Intro to Decentralized Authentication Bridge (DAB)
Web3 authentication presents unique challenge security risks, usability friction, and integration complexities with existing backend systems. The Kondux Decentralized Authentication Bridge (DAB) addresses these issues with a secure, scalable authentication solution that connects Web3 wallet-based authentication with traditional backend services.
Why DAB?
Traditional authentication relies on centralized databases and passwords, which are vulnerable to breaches. Web3 authentication eliminates passwords but often lacks compatibility with existing infrastructures. DAB solves both problems, offering:
Nonce-based wallet signature verification eliminates passwords, using cryptographic wallet signatures for authentication.
JWT-based session management secures tokenized user sessions that minimize attack vectors.
Stateless microservice architecture ensures scalability, efficiency, and resilience against failures.
Time-limited secure storage automatically expires nonces and session data, preventing unauthorized reuse.
How DAB Works
DAB’s three microservices streamline authentication while maintaining security.
Wallet Handshake Service
This service generates a one-time UUID-based nonce for user authentication and stores it securely in DynamoDB with a one-hour expiration to prevent replay attacks.
Wallet Signature & JWT Generation
Users sign the nonce via their Web3 wallet. The service verifies the signature, extracts the wallet address, and generates a JWT session token. The nonce is deleted upon successful authentication.
Wallet JWT Verification & User Data Service
The verification service validates JWT tokens before granting access to backend services. It extracts wallet addresses from tokens and retrieves associated user data.
Security at Every Level
One-time-use nonces prevent replay attacks. Environment-based secret key management safeguards cryptographic operations. HS256 JWT signing ensures tamper-proof authentication. Automatic session expiration limits exposure to unauthorized access.
DAB sets a new standard for secure, frictionless authentication, empowering businesses and developers to adopt Web3 without sacrificing security or usability.
What’s next?
Expanded multi-wallet support for broader compatibility across wallet providers.
Multi-factor authentication for added layers of security beyond wallet signatures.
Cross-platform integration for seamless authentication across diverse applications.
DAB bridges Web2 and Web3, delivering a password-free, scalable authentication system designed for decentralized applications. As usability continues to shape blockchain adoption, DAB ensures authentication keeps pace with the user in mind.
