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