Implement Package Encryption and Security

[toymak3r]

Overview

Add encryption and security features to the Goethe package system to protect sensitive dialog content and enable secure distribution.

Background

As Goethe packages may contain sensitive or proprietary dialog content, encryption capabilities are essential for secure distribution and storage.

Requirements

Encryption Implementation

• Integrate OpenSSL for cryptographic operations
• Implement AES-256-GCM encryption for package content
• Add key derivation using PBKDF2 or Argon2
• Implement secure random number generation
• Add package signing capabilities

Security Features

• Password-based Encryption
  • User-provided passwords for package protection
  • Secure key derivation with salt
  • Configurable iteration count for key derivation
• Key Management
  • Secure key storage and handling
  • Key rotation capabilities
  • Hardware security module (HSM) support
• Package Signing
  • Digital signatures for package authenticity
  • Certificate-based signing
  • Signature verification
• Access Control
  • Role-based access control
  • Permission management
  • Audit logging

API Enhancements

• Extend Package class with encryption methods
• Add encryption configuration options
• Implement secure package loading
• Add key management utilities

Command-Line Tools

• Enhance gdkg_tool with encryption commands
• Add package encryption/decryption commands
• Add key generation and management commands
• Add signature creation and verification commands

Testing

• Unit tests for encryption functionality
• Security tests for cryptographic operations
• Performance tests for encrypted packages
• Error handling tests for security scenarios
• Penetration testing for security vulnerabilities

Documentation

• Security best practices guide
• Encryption configuration documentation
• Key management procedures
• Security audit guidelines

Technical Details

Encryption Algorithm

• Content Encryption: AES-256-GCM
• Key Derivation: PBKDF2 with SHA-256 (configurable iterations)
• Random Generation: OpenSSL's secure random number generator
• Signature: RSA-2048 or Ed25519

API Design

class EncryptedPackage : public Package {
public:
    EncryptedPackage();
    ~EncryptedPackage();
    
    // Encryption
    bool encrypt(const std::string& password, const EncryptionConfig& config);
    bool decrypt(const std::string& password);
    
    // Signing
    bool sign(const std::string& private_key_path);
    bool verify_signature(const std::string& public_key_path);
    
    // Key management
    static std::string generate_key();
    static bool validate_password_strength(const std::string& password);
};

struct EncryptionConfig {
    int key_derivation_iterations = 100000;
    std::string encryption_algorithm = "AES-256-GCM";
    bool enable_compression = true;
    bool enable_signing = false;
};

Security Considerations

• Key Storage: Never store keys in plain text
• Memory Security: Secure memory clearing after operations
• Timing Attacks: Constant-time operations where possible
• Input Validation: Strict validation of all inputs
• Error Handling: Secure error messages without information leakage

Performance Targets

• Encryption overhead: <50% increase in package creation time
• Decryption overhead: <30% increase in package loading time
• Memory usage: <1.5x package size during operations

Acceptance Criteria

• Encryption system compiles and links successfully
• All security tests pass
• Encrypted packages can be created and decrypted correctly
• Package signing and verification work correctly
• Performance targets are met
• Security audit reveals no critical vulnerabilities
• Documentation is complete and accurate

Priority

High - This is part of the short-term roadmap and essential for secure distribution.

Labels

• enhancement
• security
• encryption
• short-term
• high-priority

Estimated Effort

• Development: 3-4 weeks
• Security Testing: 2-3 weeks
• Documentation: 1 week

Security Notes

• This feature requires careful security review
• Consider external security audit
• Follow cryptographic best practices
• Implement secure coding guidelines