# NimPak Security and Verification System ## Overview The NimPak Security and Verification System provides military-grade package integrity monitoring, provenance tracking, and trust management for NexusOS. This comprehensive system ensures package authenticity, maintains audit trails, and enforces security policies throughout the package lifecycle. ## Architecture The security system consists of several interconnected components: ``` ┌─────────────────────────────────────────────────────────────┐ │ NimPak Security System │ ├─────────────────────────────────────────────────────────────┤ │ ┌─────────────────┐ ┌─────────────────┐ ┌──────────────┐ │ │ │ Integrity │ │ Provenance │ │ Trust Policy │ │ │ │ Monitor │ │ Tracker │ │ Manager │ │ │ │ │ │ │ │ │ │ │ │ • Hash Verify │ │ • Chain Track │ │ • Reputation │ │ │ │ • Signature │ │ • Trust Score │ │ • Policies │ │ │ │ • Real-time │ │ • Audit Trail │ │ • Enforcement│ │ │ │ • Health Checks │ │ • Verification │ │ • Community │ │ │ └─────────────────┘ └─────────────────┘ └──────────────┘ │ ├─────────────────────────────────────────────────────────────┤ │ ┌─────────────────┐ ┌─────────────────┐ ┌──────────────┐ │ │ │ Hash Verifier │ │ Signature │ │ Keyring │ │ │ │ │ │ Verifier │ │ Manager │ │ │ │ • BLAKE2b/3 │ │ • Ed25519 │ │ • Key Store │ │ │ │ • Streaming │ │ • Dilithium │ │ • Revocation │ │ │ │ • Batch Verify │ │ • Hybrid Sigs │ │ • Trust Web │ │ │ └─────────────────┘ └─────────────────┘ └──────────────┘ │ ├─────────────────────────────────────────────────────────────┤ │ ┌─────────────────┐ ┌─────────────────┐ ┌──────────────┐ │ │ │ Event Logger │ │ Periodic │ │ CLI Commands │ │ │ │ │ │ Scanner │ │ │ │ │ │ • Audit Trail │ │ • Scheduled │ │ • nip verify │ │ │ │ • Security Log │ │ • Incremental │ │ • nip doctor │ │ │ │ • Compliance │ │ • Full Scans │ │ • nip track │ │ │ └─────────────────┘ └─────────────────┘ └──────────────┘ │ └─────────────────────────────────────────────────────────────┘ ``` ## Core Components ### 1. Integrity Monitor (`integrity_monitor.nim`) The Integrity Monitor provides comprehensive package integrity verification and real-time monitoring. **Key Features:** - **Hash Verification**: BLAKE2b/BLAKE3 streaming hash verification for packages of any size - **Signature Verification**: Ed25519 digital signature verification with post-quantum hooks - **Real-time Monitoring**: Filesystem watcher for immediate tamper detection - **Health Check Integration**: Pluggable health checks with the framework - **Quarantine System**: Automatic quarantine of corrupted files - **Alert Management**: Comprehensive alerting with severity levels **Usage:** ```bash # Verify all packages nip verify --all # Verify specific package with auto-repair nip verify htop --auto-repair # Run integrity health check nip doctor --integrity # Start real-time monitoring nip verify --all --watch ``` ### 2. Provenance Tracker (`provenance_tracker.nim`) The Provenance Tracker maintains complete package source attribution with cryptographic proof. **Key Features:** - **Complete Chain Tracking**: From source to installation with cryptographic proof - **Trust Score Calculation**: Multi-factor trust scoring based on provenance quality - **Chain Verification**: Cryptographic verification of provenance steps - **Graft Preservation**: Maintains provenance during external package grafting - **Audit Trail Integration**: Complete audit trails for compliance **Provenance Chain Structure:** ```nim ProvenanceChain: - packageId: string - version: string - source: ProvenanceSource (original, grafted, converted, rebuilt, mirrored) - steps: seq[ProvenanceStep] - trustScore: float (0.0-1.0) - verificationErrors: seq[string] ``` **Usage:** ```bash # Track package provenance nip track htop # Show detailed trust scoring nip track htop --trust-score # Show verification details nip track htop --verification # Output structured data nip track htop --output json ``` ### 3. Trust Policy Manager (`trust_policy.nim`) The Trust Policy Manager enforces security policies and manages community reputation. **Key Features:** - **Policy-Based Security**: Configurable trust policies with rule-based evaluation - **Community Reputation**: Actor reputation system with verification history - **Dynamic Trust Scoring**: Multi-factor trust calculation with community input - **Policy Enforcement**: Automatic policy enforcement during package operations - **Reputation Tracking**: Long-term reputation tracking for package maintainers **Trust Policy Rules:** ```nim TrustPolicyRule: - condition: "trust_score >= 0.8" - action: "allow" | "deny" | "warn" | "require_approval" - priority: int ``` **Usage:** ```bash # List available trust policies nip trust policy list # Set active trust policy nip trust policy set strict # Show community actors nip trust actor list # Show actor details nip trust actor show nexusos-build-farm ``` ### 4. Periodic Scanner (`periodic_scanner.nim`) The Periodic Scanner provides automated integrity scanning with configurable scheduling. **Key Features:** - **Scheduled Scanning**: Configurable full and incremental scans - **Scan Types**: Full system, incremental (recent changes), and targeted scans - **Performance Optimization**: Efficient scanning with minimal system impact - **Scan History**: Complete scan history with statistics and reporting - **Integration**: Seamless integration with integrity monitoring **Usage:** ```bash # Manual full scan nip scan full # Manual incremental scan nip scan incremental # Targeted scan of specific packages nip scan targeted htop vim git # Show scan statistics nip scan status # Show scan history nip scan history ``` ## CLI Commands ### `nip verify` - Package Verification Comprehensive package integrity verification with multiple options. ```bash # Basic usage nip verify [options] # Options --no-signatures # Skip signature verification --no-hashes # Skip hash verification --signatures-only # Only verify signatures --hashes-only # Only verify hashes --verbose, -v # Verbose output --details # Show detailed verification info --auto-repair # Attempt automatic repair --watch # Enable real-time monitoring --periodic # Enable periodic scanning --output # Output format (json, yaml, kdl) # Examples nip verify --all --verbose nip verify htop --auto-repair nip verify --all --watch --periodic ``` ### `nip doctor --integrity` - Health Checks System integrity health checks with comprehensive reporting. ```bash # Basic usage nip doctor --integrity [options] # Options --auto-repair # Attempt automatic repair --verbose, -v # Verbose output --no-recommendations # Hide repair recommendations --output # Output format (json, yaml, kdl) # Examples nip doctor --integrity nip doctor --integrity --auto-repair --verbose ``` ### `nip track` - Provenance Tracking Package provenance tracking with trust scoring and verification. ```bash # Basic usage nip track [options] # Options --version # Specific version --trust-score # Show detailed trust scoring --verification # Show verification details --no-steps # Hide individual provenance steps --no-validation # Skip chain validation --verbose, -v # Verbose output --output # Output format (json, yaml, kdl) # Examples nip track htop nip track htop --trust-score --verification nip track htop --output json ``` ### `nip trust` - Trust Policy Management Trust policy and community reputation management. ```bash # Policy management nip trust policy list nip trust policy set nip trust policy show [policy_id] # Actor management nip trust actor list nip trust actor show # Examples nip trust policy list nip trust policy set strict nip trust actor show nexusos-build-farm ``` ### `nip scan` - Manual Scanning Manual integrity scanning with different scope options. ```bash # Scan types nip scan full # Full system scan nip scan incremental # Incremental scan (recent changes) nip scan targeted # Targeted scan # Status and history nip scan status # Show scan statistics nip scan history [limit] # Show scan history # Examples nip scan full nip scan targeted htop vim git nip scan history 10 ``` ## Configuration ### Integrity Monitor Configuration ```kdl integrity { enable_realtime_watcher true scan_interval 3600 // 1 hour watch_paths "/Programs" "/System/Index" "/System/Generations" alert_threshold 5 auto_repair false quarantine_corrupted true } ``` ### Provenance Tracker Configuration ```kdl provenance { enable_tracking true store_location "/var/lib/nimpak/provenance" verification_interval 24 // 24 hours auto_verify_on_install true require_provenance_for_install false } ``` ### Trust Policy Configuration ```kdl trust_policy { enable_policy_enforcement true policy_store_path "/etc/nimpak/trust-policies" reputation_store_path "/var/lib/nimpak/reputation" auto_update_reputation true require_approval_threshold 0.5 } ``` ### Periodic Scanner Configuration ```kdl periodic_scanner { enabled true full_scan_interval 24 // Hours between full scans incremental_interval 15 // Minutes between incremental scans full_scan_hour 2 // Hour of day for full scan (0-23) max_concurrent_scans 2 scan_timeout 3600 // Timeout for individual scans (seconds) } ``` ## Security Features ### Cryptographic Verification - **Hash Algorithms**: BLAKE2b (primary), BLAKE3 (future), SHA256 (legacy) - **Signature Algorithms**: Ed25519 (primary), Dilithium (post-quantum future) - **Hybrid Signatures**: Support for classical + post-quantum signature combinations - **Streaming Verification**: Memory-efficient verification for large packages ### Real-time Monitoring - **Filesystem Watcher**: Real-time monitoring of critical paths - **Tamper Detection**: Immediate detection of unauthorized modifications - **Quarantine System**: Automatic isolation of corrupted files - **Alert Generation**: Comprehensive alerting with severity classification ### Trust Management - **Multi-factor Trust Scoring**: Based on provenance, signatures, reputation, and age - **Community Reputation**: Long-term reputation tracking for package maintainers - **Policy Enforcement**: Configurable trust policies with rule-based evaluation - **Audit Trails**: Complete audit trails for compliance and forensics ## Integration Points ### Health Check Framework The security system integrates with the existing health check framework: ```nim # Register integrity health checks registerIntegrityHealthChecks() # Run all health checks let results = runHealthChecks() # Start health check daemon startHealthCheckDaemon(monitor) ``` ### Security Event Logging All security events are logged for audit and compliance: ```nim # Log security events logGlobalSecurityEvent(EventPackageVerification, SeverityInfo, "nip-verify", "Package verification completed successfully") # Event types EventPackageVerification EventSecurityIncident EventSystemHealthCheck EventFileSystemChange ``` ### Grafting Integration Provenance is preserved during grafting operations: ```nim # Preserve provenance during graft let preservedChain = preserveProvenanceDuringGraft(originalChain, graftedPackageName, graftedVersion, sourceEcosystem) # Preserve provenance during conversion let convertedChain = preserveProvenanceDuringConvert(graftedChain, convertedHash) ``` ## Performance Characteristics ### Hash Verification Performance - **BLAKE2b**: ~1.5 GB/s on modern hardware - **Streaming**: Constant memory usage regardless of file size - **Batch Processing**: Optimized for multiple file verification - **Chunk Size Optimization**: Adaptive chunk sizes for different file sizes ### Monitoring Overhead - **Real-time Monitoring**: <1% CPU overhead - **Periodic Scanning**: Configurable to minimize system impact - **Incremental Scans**: Only check recently modified packages - **Background Processing**: Non-blocking operations with async I/O ### Storage Requirements - **Provenance Data**: ~1KB per package per version - **Scan History**: ~100 bytes per scan result - **Event Logs**: ~200 bytes per security event - **Trust Data**: ~500 bytes per community actor ## Compliance and Auditing ### ACUL Compliance The security system supports ACUL (Auditable Compute Use License) compliance: - **Reproducible Builds**: Verification of build reproducibility - **License Tracking**: License compliance verification - **Audit Trails**: Complete audit trails for all operations - **Signature Requirements**: Configurable signature requirements ### Security Standards - **NIST Guidelines**: Follows NIST cybersecurity framework - **Cryptographic Standards**: Uses approved cryptographic algorithms - **Audit Requirements**: Comprehensive logging for security audits - **Incident Response**: Automated incident detection and response ## Troubleshooting ### Common Issues 1. **Hash Verification Failures** - Check file integrity - Verify expected hash values - Check for file corruption 2. **Signature Verification Failures** - Verify key availability - Check key revocation status - Validate signature format 3. **Trust Policy Violations** - Review active trust policy - Check package trust score - Verify actor reputation 4. **Performance Issues** - Adjust scan intervals - Optimize chunk sizes - Check system resources ### Debug Commands ```bash # Enable verbose logging nip verify --all --verbose # Show detailed trust breakdown nip track --trust-score --verification # Check system health nip doctor --integrity --verbose # Show scan statistics nip scan status ``` ## Future Enhancements ### Post-Quantum Cryptography - **Dilithium Signatures**: Post-quantum signature algorithm support - **Hybrid Signatures**: Classical + post-quantum signature combinations - **Migration Tools**: Smooth transition to post-quantum algorithms ### Advanced Analytics - **Machine Learning**: Anomaly detection using ML algorithms - **Behavioral Analysis**: Package behavior analysis for threat detection - **Predictive Security**: Predictive security threat identification ### Distributed Trust - **Blockchain Integration**: Distributed trust verification - **Consensus Mechanisms**: Multi-party trust consensus - **Decentralized Reputation**: Distributed reputation management --- This comprehensive security and verification system provides NimPak with enterprise-grade security capabilities, ensuring package integrity, maintaining complete audit trails, and enforcing configurable trust policies throughout the package lifecycle.