Lexicoding Governance Protocol

Protocol-level Governance for AI Reasoning & Output Authorization

The Lexicoding Governance Protocol (VARX) provides a cryptographically-verified governance framework for AI systems, enabling secure decision-making with immutable audit trails.

Overview

The Lexicoding Governance Protocol implements a three-node architecture that ensures:

• Authenticity: All messages are cryptographically signed with Ed25519
• Integrity: Tamper-evident hash chains protect audit records
• Non-Repudiation: Digital signatures prevent denial of actions
• Replay Protection: Secure nonces prevent message replay attacks

Architecture

┌─────────────┐         ┌─────────────┐         ┌──────────────┐
│  ModelNode  │         │  VARXNode   │         │ AuditorNode  │
└──────┬──────┘         └──────┬──────┘         └──────┬───────┘
       │                       │                        │
       │ 1. Signed Request     │                        │
       ├──────────────────────>│                        │
       │                       │ 2. Evaluate π_varx     │
       │                       │ 3. Apply Rules         │
       │ 4. Signed Decision    │                        │
       │<──────────────────────┤                        │
       │                       │ 5. Audit Record        │
       │                       ├───────────────────────>│
       │                       │                        │ 6. Add to Chain

Components

Node	Purpose
ModelNode	AI system interface - generates signed governance requests
VARXNode	Decision engine - evaluates reasoning with π_varx semantic analysis
AuditorNode	Audit trail - maintains cryptographic hash chain of all decisions

Features

• Ed25519 Digital Signatures - 128-bit security for message authentication
• SHA256 Hash Chains - Tamper-evident audit trails
• π_varx Semantic Engine - AI reasoning pathway analysis
• Configurable Rule Bundles - Flexible governance policies
• HKDF Key Derivation - Secure key management
• Replay Protection - Secure nonces prevent attacks

Installation

Requirements

• Python 3.9 or higher
• pip (Python package installer)

Install from source

# Clone the repository
git clone https://github.com/Lexicoding-systems/Lexicoding-Governance.git
cd Lexicoding-Governance

# Install the package
pip install -e .

Install dependencies only

pip install -r requirements.txt

Development installation

pip install -e ".[dev]"

Quick Start

from core.crypto import generate_keypair, sign_message, verify_signature

# Generate node identity
private_key, public_key = generate_keypair()

# Sign a governance request
request = {
    "type": "governance_request",
    "action": "data_access",
    "reasoning": {"steps": [{"step": 1, "reasoning": "User consent obtained"}]}
}
signature = sign_message(request, private_key)

# Verify the signature
is_valid = verify_signature(request, signature, public_key)
print(f"Signature valid: {is_valid}")

Project Structure

lexicoding-governance/
├── src/
│   ├── audit/          # Audit trail and hash chain
│   ├── core/           # Cryptographic primitives
│   ├── engine/         # π_varx semantic engine & SAT solver
│   ├── nodes/          # ModelNode, VARXNode, AuditorNode
│   └── utils/          # Utility functions
├── tests/              # Test suite
├── docs/               # Documentation
│   ├── architecture.md
│   ├── cryptography.md
│   ├── api-specification.md
│   └── regulatory-compliance.md
├── pyproject.toml      # Project configuration
└── requirements.txt    # Dependencies

Documentation

• Architecture Overview - Detailed system architecture
• Cryptography - Cryptographic primitives and security
• API Specification - Protocol API documentation
• Regulatory Compliance - Compliance guidelines

Development

Running Tests

# Run all tests
pytest

# Run with coverage
pytest --cov=src --cov-report=term-missing

# Run specific test file
pytest tests/test_crypto.py

Code Quality

# Format code
black src tests

# Sort imports
isort src tests

# Lint code
ruff check src tests

# Type checking
mypy src

Security

The VARX Protocol employs industry-standard cryptographic primitives:

Primitive	Algorithm	Security Level
Digital Signatures	Ed25519	128-bit
Hash Functions	SHA256	128-bit collision resistance
Key Derivation	HKDF-SHA256	256-bit
Nonces	CSPRNG	128-bit randomness

Reporting Security Issues

Please report security vulnerabilities by opening an issue or contacting the maintainers directly.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contact

• Organization: Lexicoding Systems
• Email: Jacobporter@Lexicoding.tech
• GitHub: Lexicoding-systems

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