From 452bae3a18facce2005213a1871c8d01791e8af6 Mon Sep 17 00:00:00 2001 From: Sameh Abouelsaad Date: Wed, 7 May 2025 12:44:59 +0300 Subject: [PATCH] Add A high-level specification document that outlines the module architectural vision --- ENHANCEMENT_SPEC.md | 381 ++++++++++++++++++++++++++++++++++++++++++++ README.md | 9 ++ 2 files changed, 390 insertions(+) create mode 100644 ENHANCEMENT_SPEC.md diff --git a/ENHANCEMENT_SPEC.md b/ENHANCEMENT_SPEC.md new file mode 100644 index 0000000..0547651 --- /dev/null +++ b/ENHANCEMENT_SPEC.md @@ -0,0 +1,381 @@ +# WebAssembly Cryptography Module Enhancement Specification + +## 1. Executive Summary + +This document outlines the architectural vision for extending the WebAssembly Cryptography Module with a Command Line Interface (CLI), Rhai scripting capabilities, and messaging system integration. These enhancements will transform the module from a browser-focused library into a versatile cryptographic toolkit that can operate across multiple contexts while maintaining its existing WebAssembly functionality. + +## 2. System Overview + +### 2.1 Current System + +The existing WebAssembly Cryptography Module provides: +- Secure key management with encrypted storage +- Asymmetric cryptography operations (ECDSA) +- Symmetric encryption (ChaCha20Poly1305) +- Ethereum wallet functionality +- Browser integration via WebAssembly + +### 2.2 Enhanced System Vision + +The enhanced system will extend these capabilities to: +- Provide command-line access to all cryptographic functions +- Enable automation through scripting +- Support remote operation via messaging +- Maintain WebAssembly compatibility + +## 3. Architecture Overview + +### 3.1 Component Architecture + +``` +┌─────────────────────────────────────────────────────────────┐ +│ │ +│ User Interaction Layer │ +│ │ +├───────────────────┐ ┌─────────────────┐ │ +│ │ │ │ │ +│ WebAssembly UI │ │ CLI Interface │ │ +│ │ │ │ │ +└─────────┬─────────┘ └────────┬────────┘ │ + │ │ │ + └────────────────┐ ┌─────────────────┘ │ + │ │ │ + ▼ ▼ │ +┌─────────────────────────────────────────────────────────────┤ +│ │ +│ Cryptographic Core API │ +│ │ +├─────────────────────────────────────────────────────────────┤ +│ │ +│ ┌─────────────────┐ ┌────────────────┐ ┌───────────────┐ │ +│ │ │ │ │ │ │ │ +│ │ Key Management │ │ Cryptographic │ │ Ethereum │ │ +│ │ │ │ Operations │ │ Wallet │ │ +│ │ │ │ │ │ │ │ +│ └─────────────────┘ └────────────────┘ └───────────────┘ │ +│ │ +└─────────────────────────────────────────────────────────────┘ + ▲ + │ + ┌───────────┴───────────┐ + │ │ +┌─────────┴─────────┐ │ +│ │ │ +│ Rhai Scripting │◄────────────┘ +│ Engine │ +│ │◄────────────┐ +└─────────┬─────────┘ │ + │ │ + ▼ │ +┌─────────────────────┐ │ +│ │ │ +│ Messaging System │───────────┘ +│ │ +│ │ +└─────────────────────┘ +``` + +### 3.2 Logical Architecture + +```mermaid +graph TD + User[User] --> CLI[CLI Interface] + User --> WebUI[Web UI] + CLI --> Core[Cryptographic Core] + WebUI --> WASM[WebAssembly Module] + WASM --> Core + CLI --> ScriptEngine[Rhai Script Engine] + ScriptEngine --> Core + CLI --> Messaging[Messaging System] + Messaging --> ScriptEngine + RemoteSystems[Remote Systems] --> Messaging + + subgraph "Core Functionality" + Core --> KeyMgmt[Key Management] + Core --> CryptoOps[Cryptographic Operations] + Core --> EthWallet[Ethereum Wallet] + Core --> Storage[Secure Storage] + end +``` + +## 4. Component Specifications + +### 4.1 Command Line Interface (CLI) + +#### 4.1.1 Purpose +Provide a command-line interface to all cryptographic functions, enabling scripting, automation, and integration with other tools. + +#### 4.1.2 Key Features +- Command categories for different functional areas +- Interactive and non-interactive modes +- Configuration management +- Comprehensive help system + +#### 4.1.3 Command Structure +``` +crypto-cli [OPTIONS] + +COMMANDS: + key Key management operations + crypto Cryptographic operations + ethereum Ethereum wallet operations + script Execute Rhai scripts + listen Listen for scripts via messaging + shell Start interactive shell + help Print help information +``` + +### 4.2 Rhai Scripting Engine + +#### 4.2.1 Purpose +Enable automation of cryptographic operations through a secure scripting language. + +#### 4.2.2 Key Features +- Access to all cryptographic functions +- Sandboxed execution environment +- Script validation and error handling +- Support for conditional logic and data processing + +#### 4.2.3 Script Flow Example + +```mermaid +sequenceDiagram + participant User + participant CLI + participant ScriptEngine + participant CryptoCore + + User->>CLI: Execute script + CLI->>ScriptEngine: Load and validate script + ScriptEngine->>CryptoCore: Create key space + CryptoCore-->>ScriptEngine: Success + ScriptEngine->>CryptoCore: Create keypair + CryptoCore-->>ScriptEngine: Success + ScriptEngine->>CryptoCore: Sign message + CryptoCore-->>ScriptEngine: Signature + ScriptEngine-->>CLI: Script result + CLI-->>User: Display result +``` + +### 4.3 Messaging System + +#### 4.3.1 Purpose +Enable remote execution of cryptographic operations through a secure messaging system. + +#### 4.3.2 Options + +**Option A: Mycelium** +- Peer-to-peer architecture +- End-to-end encryption by default +- NAT traversal capabilities +- Rust native implementation + +**Option B: NATS** +- Client-server architecture +- High performance and scalability +- Mature ecosystem +- Extensive documentation + +#### 4.3.3 Messaging Flow + +```mermaid +sequenceDiagram + participant RemoteSystem + participant MessagingSystem + participant CLI + participant ScriptEngine + participant CryptoCore + + RemoteSystem->>MessagingSystem: Send script + MessagingSystem->>CLI: Deliver script + CLI->>ScriptEngine: Execute script + ScriptEngine->>CryptoCore: Perform operations + CryptoCore-->>ScriptEngine: Operation results + ScriptEngine-->>CLI: Script result + CLI->>MessagingSystem: Send result + MessagingSystem->>RemoteSystem: Deliver result +``` + +## 5. Data Flows + +### 5.1 CLI Operation Flow + +```mermaid +flowchart TD + A[User Input] --> B{Command Type} + B -->|Key Management| C[Process Key Command] + B -->|Cryptographic| D[Process Crypto Command] + B -->|Ethereum| E[Process Ethereum Command] + B -->|Script| F[Process Script Command] + B -->|Messaging| G[Process Messaging Command] + + C --> H[Execute Core API] + D --> H + E --> H + F --> I[Execute Script Engine] + I --> H + G --> J[Execute Messaging System] + J --> I + + H --> K[Return Result] + K --> L[Format Output] + L --> M[Display to User] +``` + +### 5.2 Script Execution Flow + +```mermaid +flowchart TD + A[Script Input] --> B[Parse Script] + B --> C[Validate Script] + C --> D{Valid?} + D -->|No| E[Report Error] + D -->|Yes| F[Initialize Sandbox] + F --> G[Execute Script] + G --> H{Error?} + H -->|Yes| I[Handle Error] + H -->|No| J[Process Result] + I --> K[Return Error] + J --> L[Return Result] +``` + +### 5.3 Messaging System Flow + +```mermaid +flowchart TD + A[Remote System] --> B[Send Message] + B --> C[Messaging Transport] + C --> D[Receive Message] + D --> E[Validate Message] + E --> F{Valid?} + F -->|No| G[Reject Message] + F -->|Yes| H[Extract Script] + H --> I[Execute Script] + I --> J[Generate Result] + J --> K[Format Response] + K --> L[Send Response] + L --> M[Messaging Transport] + M --> N[Remote System] +``` + +## 6. Security Architecture + +### 6.1 Security Layers + +```mermaid +flowchart TD + A[User/System Input] --> B[Input Validation] + B --> C[Authentication] + C --> D[Authorization] + D --> E[Sandboxed Execution] + E --> F[Cryptographic Operations] + F --> G[Secure Storage] + + H[Security Monitoring] --> B + H --> C + H --> D + H --> E + H --> F + H --> G +``` + +### 6.2 Key Security Measures + +- **Input Validation**: All inputs are validated before processing +- **Authentication**: Users and systems must authenticate before accessing sensitive operations +- **Authorization**: Access to operations is controlled based on authentication +- **Sandboxing**: Scripts execute in a restricted environment +- **Encryption**: All sensitive data is encrypted at rest and in transit +- **Secure Storage**: Keys are stored in encrypted form +- **Monitoring**: Security events are logged and monitored + +## 7. Integration Points + +### 7.1 WebAssembly Integration + +The enhanced system will maintain compatibility with the existing WebAssembly module, allowing browser-based applications to continue using the cryptographic functionality. + +### 7.2 CLI Integration + +The CLI will integrate with the operating system's command-line environment, enabling integration with shell scripts and other command-line tools. + +### 7.3 Messaging Integration + +The messaging system will provide integration points for remote systems to send scripts and receive results, enabling distributed cryptographic operations. + +## 8. Deployment Architecture + +### 8.1 Standalone Deployment + +```mermaid +flowchart TD + A[User] --> B[CLI Application] + B --> C[Local File System] + B --> D[Local Cryptographic Operations] +``` + +### 8.2 Networked Deployment + +```mermaid +flowchart TD + A[User] --> B[CLI Application] + B --> C[Local File System] + B --> D[Local Cryptographic Operations] + B <--> E[Messaging System] + F[Remote System] <--> E + G[Remote System] <--> E +``` + +### 8.3 Web Deployment + +```mermaid +flowchart TD + A[User] --> B[Web Browser] + B --> C[WebAssembly Module] + C --> D[Browser Storage] + C --> E[Browser Cryptographic Operations] +``` + +## 9. Decision Matrix: Mycelium vs. NATS + +| Criteria | Mycelium | NATS | +|----------|----------|------| +| **Architecture** | Peer-to-peer | Client-server | +| **Decentralization** | High | Low | +| **Security** | End-to-end encryption by default | TLS support | +| **NAT Traversal** | Built-in | Requires configuration | +| **Maturity** | Newer project | Established project | +| **Documentation** | Limited | Extensive | +| **Performance** | Good for P2P scenarios | Optimized for high throughput | +| **Deployment Complexity** | No central server needed | Requires server setup | +| **Language Support** | Rust native | Multiple language clients | + +## 10. Implementation Roadmap + +### 10.1 Milestones + +1. **CLI Core Implementation Complete** + - Basic CLI structure implemented + - All cryptographic functions accessible via CLI + - Interactive shell functional + +2. **Rhai Scripting Integration Complete** + - Script execution functional + - All cryptographic functions accessible via scripts + - Sandboxing implemented + +3. **Messaging System Integration Complete** + - Selected messaging system integrated + - Remote script execution functional + - Security measures implemented + +4. **Project Complete** + - All tests passing + - Documentation complete + - Release candidate ready + +## 11. Conclusion + +The enhanced WebAssembly Cryptography Module will provide a versatile cryptographic toolkit that can operate across multiple contexts, from browser applications to command-line tools to distributed systems. By adding CLI capabilities, Rhai scripting, and messaging system integration, the module will support a wider range of use cases while maintaining its existing WebAssembly functionality. + +The choice between Mycelium and NATS for the messaging system will depend on specific requirements for decentralization, security, and deployment complexity. Both options provide viable paths forward, with different trade-offs in terms of architecture and capabilities. diff --git a/README.md b/README.md index 433d8d7..b9ac87c 100644 --- a/README.md +++ b/README.md @@ -2,6 +2,15 @@ This project provides a WebAssembly module written in Rust that offers cryptographic functionality for web applications. +## Planned Enhancements + +We are planning significant enhancements to this module, including: +- Command Line Interface (CLI) +- Rhai scripting capabilities +- Messaging system integration (Mycelium or NATS) + +For details, see the [Enhancement Specification](ENHANCEMENT_SPEC.md). + ## Features - **Key Space Management**