Implement MFA with SSO for Spring Boot Application

[tsviz]

Goal

Integrate Multi-Factor Authentication (MFA) with Single Sign-On (SSO) for the Spring Boot application.

Steps

1. Choose SSO & MFA Provider

   • Select an identity provider (IdP) that supports SSO and MFA (e.g., Azure AD, Okta, Auth0, Google Identity).
   • Register the application with the IdP.
   • Acceptance: Application is registered and credentials are available.

2. Add Dependencies

   • Add Spring Security and OAuth2/SAML dependencies to pom.xml.
   • Acceptance: Dependencies are present and app builds.

3. Configure Spring Security for SSO

   • Update SecurityConfig to use OAuth2 or SAML.
   • Configure IdP endpoints, client ID, and secret in application.properties.
   • Acceptance: Unauthenticated users are redirected to IdP login and returned after login.

4. Enforce MFA in IdP

   • Configure MFA policies in the IdP.
   • Acceptance: Users must complete MFA during login.

5. Map User Roles/Claims

   • Map IdP user roles/claims to application roles if needed.
   • Acceptance: Roles/claims are available in Spring Security context.

6. Update Login/Logout Flows

   • Remove/disable local login forms.
   • Ensure logout also logs out from IdP.
   • Acceptance: Only SSO login is available; logout is global.

7. Test End-to-End

   • Test login, MFA, logout, and role-based access.
   • Acceptance: All flows work and MFA is always required.

8. Documentation & User Communication

   • Document new login process and support for MFA issues.
   • Acceptance: Documentation is clear and available.

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Acceptance Criteria:

• SSO and MFA are enforced for all users.
• Local login is disabled.
• All authentication/authorization flows are tested and documented.