Create Developer_Docs.md

Author: SATUNIX

Docs/Developer_Docs.md

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+To structure your project with main.go and the two libraries keycard_link.go and ipfs_link.go, here is a high-level overview of each program and their functionalities:
+
+1. main.go (Located at /src/main.go)
+The main.go file will serve as the entry point of the application. It will handle user inputs, coordinate the encryption/decryption processes, and manage the flow between Keycard operations and IPFS interactions.
+
+High-Level Overview:
+Import Libraries: Import keycard_link and ipfs_link libraries, along with other necessary Go packages.
+Command-Line Interface (CLI): Implement CLI parsing for user inputs (like file paths, commands for encrypt, decrypt, upload, download, etc.).
+Coordinate Operations: Depending on the user's input, call appropriate functions from the keycard_link and ipfs_link libraries to perform encryption, decryption, upload to IPFS, and download from IPFS.
+Error Handling: Robust error handling for user inputs, file operations, and library function calls.
+User Feedback: Provide feedback to the user about the status of operations, errors, or successful completions.
+2. keycard_link.go (Located at /src/libb/keycard_link.go)
+This library will handle all interactions with the Keycard, including signing operations, key management, and passphrase handling.
+
+High-Level Overview:
+Keycard Integration: Functions to communicate with the Keycard for signing and key management.
+Sign Data: Function to sign data (or passphrase hash) using the Keycard.
+Generate/Retrieve Keys: Functions to generate new keys or retrieve existing keys from the Keycard.
+Handle Passphrase: Securely handle passphrase input for Keycard operations.
+Error Management: Handle errors specific to Keycard operations and provide meaningful error messages.
+3. ipfs_link.go (Located at /src/libb/ipfs_link.go)
+This library will manage interactions with IPFS, including uploading encrypted files and retrieving them.
+
+High-Level Overview:
+IPFS Client Setup: Initialize and configure the IPFS client.
+Upload to IPFS: Function to upload encrypted files to IPFS and return the CID.
+Download from IPFS: Function to download files from IPFS using the provided CID.
+Handle IPFS Errors: Robust error handling for IPFS operations.
+Data Integrity Check: Optionally, implement functionality to verify the integrity of downloaded files.
+General Development Approach:
+Modularity: Keep the code modular by clearly separating Keycard-related functions and IPFS-related functions in their respective libraries.
+Testing: Write unit tests for both libraries to ensure that each function behaves as expected.
+Documentation: Document each function in the libraries, explaining its purpose, inputs, outputs, and any side effects.
+Security: Pay special attention to security, especially in handling cryptographic materials and sensitive user inputs.
+By structuring your application this way, you maintain a clean separation of concerns, where main.go acts as the orchestrator, and the two libraries handle specific functionalities, making the codebase easier to maintain and scale.