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UNIFIED_IDENTITY_DESIGN.md

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+# Unified Identity Architecture Design
+
+**Date**: 2025-01-27
+**Purpose**: Design document for unified identity system
+**Status**: Design Document
+
+---
+
+## Executive Summary
+
+This document outlines the design for a unified identity system that provides single sign-on (SSO) and centralized user management across all workspace projects.
+
+---
+
+## Architecture Overview
+
+### Components
+
+1. **Identity Provider** (Keycloak, Auth0, or Entra ID)
+2. **Authentication Service** (Custom or provider)
+3. **User Management Service** (Centralized)
+4. **Authorization Service** (RBAC/ABAC)
+5. **Session Management** (JWT tokens, refresh tokens)
+
+---
+
+## Technology Options
+
+### Option 1: Keycloak (Recommended - Self-Hosted)
+
+**Pros**:
+- Open-source and free
+- Feature-rich
+- Standards-compliant (OAuth2, OIDC, SAML)
+- Self-hosted control
+
+**Cons**:
+- Requires infrastructure
+- More setup complexity
+
+### Option 2: Auth0
+
+**Pros**:
+- Managed service
+- Easy setup
+- Good documentation
+- Enterprise features
+
+**Cons**:
+- Commercial (paid)
+- Vendor lock-in
+
+### Option 3: Microsoft Entra ID
+
+**Pros**:
+- Enterprise integration
+- Azure ecosystem
+- Good security features
+
+**Cons**:
+- Azure dependency
+- Commercial (paid)
+
+**Recommendation**: Keycloak for self-hosted, Auth0 for managed.
+
+---
+
+## Features
+
+### Authentication
+- Single Sign-On (SSO)
+- Multi-factor authentication (MFA)
+- Social login (Google, GitHub, etc.)
+- Passwordless authentication
+
+### Authorization
+- Role-Based Access Control (RBAC)
+- Attribute-Based Access Control (ABAC)
+- Fine-grained permissions
+- Resource-level access control
+
+### User Management
+- Centralized user directory
+- User provisioning
+- Profile management
+- Account lifecycle
+
+---
+
+## Implementation Plan
+
+### Phase 1: Identity Provider Setup (Weeks 1-2)
+- [ ] Deploy Keycloak or configure Auth0
+- [ ] Set up realms/clients
+- [ ] Configure authentication flows
+- [ ] Set up MFA
+
+### Phase 2: User Management (Weeks 3-4)
+- [ ] Create user management service
+- [ ] Implement user provisioning
+- [ ] Set up user directory
+- [ ] Configure user sync
+
+### Phase 3: SSO Implementation (Weeks 5-6)
+- [ ] Implement SSO in projects
+- [ ] Configure OAuth2/OIDC
+- [ ] Test SSO flow
+- [ ] Migrate existing users
+
+### Phase 4: Authorization (Weeks 7-8)
+- [ ] Implement RBAC
+- [ ] Configure permissions
+- [ ] Set up policy engine
+- [ ] Test authorization
+
+---
+
+## Integration Points
+
+### Projects Integration
+- **dbis_core**: Banking system authentication
+- **the_order**: Identity platform integration
+- **Sankofa**: Platform user management
+- **Web apps**: Frontend authentication
+
+### API Integration
+- **API Gateway**: Authentication middleware
+- **Microservices**: JWT validation
+- **GraphQL**: Authentication resolvers
+
+---
+
+## Security Considerations
+
+### Authentication Security
+- Strong password policies
+- MFA enforcement
+- Session management
+- Token security
+
+### Authorization Security
+- Principle of least privilege
+- Regular access reviews
+- Audit logging
+- Permission validation
+
+---
+
+## Migration Strategy
+
+### User Migration
+1. Export users from existing systems
+2. Import to unified system
+3. Map existing roles/permissions
+4. Test authentication
+5. Cutover users
+
+### Application Migration
+1. Add SSO support
+2. Test authentication flow
+3. Migrate users gradually
+4. Deprecate old auth
+5. Complete migration
+
+---
+
+## Monitoring
+
+### Metrics
+- Authentication success/failure rates
+- SSO usage
+- Token refresh rates
+- Permission check performance
+
+### Alerts
+- High authentication failures
+- SSO failures
+- Token expiration issues
+- Permission errors
+
+---
+
+**Last Updated**: 2025-01-27
+