Security - Using RustiQ IOT

Using RustiQ Iot stack, security relies on the standard IoT device architecture, implementing a layered security approach that aligns with industry best practices:

Security Organization

Layer	Stakeholder	Security Responsibilities	Implementation Details
Hardware	PCB Designer / Manufacturer	- Hardware Root of Trust - Secure Storage - Cryptographic Hardware - Physical Security	- Secure Elements - TPM Integration - Secure Boot ROM - Hardware Crypto Engines - Anti-tampering Measures
BSP	BSP Provider	- Secure Boot Chain - Hardened Linux OS - System Encryption - Boot Loader Security	- Verified Boot Process - SELinux/AppArmor - Disk Encryption - Secure Bootloader - Kernel Hardening
Application	RustiQ IOT	- Process Isolation - Authentication - Communication Encryption - Access Control - Secure Updates	- Service Sandboxing - TLS/SSL Implementation - Role-Based Access - Secure API - OTA Update Security

Layer Interactions

        graph TB
    subgraph "Hardware Layer"
        HSM[Hardware Security Module]
        SecureBoot[Secure Boot ROM]
        CryptoEngine[Crypto Engine]
    end

    subgraph "BSP Layer"
        Bootloader[Secure Bootloader]
        Kernel[Hardened Kernel]
        SystemEnc[System Encryption]
    end

    subgraph "Application Layer"
        ProcessIsolation[Process Isolation]
        Auth[Authentication]
        TLS[TLS/SSL]
        Updates[Secure Updates]
    end

    %% Hardware to BSP
    HSM -->|Hardware Root of Trust| Bootloader
    SecureBoot -->|Verified Boot| Bootloader
    CryptoEngine -->|Hardware Crypto| SystemEnc

    %% BSP to Application
    Bootloader -->|Secure Chain| Kernel
    Kernel -->|System Security| ProcessIsolation
    SystemEnc -->|Data Protection| TLS

    %% Styling
    classDef hardware fill:#ff9999,stroke:#ff0000,stroke-width:2px
    classDef bsp fill:#99ff99,stroke:#00ff00,stroke-width:2px
    classDef app fill:#9999ff,stroke:#0000ff,stroke-width:2px

    class HSM,SecureBoot,CryptoEngine hardware
    class Bootloader,Kernel,SystemEnc bsp
    class ProcessIsolation,Auth,TLS,Updates app
    

Security Chain of Trust

1. Hardware Level

   • Provides the foundation of trust

   • Implements physical security measures

   • Enables secure cryptographic operations

   • Manages secure storage

2. BSP Level

   • Builds on hardware security

   • Implements secure boot chain

   • Provides hardened operating system

   • Manages system-level encryption

3. Application Level

   • Implements process isolation

   • Manages authentication and authorization

   • Handles secure communications

   • Controls access to system resources

Security Layers

1. Board Support Package (BSP) Security

• Hardware Root of Trust

• Secure Boot implementation

• Hardware Security Module (when available)

• Secure storage for credentials

• Hardware-based cryptographic operations

2. Operating System Security

• Linux security features (SELinux, AppArmor)

• Process isolation

• File system security

• Network security (firewall, packet filtering)

• System hardening

3. Application Security

• Secure communication (TLS/SSL)

• Authentication and Authorization

• Secure update mechanism

• Process supervision and monitoring

• Secure API endpoints

Security Implementation

        graph TB
    subgraph "BSP Security Layer"
        SecureBoot[Secure Boot]
        HSM[Hardware Security]
        Crypto[Crypto Engine]
        SecureStorage[Secure Storage]
    end

    subgraph "OS Security Layer"
        SELinux[SELinux/AppArmor]
        ProcessIsolation[Process Isolation]
        FileSystem[File System Security]
        NetworkSec[Network Security]
    end

    subgraph "Application Security Layer"
        TLS[TLS/SSL]
        Auth[Authentication]
        Updates[Secure Updates]
        API[Secure API]
        Supervisor[Process Supervisor]
    end

    %% BSP to OS connections
    SecureBoot -->|Verified Boot| SELinux
    HSM -->|Hardware Security| ProcessIsolation
    Crypto -->|Cryptographic Operations| TLS
    SecureStorage -->|Credential Storage| Auth

    %% OS to Application connections
    SELinux -->|Access Control| API
    ProcessIsolation -->|Isolation| Supervisor
    FileSystem -->|Secure Storage| Updates
    NetworkSec -->|Network Protection| TLS

    %% Styling
    classDef bsp fill:#ff9999,stroke:#ff0000,stroke-width:2px
    classDef os fill:#99ff99,stroke:#00ff00,stroke-width:2px
    classDef app fill:#9999ff,stroke:#0000ff,stroke-width:2px

    class SecureBoot,HSM,Crypto,SecureStorage bsp
    class SELinux,ProcessIsolation,FileSystem,NetworkSec os
    class TLS,Auth,Updates,API,Supervisor app
    

Security Features

BSP Level

• Secure boot chain verification

• Hardware-based cryptographic operations

• Secure storage for sensitive data

• Hardware security module integration

• Trusted Platform Module (TPM) support

OS Level

• Mandatory Access Control (MAC)

• Process isolation and sandboxing

• Secure file system permissions

• Network security policies

• System hardening measures

Application Level

• TLS 1.3 for all communications

• Role-based access control

• Secure over-the-air updates

• Process supervision and monitoring

• Secure API with authentication

• Regular security audits

Security Best Practices

1. Regular Updates

   • Secure update mechanism

   • Version control and rollback capability

   • Update verification and signing

2. Access Control

   • Role-based access control

   • Principle of least privilege

   • Secure authentication methods

3. Monitoring and Logging

   • Security event logging

   • System health monitoring

   • Anomaly detection

4. Network Security

   • Encrypted communications

   • Network isolation

   • Firewall rules

   • Secure protocols (MQTT over TLS, HTTPS)

5. Data Protection

   • Data encryption at rest

   • Secure data transmission

   • Secure storage practices