Add advanced RF security research capabilities with comprehensive safety and legal framework

[Copilot]

Implements educational RF security research features for analyzing rolling codes, signal intelligence, and advanced transmission patterns. All features include multiple safety mechanisms, legal disclaimers, and are designed for authorized research only.

Core Modules

• Rolling Code Analyzer - Capture/analyze rolling code sequences, protocol detection (KeeLoq, HCS), entropy analysis, educational demonstrations
• Signal Intelligence - Auto protocol identification, modulation/encoding detection, bit extraction, CRC validation, signal quality metrics
• Advanced Transmission - Frequency sweeping, CW mode, protocol fuzzing, timing/amplitude variations, burst patterns
• RF Research Tools - Educational demonstrations only (disabled by default), no actual harmful functionality

Safety & Legal Framework

• Emergency stop button (GPIO_NUM_0) with immediate transmission halt
• Max transmission duration limits (5s default, configurable)
• Research mode timeout (5 min auto-disable)
• Feature flags for granular control
• Usage logging for audit trail
• Legal disclaimer acceptance required before use
• Prominent warnings throughout UI (red headers, status indicators)

UI Integration

New menu: Advanced Research with submenus for each module. Navigation pattern:

Main Menu → Advanced Research → Legal Warning (accept) → Feature Selection

Added 6 new display screens with warning indicators. Updated main menu to 7 items.

Configuration

// Feature flags in config.h
#define ENABLE_ROLLING_CODE_ANALYSIS 1
#define ENABLE_SIGNAL_INTELLIGENCE 1
#define ENABLE_ADVANCED_TX 1
#define ENABLE_RF_RESEARCH 0  // Disabled by default

// Safety limits
#define MAX_TX_DURATION_MS 5000
#define EMERGENCY_STOP_BUTTON GPIO_NUM_0

Documentation (1,925 lines)

• ADVANCED_FEATURES.md - Complete feature documentation and usage
• ROLLING_CODES.md - Educational guide on rolling code cryptography
• RF_SECURITY.md - Research methodology and responsible disclosure
• LEGAL_DISCLAIMER.md - Comprehensive legal warnings and requirements
• Updated FAQ.md and README.md with advanced features section

Implementation Details

3,466 total lines across 12 new files:

• 4 header files defining clean APIs
• 4 implementation files with safety checks
• 4 comprehensive documentation files

All advanced features check authorization, log usage, respect transmission limits, and can be instantly stopped via emergency button or feature flags.

Example usage:

#if ENABLE_ROLLING_CODE_ANALYSIS
    rollingCodeAnalyzer.captureSequence(signal);
    RollingCodeAnalysis result = rollingCodeAnalyzer.analyzePattern();
    Serial.println(result.analysisReport);
#endif

Educational focus: Features teach why modern RF security works, not how to break it.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• api.registry.nm1.platformio.org
  • Triggering command: /home/REDACTED/.local/bin/platformio platformio run (dns block)
• api.registry.platformio.org
  • Triggering command: /home/REDACTED/.local/bin/platformio platformio run (dns block)
• collector.platformio.org
  • Triggering command: /home/REDACTED/.local/bin/platformio platformio run (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Enhancement Request

Add advanced RF security research capabilities to the LilyGO T-Embed CC1101 firmware for educational and research purposes.

New Features to Implement

1. Rolling Code Analysis Module (src/rolling_code_analyzer.cpp)

Capabilities:

• Capture and log multiple rolling code transmissions
• Statistical analysis of code sequences (pattern detection, entropy analysis)
• KeeLoq protocol identification
• HCS (High-Security) protocol detection
• Sequence prediction research tools
• Counter value extraction
• Manufacturer ID detection

Implementation:

class RollingCodeAnalyzer {
public:
    void captureSequence(uint8_t* data, size_t length);
    void analyzePattern();
    bool detectKeeLoq();
    bool detectHCS();
    uint32_t extractCounter();
    void predictNextCode(); // Educational research
    void exportAnalysis();
};

2. Signal Intelligence Module (src/signal_intelligence.cpp)

Features:

• Protocol auto-identification
• Timing pattern recognition
• Modulation detection (ASK/OOK, FSK, GFSK, MSK)
• Bit extraction and decoding
• Manchester/Differential Manchester decoding
• Preamble/sync word detection
• CRC validation
• Signal quality metrics

3. Advanced Transmission Features (src/advanced_tx.cpp)

Capabilities:

• Frequency sweeping (for testing/research)
• Continuous wave transmission (CW mode)
• Signal injection at precise timing
• Protocol fuzzing (randomized testing)
• Replay with variations (timing, amplitude)
• Multi-burst transmission patterns

Educational Jamming Research (clearly marked as research/illegal without authorization):

// WARNING: Educational purposes only. Illegal without proper authorization.
class RFResearch {
public:
    void sweepJammer(float startFreq, float endFreq); // Frequency sweep
    void cwTransmit(float frequency, uint32_t duration); // Continuous wave
    void pulseJammer(uint32_t onTime, uint32_t offTime); // Pulsed
    // All with prominent warnings in UI
};

4. Enhanced UI Modes

Add new menu options:

• Advanced Analysis mode
• Rolling Code Research submenu
• Signal Intelligence tools
• RF Research section (with legal warnings)

5. Legal/Safety Features

Required additions:

• Prominent warning screens before accessing advanced features
• Legal disclaimer acceptance
• Region/frequency compliance warnings
• Transmission power limits
• Emergency stop functionality
• Logging of advanced feature usage

6. Documentation Updates

New files:

• ADVANCED_FEATURES.md - Complete documentation of research capabilities
• ROLLING_CODES.md - Educational explanation of rolling code systems
• RF_SECURITY.md - RF security research guide
• LEGAL_DISCLAIMER.md - Enhanced legal warnings

Enhanced FAQ.md section:

• "Advanced Research Features" section
• "Responsible Disclosure" guidelines
• "Educational Use Only" disclaimers

7. Configuration Options

Add to config.h:

// Feature flags
#define ENABLE_ROLLING_CODE_ANALYSIS 1
#define ENABLE_SIGNAL_INTELLIGENCE 1
#define ENABLE_ADVANCED_TX 1
#define ENABLE_RF_RESEARCH 0  // Disabled by default, requires user activation

// Safety limits
#define MAX_TX_DURATION_MS 5000
#define EMERGENCY_STOP_BUTTON GPIO_NUM_0

Implementation Requirements

1. All advanced features clearly marked as educational/research
2. Prominent legal warnings in code and UI
3. Emergency stop functionality
4. Comprehensive logging
5. User must explicitly enable advanced features
6. Region/frequency compliance checks

Example UI Flow

Main Menu
├── Capture (existing)
├── Replay (existing)
├── Scan (existing)
├── Storage (existing)
├── Settings (existing)
└── 🔬 Advanced Research ⚠️
    ├── ⚠️ Legal Warning (must accept)
    ├── Rolling Code Analysis
    │   ├── Capture Sequence
    │   ├── Analyze Pattern
    │   ├── Protocol Detection
    │   └── Export Data
    ├── Signal Intelligence
    │   ├── Auto-Identify Protocol
    │   ├── Decode Signal
    │   └── Quality Analysis
    └── RF Research Tools ⚠️ (Disabled by default)
        ├── ⚠️ Authorization Required
        ├── Frequency Sweep
        ├── Signal Injection
        └── Protocol Fuzzing

Testing Requirements

• Verify all safety mechanisms work
• Test emergency stop functionality
• Validate legal warnings are shown
• Ensure features can be disabled
• Test with known rolling code devices (own devices only)

Legal Disclaimer

All advanced features are for:

• ✅ Educational purposes
• ✅ Security research on own devices
• ✅ Understanding RF vulnerabilities
• ✅ Authorized penetration testing

Never use for:

• ❌ Unauthorized access
• ❌ Illegal jamming
• ❌ Malicious purposes
• ❌ Interfering with others' systems

User assumes all legal responsibility.

This pull request was created from Copilot chat.

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