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A central authentication service that provides login, time-based one-time passwords, and single sign-on for multiple applications using open standards.
Problem Statement
Each application building its own login leads to weak security and many passwords for users to remember.
Objectives
Implement secure password and session handling
Add TOTP and backup codes for two-factor login
Provide single sign-on using OAuth 2.0 and OpenID Connect
Detect suspicious login attempts
Modules
Identity Store
Users, hashed passwords, and device records.
Two-Factor Module
Authenticator app setup, verification, and backup codes.
SSO Provider
Authorization server with client applications.
Security Monitoring
Login history, rate limiting, and alerts.
Expected Output
An auth server with two sample apps where logging in once with two-factor signs the user into both.
Future Scope
Passkeys and biometric login, risk-based authentication, and admin policies.