CDRM Extension

An extension to show keys from DRM protected content, which are used to decrypt content.

Notes

Keep these extension core files inside src:

• background.js
• content.js
• inject.js
• manifest.json

The mv2 folder is for Manifest v2 backup for legacy reasons.

Frontend React source stays in frontend.

The build process will take care of everything into extension-release.

To update the version across the entire project, simply change the version number in the root package.json. The build script will handle version sync automatically to both the extension's version and the frontend's title bar.

Build instructions

Prerequisites

• Node.js v21 or higher. Download Node.js here.

How to build by yourself

• Open terminal at the project root

• Run the build script:

npm run buildext

This will:

• Sync the version number from the root package.json to src/manifest.json and frontend/package.json
• Install frontend dependencies if needed
• Build the React frontend
• Clean and prepare the extension-release folder
• Copy extension files in src, built frontend assets, and icons into extension-release

How to load the extension in Google Chrome or Chromium browsers

1. Go to chrome://extensions/
2. Enable Developer mode
3. Click Load unpacked and select the extension-release folder
4. Verify the extension is working by clicking its icon or opening the developer console (F12) to check for any logs or errors.