QuantumAuth SDK

Passwordless authentication powered by AI risk scoring and future-ready cryptography.

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Inspiration

Authentication today is fundamentally broken. Passwords are reused, easily compromised, and heavily dependent on human behavior. With increasing AI-driven cyber attacks and the future threat of quantum computing, traditional authentication systems are no longer sufficient.

We were inspired to build a system that removes passwords entirely and replaces them with a smarter, adaptive, and future-ready approach to identity verification.

What it does

QuantumAuth SDK is a passwordless authentication platform that uses:

  • Cryptographic challenge-response authentication
  • AI-based risk scoring
  • Adaptive access control

Instead of logging in with passwords, users authenticate using cryptographic signatures, while an AI engine evaluates the risk of each login attempt in real time.

How I built it

We designed a modular microservices architecture:

  • Frontend built with Next.js for user interaction
  • SDK built in TypeScript to simplify integration
  • Auth Service built using FastAPI to handle authentication logic
  • AI Risk Engine built as a separate FastAPI service for dynamic scoring

Flow:

  1. User registers with a public key
  2. Server generates a challenge
  3. Client signs the challenge
  4. Backend verifies it
  5. AI engine evaluates risk
  6. System allows, challenges, or denies access

We used modern tooling and a monorepo setup to manage all components efficiently.

What I learned

  • Designing secure authentication flows without relying on passwords
  • Building scalable microservices architecture
  • Integrating AI decision-making into backend systems
  • Handling real-world issues like CORS, deployment, and service communication
  • Creating developer-friendly SDK abstractions

Challenges we ran into

  • Managing cross-origin issues between frontend and backend
  • Handling short-lived challenge expirations during testing
  • Ensuring smooth communication between microservices
  • Debugging real-time authentication flows under time pressure
  • Setting up proper deployment pipelines

Accomplishments that I'm proud of

  • Built a fully working passwordless authentication system
  • Integrated AI-based risk scoring into login flow
  • Created a developer-friendly SDK
  • Designed a clean and modern UI
  • Successfully deployed a full-stack microservices application

What's next

  • Replace mock verification with real cryptographic signatures (Ed25519)
  • Implement post-quantum cryptographic algorithms
  • Add behavioral biometrics for deeper risk analysis
  • Introduce zero-knowledge proof-based authentication
  • Expand into a full SaaS authentication platform

Impact

QuantumAuth represents a shift from:

  • Password-based systems → Cryptographic identity
  • Static security → Adaptive AI-driven security
  • Reactive protection → Intelligent prevention

We believe this approach can significantly improve digital security for users and developers worldwide.tion

What it does

How we built it

Challenges we ran into

Accomplishments that we're proud of

What we learned

What's next for QuantumAuth SDK

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