12 KiB
12 KiB
SMOA Security Architecture
Version: 1.0
Last Updated: 2024-12-20
Status: Draft - In Progress
Classification: Internal Use
Security Overview
Security Objectives
- Protect sensitive data at rest and in transit
- Ensure strong authentication and authorization
- Maintain audit trail for compliance
- Enable secure offline operations
- Support secure inter-agency communications
Security Principles
- Defense in Depth: Multiple layers of security controls
- Least Privilege: Minimum necessary access
- Zero Trust: Verify all access requests
- Security by Design: Security built into architecture
- Continuous Monitoring: Ongoing security monitoring
Threat Model
See Threat Model Document for detailed threat analysis.
Authentication Architecture
Multi-Factor Authentication
SMOA requires three concurrent authentication factors:
-
Knowledge Factor (PIN)
- 6-12 digit numeric PIN
- Complexity requirements enforced
- Retry limits and lockout thresholds
- Hardware-backed storage
-
Biometric Factor (Fingerprint)
- Hardware-backed fingerprint verification
- Secure OS biometric subsystem
- Non-exportable biometric data
- Liveness detection
-
Biometric Factor (Facial Recognition)
- Hardware-backed facial recognition
- Secure OS biometric subsystem
- Non-exportable biometric data
- Anti-spoofing measures
Authentication Flow
User → PIN Entry → Fingerprint Scan → Facial Recognition → Authentication Success
↓
Hardware-Backed Verification
↓
Session Creation
Session Management
- Session Creation: After successful authentication
- Session Timeout: Configurable inactivity timeout
- Session Renewal: Automatic renewal during activity
- Session Lock: Lock on backgrounding, fold state change, security events
- Re-authentication: Required for sensitive operations
Re-authentication Triggers
- Period of inactivity (configurable)
- Device fold state change (policy-defined)
- Security signal detection
- Sensitive operation access:
- Credential display
- Secure communications initiation
- VPN/browser access
- Order creation/modification
- Evidence custody transfer
Authorization Architecture
Role-Based Access Control (RBAC)
Role Hierarchy
- Administrator: Full system access
- Operator: Standard operational access
- Viewer: Read-only access
- Auditor: Audit and reporting access
- Custom Roles: Domain-specific roles (LE, Military, Judicial, Intelligence)
Permission Model
- Module-Level Permissions: Access to entire modules
- Feature-Level Permissions: Access to specific features
- Data-Level Permissions: Access to specific data
- Operation-Level Permissions: Permission to perform operations
Policy Enforcement
- Policy Engine: Centralized policy enforcement
- Dynamic Policies: Policies updated on connectivity
- Offline Policies: Cached policies for offline operation
- Policy Validation: Continuous policy validation
Access Control Points
- Application Entry: Authentication required
- Module Access: Role-based module access
- Feature Access: Feature-level permissions
- Data Access: Data-level permissions
- Operation Access: Operation-level permissions
Cryptographic Architecture
Encryption at Rest
Data Encryption
- Algorithm: AES-256-GCM
- Key Storage: Hardware-backed (Android Keystore)
- Key Management: Automatic key rotation
- Scope: All sensitive data
Database Encryption
- Room Database: Encrypted SQLite
- Encryption Key: Hardware-backed key
- Key Binding: Bound to device and user authentication state
File Encryption
- Sensitive Files: Encrypted file storage
- Key Management: Per-file encryption keys
- Access Control: File-level access control
Encryption in Transit
Transport Layer Security
- Protocol: TLS 1.2 or higher
- Cipher Suites: Strong cipher suites only
- Certificate Pinning: Certificate pinning for critical endpoints
- Mutual Authentication: Mutual TLS where required
VPN Requirements
- Mandatory VPN: Required for browser module
- VPN Configuration: Managed VPN configuration
- VPN Monitoring: VPN connection monitoring
Key Management
Key Storage
- Hardware-Backed: Android Keystore (TEE)
- Key Isolation: Keys isolated per application
- Key Binding: Keys bound to device and user
- Non-Exportable: Keys cannot be exported
Key Lifecycle
- Key Generation: Secure key generation
- Key Rotation: Automatic key rotation
- Key Revocation: Key revocation on security events
- Key Archival: Secure key archival
Key Types
- Data Encryption Keys: For data at rest
- Transport Keys: For data in transit
- Signing Keys: For digital signatures
- Authentication Keys: For authentication
Certificate Management
Certificate Lifecycle
Certificate Installation
- Certificate Sources: Trusted certificate authorities
- Installation Process: Secure installation procedures
- Certificate Validation: Certificate chain validation
- Certificate Storage: Secure certificate storage
Certificate Validation
- Chain Validation: Full certificate chain validation
- Revocation Checking: OCSP/CRL checking
- Expiration Monitoring: Certificate expiration monitoring
- Trust Validation: Trust list validation
Certificate Renewal
- Renewal Process: Automated renewal where possible
- Renewal Notification: Expiration notifications
- Renewal Procedures: Manual renewal procedures
Qualified Certificates (eIDAS)
Qualified Certificate Support
- QTSP Integration: Qualified Trust Service Provider integration
- EU Trust Lists: Validation against EU Trust Lists
- Certificate Validation: Qualified certificate validation
- Certificate Storage: Secure qualified certificate storage
Data Protection
Data Classification
Classification Levels
- Public: Publicly accessible data
- Internal: Internal use only
- Confidential: Confidential data
- Secret: Secret data
- Top Secret: Top secret data
Classification Enforcement
- Classification Labels: Data classification labels
- Access Control: Classification-based access control
- Handling Requirements: Classification-based handling
- Storage Requirements: Classification-based storage
Data Retention
Retention Policies
- Policy Definition: Configurable retention policies
- Automatic Deletion: Automatic deletion per policy
- Retention Periods: Different periods by data type
- Retention Compliance: Compliance with retention requirements
Data Disposal
Secure Deletion
- Secure Erase: Cryptographic secure erase
- Key Destruction: Key destruction on deletion
- Verification: Deletion verification
- Audit Trail: Deletion audit trail
Network Security
Network Architecture
Network Segregation
- Isolated Networks: Network isolation where required
- VPN Tunnels: VPN tunnels for secure communication
- Firewall Rules: Firewall rule enforcement
- Network Monitoring: Network traffic monitoring
Secure Communication
- TLS Encryption: All external communication encrypted
- Certificate Validation: Certificate validation
- Connection Security: Secure connection establishment
- Traffic Analysis: Protection against traffic analysis
Network Controls
Access Controls
- Network Access: Controlled network access
- Endpoint Security: Endpoint security requirements
- Network Policies: Network access policies
- Monitoring: Network access monitoring
Security Controls
Security Control Matrix
| Control Category | Control | Implementation | Status |
|---|---|---|---|
| Access Control | Multi-factor authentication | core:auth | ✅ Implemented |
| Access Control | Role-based access control | core:auth, core:security | ✅ Implemented |
| Access Control | Session management | core:auth | ✅ Implemented |
| Encryption | Data at rest encryption | core:security | ✅ Implemented |
| Encryption | Data in transit encryption | core:security | ✅ Implemented |
| Encryption | Key management | core:security | ✅ Implemented |
| Audit | Audit logging | core:security | ✅ Implemented |
| Audit | Immutable audit records | core:security | ⚠️ Partial |
| Network | TLS enforcement | core:security | ✅ Implemented |
| Network | VPN requirements | modules:browser | ✅ Implemented |
| Certificate | Certificate management | core:certificates | ✅ Implemented |
| Certificate | OCSP/CRL checking | core:certificates | ⚠️ Partial |
Control Effectiveness
- Access Controls: Effective - Multi-factor authentication enforced
- Encryption: Effective - Hardware-backed encryption
- Audit: Effective - Comprehensive audit logging
- Network Security: Effective - TLS and VPN enforcement
- Certificate Management: Effective - Certificate lifecycle management
Security Monitoring
Monitoring Capabilities
Event Monitoring
- Authentication Events: Monitor all authentication attempts
- Authorization Events: Monitor authorization decisions
- Security Events: Monitor security-relevant events
- Anomaly Detection: Detect anomalous behavior
Logging
- Security Logs: Comprehensive security logging
- Audit Logs: Complete audit trail
- Error Logs: Security error logging
- Event Correlation: Event correlation and analysis
Threat Detection
Threat Indicators
- Failed Authentication: Multiple failed authentication attempts
- Unauthorized Access: Unauthorized access attempts
- Anomalous Behavior: Unusual user behavior
- Security Violations: Policy violations
Response Procedures
- Automated Response: Automated threat response
- Alert Generation: Security alert generation
- Incident Escalation: Incident escalation procedures
- Remediation: Threat remediation procedures
Compliance
Security Compliance
Standards Compliance
- eIDAS: Multi-factor authentication, qualified certificates
- ISO 27001: Information security management
- DODI 8500.01: DoD cybersecurity compliance
- CJIS: Criminal justice information security
Compliance Evidence
- Security Controls: Implemented security controls
- Audit Trails: Complete audit trails
- Certifications: Security certifications
- Documentation: Security documentation
Security Best Practices
Development Practices
- Secure Coding: Secure coding practices
- Code Review: Security code review
- Vulnerability Scanning: Regular vulnerability scanning
- Penetration Testing: Regular penetration testing
Operational Practices
- Security Updates: Regular security updates
- Configuration Management: Secure configuration management
- Incident Response: Incident response procedures
- Security Training: Security awareness training
References
Document Owner: Security Architect
Last Updated: 2024-12-20
Status: Draft - In Progress
Classification: Internal Use
Next Review: 2024-12-27