🏗️Architecture

Keechain's architecture is modular and consists of the following layers:

1. Presentation Layer

2. Application Layer

3. Integration Layer

4. Data Layer

Each layer is designed to handle specific responsibilities, ensuring a clean separation of concerns and facilitating maintainability and scalability.

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Presentation Layer

This layer is responsible for the user interface (UI) and user experience (UX), providing an intuitive and responsive interface for users to interact with the wallet.

Implementation Details

• Framework: Built using Node.js for component-based architecture, enabling reusable UI components.

• State Management: Utilizes Chorme for predictable state management across the application.

• Routing: Employs React Router for managing navigation within the extension.

• Styling: Incorporates CSS-in-JS libraries like styled-components for modular and maintainable styling.

• Accessibility: Follows WCAG guidelines to ensure accessibility for all users.

Key Components

• Dashboard: Displays an overview of the user's assets, recent transactions, and network status.

• Asset Management: Interfaces for sending, receiving, and viewing detailed information about tokens.

• Swap Interface: Allows users to perform token swaps directly within the wallet.

• Bridge Interface: Facilitates cross-chain asset transfers using Keeta's anchor system.

• Settings: Provides options for managing wallet preferences, security settings, and network configurations.

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Application Layer

Handles the core business logic of the wallet, orchestrating operations between the UI and the underlying services.

Implementation Details

• Transaction Management: Constructs, signs, and broadcasts transactions to the Keeta Network.

• Swap Operations: Integrates with decentralized exchange (DEX) protocols to facilitate in-wallet token swaps.

• Bridge Operations: Manages the logic for cross-chain asset transfers via Keeta's anchor system.

• Validation: Implements input validation and error handling to ensure robust operations.

• Middleware: Uses middleware to handle asynchronous actions and side effects, such as API calls and complex computations.

Workflow Example

1. User Action: A user initiates a token swap.

2. Validation: The application layer validates the input parameters.

3. Quote Retrieval: Fetches swap rates and fees from integrated DEXs.

4. Transaction Construction: Builds the transaction with the appropriate parameters.

5. Signing: Signs the transaction using the user's private key.

6. Broadcasting: Sends the signed transaction to the Keeta Network.

7. Feedback: Updates the UI with the transaction status and confirmation details.

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Integration Layer

Manages communication with external services, including blockchain networks, DEXs, and bridge protocols.

• Keeta Network RPC: Interacts with Keeta Network nodes via Remote Procedure Calls (RPC) to fetch blockchain data and submit transactions.

• DEX Integration: Connects with decentralized exchanges through their APIs to facilitate token swaps.

• Bridge Protocols: Interfaces with Keeta's anchor system to manage cross-chain asset transfers.

• Web3 Providers: Utilises the native sdks dependant on which chain is selected into the network settings.

• Error Handling: Implements retry mechanisms and fallback strategies to handle network failures and ensure reliability.

Integration Flow

1. Request Initiation: The application layer sends a request to the integration layer.

2. Service Interaction: The integration layer communicates with the appropriate external service (e.g., Keeta RPC node, DEX API).

3. Response Handling: Processes the response and returns the data to the application layer.

4. Error Management: Handles any errors or exceptions that occur during the interaction.

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Data Layer

Responsible for the secure storage and retrieval of user data, including private keys, transaction history, and user preferences.

• Secure Storage: Utilises chromes buiot in encrypted data storage

• Encryption: Employs AES-256 encryption for storing private keys and seed phrases, with keys derived from user passwords using PBKDF2.

• Data Management: Implements data schemas and indexing for efficient storage and retrieval of transaction history and user settings.

• Backup and Recovery: Provides functionality for users to back up and restore their wallets using encrypted seed phrases.

• Data Synchronization: Ensures that data is consistently synchronized between the UI and the underlying storage.

Security Measures

• Access Control: Implements strict access controls to prevent unauthorized access to sensitive data.

• Data Integrity: Uses checksums and validation mechanisms to ensure data integrity.

• Regular Audits: Conducts regular security audits and code reviews to identify and mitigate potential vulnerabilities.