

SSO with dual quantum key verification

  • Single sign-on plus dual quantum key verification
  • Even a breached credential is re-checked at the second verification
  • Built on patented technology (No. 10-2791692)

Patent registered 2025.04

SSO with OTP

SSO plus a separate OTP step

  • Adds a separate OTP entry step after login
  • OTP codes can still be stolen or intercepted
  • Every added step costs user convenience

The more security is added, the worse the experience gets

One login. One more verification behind it.

The login flow users see stays the same — quantum key verification happens once more behind the scenes

Single Sign-On

9:41●●●●
Login1/3

Single sign-on request

Login

The user requests initial authentication with unified account credentials

An admin dashboard that sees every login at a glance

Track login events across every connected service in real time and automatically block anomalous attempts.

console.quardian.io/sso
3,482
Logins processed today
9
Attempts auto-blocked
99.97%
Average verification success rate
Connected services
Groupware
Connected
u_402110:41:02Success
u_778810:41:19Blocked (dual_verify_fail)
ERP
Connected
u_209310:41:27Success
Verification policy by service
Conditional policy on/off per connected service
Employee group
Partner group
Anomalous login detectedAccount u_7788 failed verification 3 times in 5 minutes, and an alert was sent to the responsible team.
Account anomaly response
Bulk CSV importForce logout

The figures above are illustrative example data showing the screen's structure.

Enterprise integration on standard protocols, unchanged

Connects to existing systems with no code changes via SAML/OIDC, and syncs users automatically via SCIM.

SAMLOIDCLDAPSCIMREST API

Enterprise-grade reliability for uninterrupted sign-on

Uninterrupted service

Automatic failover keeps the login service running without interruption. A redundant setup removes any single point of failure.

Proven performance

Validated under large-scale concurrent login loads, so it performs reliably regardless of organization size.

Real-time monitoring

Repeated failures and abnormal access patterns are detected before they become incidents, with instant alerts to the responsible team.
Configured to fit each customer's environment, with the optimal architecture designed together during the PoC stage

Dual verification, proven by patent

SSO service authentication system with dual quantum key verification — formally registered with the Korean Intellectual Property Office in April 2025.

Patent certificate for the SSO service authentication system with dual quantum key verification

Patent No. 10-2791692, Registered 2025.04.01, Korean Intellectual Property Office

Dual verification built on quantum technology

The patent covers a dual verification architecture based on quantum technology rather than an algorithmic seed.

Stronger SSO security

Dual verification compensates for the structural weakness inherent in single sign-on.

Stronger than conventional authentication

Security is substantially improved over conventional approaches that depend on a single credential.

Convenience and security together

Security is strengthened while the login experience users feel stays exactly the same.

Quardian SSO at a glance

Quardian SSO product feature diagram

Frequently Asked Questions

Common questions when evaluating Quardian SSO.

After a first-factor login with the unified credential, a patented (Patent No. 10-2791692) quantum-key-based algorithm re-verifies identity as a second factor — a dual-verification structure.

No. After the first authentication, users reach every connected service without logging in again — the experience stays the same while the extra verification happens automatically behind the scenes.

Yes, it supports the SAML/OIDC standards for integration without code changes, and SCIM automatically syncs user accounts.

Even if credentials are stolen, access is denied unless the quantum-key dual verification also passes, so a single credential leak doesn't automatically expose every connected service.

Yes. It was officially registered with the Korean Intellectual Property Office in April 2025 as Patent No. 10-2791692.

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