Related Documentation:

• API Standards - Security headers and CORS policy
• System Design - Security implications of system design
• Operations - Security monitoring and logging requirements

1. Authentication
   • JWT Authentication
   • Required Claims
   • Token Management
   • Security Benefits
2. Data Protection
   • Sensitive Data Handling
   • Onchain Data
3. Access Control
   • Permission Levels
   • Role-Based Access
4. Security Headers
5. CORS Policy
6. Audit Logging
   • Required Logs
   • Log Format
7. Security Monitoring
   • Metrics
   • Alerts

The system uses JWT tokens issued by the DDI platform for both:

• User authentication (staff members)
• Service authentication (machine-to-machine)

{
  "sub": "staff_id_123", // or "service_id_123" for m2m
  "iss": "https://ddi.platform",
  "aud": ["reputation-system"],
  "exp": 1625097600,
  "permissions": ["snapshot:create", "snapshot:execute"],
  "type": "user" // or "service" for m2m
}

• Access tokens expire after 1 hour
• Refresh tokens valid for 30 days
• Rotate refresh tokens on use
• Implement token revocation
• Monitor token usage for suspicious patterns

• Single authentication mechanism for all clients
• Fine-grained permission control via JWT claims
• Token-based rate limiting and monitoring
• Enhanced audit trails with client context
• Defense in depth with token validation

• Encrypt sensitive data at rest
• Use TLS 1.3 for all communications
• Implement request signing for critical operations
• Log security events with proper masking

• Merkle tree for efficient verification
• Zero-knowledge proofs for privacy
• Smart contract access control
• Immutable commitment records

• snapshot:create - Create new snapshots
• snapshot:execute - Run snapshot calculations
• snapshot:commit - Commit results onchain
• snapshot:read - View snapshot data
• score:read - View score data

• Admin: Full access
• Operator: Create and execute snapshots
• Viewer: Read-only access
• Service: Machine-to-machine access

Strict-Transport-Security: max-age=31536000; includeSubDomains
X-Content-Type-Options: nosniff
X-Frame-Options: DENY
X-XSS-Protection: 1; mode=block

Access-Control-Allow-Origin: https://{HOST}
Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS
Access-Control-Allow-Headers: Content-Type, Authorization, X-Request-ID
Access-Control-Max-Age: 86400

• Authentication attempts
• Token usage and revocation
• Snapshot operations
• Onchain commitments
• Score verifications
• Permission changes

{
  "timestamp": "2025-06-01T12:00:00Z",
  "level": "INFO",
  "request_id": "uuid",
  "user_id": "staff_123",
  "action": "snapshot:create",
  "resource_id": "snap_123",
  "ip_address": "1.2.3.4",
  "user_agent": "Mozilla/5.0...",
  "status": "success"
}

• Failed authentication attempts
• Token usage patterns
• Rate limit hits
• Suspicious IP addresses
• Unusual access patterns

• Multiple failed logins
• Unusual token usage
• Rate limit breaches
• Permission changes
• Onchain commitment failures