HIPAA Compliance for Healthcare Apps

HIPAA Compliance for Healthcare Apps

Healthcare applications must implement stringent security measures to protect Protected Health Information (PHI).

// iOS - HIPAA compliance implementation
class HIPAAComplianceFramework {
    
    // HIPAA Security Rule implementation
    class SecurityRuleCompliance {
        
        // Administrative Safeguards
        class AdministrativeSafeguards {
            
            // Access control
            func implementAccessControl() {
                // Unique user identification
                let accessControl = AccessControlManager()
                
                accessControl.configure(
                    requireUniqueUserId: true,
                    automaticLogoff: 15 * 60, // 15 minutes
                    encryptionRequired: true
                )
                
                // Role-based access
                accessControl.defineRoles([
                    Role(
                        name: "physician",
                        permissions: [.readPHI, .writePHI, .prescribe]
                    ),
                    Role(
                        name: "nurse",
                        permissions: [.readPHI, .updateVitals]
                    ),
                    Role(
                        name: "admin",
                        permissions: [.manageUsers, .auditAccess]
                    )
                ])
            }
            
            // Workforce training tracking
            func trackSecurityTraining() {
                let trainingTracker = SecurityTrainingTracker()
                
                trainingTracker.recordTraining(
                    userId: getCurrentUserId(),
                    module: "HIPAA Privacy and Security",
                    completedAt: Date(),
                    score: 95
                )
                
                // Periodic reminders
                trainingTracker.scheduleRefresher(
                    interval: .months(12),
                    modules: ["HIPAA Updates", "Security Best Practices"]
                )
            }
            
            // Audit controls
            func implementAuditControls() {
                let auditLogger = HIPAAAuditLogger()
                
                // Log all PHI access
                PHIAccessMonitor.shared.onAccess = { event in
                    auditLogger.log(
                        AuditEvent(
                            timestamp: Date(),
                            userId: event.userId,
                            patientId: event.patientId,
                            action: event.action,
                            dataAccessed: event.dataTypes,
                            outcome: event.success ? .success : .failure,
                            ipAddress: event.ipAddress
                        )
                    )
                }
                
                // Regular audit reviews
                scheduleAuditReviews()
            }
        }
        
        // Physical Safeguards (for mobile devices)
        class PhysicalSafeguards {
            
            func implementDeviceControls() {
                // Device access controls
                let deviceSecurity = DeviceSecurityManager()
                
                // Require device authentication
                deviceSecurity.requireAuthentication(
                    methods: [.passcode, .biometric],
                    timeout: 30 // seconds
                )
                
                // Remote wipe capability
                deviceSecurity.enableRemoteWipe()
                
                // Device encryption validation
                if !deviceSecurity.isDeviceEncrypted() {
                    showEncryptionRequiredAlert()
                }
            }
            
            // Media controls
            func implementMediaControls() {
                // Prevent screenshots of PHI
                PHIViewController.enableScreenshotPrevention = true
                
                // Disable copy/paste for PHI fields
                PHITextField.disableCopyPaste = true
                
                // Watermark PHI documents
                PHIDocumentRenderer.enableWatermark = true
            }
        }
        
        // Technical Safeguards
        class TechnicalSafeguards {
            
            // Access control
            func implementTechnicalAccessControl() {
                // Automatic logoff
                SessionManager.shared.configure(
                    idleTimeout: 15 * 60,
                    absoluteTimeout: 8 * 60 * 60,
                    warningBefore: 60
                )
                
                // Encryption and decryption
                PHIEncryption.configure(
                    algorithm: .aes256gcm,
                    keyDerivation: .pbkdf2,
                    iterations: 100_000
                )
            }
            
            // Audit logs
            class AuditLogImplementation {
                private let secureLogger = SecureAuditLogger()
                
                func logPHIAccess(
                    userId: String,
                    patientId: String,
                    action: PHIAction,
                    data: [String]
                ) {
                    let entry = AuditLogEntry(
                        id: UUID().uuidString,
                        timestamp: Date(),
                        userId: userId,
                        patientId: patientId,
                        action: action,
                        dataAccessed: data,
                        deviceId: getDeviceIdentifier(),
                        location: getCurrentLocation(),
                        networkInfo: getNetworkInfo()
                    )
                    
                    // Tamper-proof logging
                    secureLogger.log(entry, signed: true)
                }
                
                // 6-year retention per HIPAA
                func configureRetention() {
                    secureLogger.setRetentionPolicy(
                        minimumRetention: .years(6),
                        archiveAfter: .years(1),
                        compressionEnabled: true
                    )
                }
            }
            
            // Integrity controls
            func implementIntegrityControls() {
                // Electronic signature for PHI modifications
                let signatureManager = ElectronicSignatureManager()
                
                PHIDataStore.onModification = { modification in
                    let signature = signatureManager.sign(
                        data: modification.data,
                        userId: modification.userId,
                        timestamp: modification.timestamp
                    )
                    
                    modification.signature = signature
                }
                
                // Verify integrity on access
                PHIDataStore.onAccess = { data in
                    guard signatureManager.verify(data) else {
                        throw HIPAAError.integrityViolation
                    }
                }
            }
            
            // Transmission security
            func implementTransmissionSecurity() {
                // End-to-end encryption for PHI
                NetworkManager.shared.configure(
                    minimumTLSVersion: .v1_3,
                    certificatePinning: true,
                    endToEndEncryption: true
                )
                
                // Secure messaging
                SecureMessaging.configure(
                    encryption: .e2e,
                    authentication: .mutual,
                    integrityCheck: true
                )
            }
        }
    }
    
    // Breach notification procedures
    class BreachNotificationProcedure {
        
        func handlePotentialBreach(_ incident: SecurityIncident) {
            let assessment = assessBreach(incident)
            
            if assessment.isPHIBreach {
                // Immediate containment
                containBreach(incident)
                
                // Risk assessment
                let riskLevel = performRiskAssessment(incident)
                
                if riskLevel > .low {
                    // Notify affected individuals within 60 days
                    scheduleIndividualNotification(
                        affectedUsers: assessment.affectedUsers,
                        deadline: Date().addingTimeInterval(60 * 24 * 60 * 60)
                    )
                    
                    // Notify HHS within 60 days
                    notifyHHS(incident, assessment)
                    
                    if assessment.affectedUsers.count >= 500 {
                        // Media notification required
                        notifyMedia(incident, assessment)
                    }
                }
                
                // Document everything
                documentBreachResponse(incident, assessment, riskLevel)
            }
        }
    }
}