Skip to content

Latest commit

 

History

History
57 lines (35 loc) · 1.83 KB

index-developer.md

File metadata and controls

57 lines (35 loc) · 1.83 KB
Raw

Documentation for developers of the Smart Card Connector App

Overview

Main components of the Smart Card Connector App:

  • PC/SC-Lite Daemon,
  • CCID Free Software Driver,
  • UI.

PC/SC-Lite Daemon

The app is bundled with a port of the PC/SC-Lite daemon. For the background, see the original documentation of the PC/SC-Lite daemon on Linux: http://linux.die.net/man/8/pcscd.

The daemon is ported using the Emscripten/WebAssembly technology for running inside the JavaScript-based app.

Our port of the daemon exposes the PC/SC API to other ChromeOS extensions/apps: see docs/connector-app-api.md.

CCID Free Software Driver

The app is bundled with the CCID Free Software Driver (https://ccid.apdu.fr/). This driver implements talking to smart card readers that are compatible with the CCID specification.

Similar to the PC/SC-lite Daemon, the CCID Free Software Driver is ported using the Emscripten/WebAssembly technology.

The low-level USB operations are implemented using our port of the libusb library, which is redirecting all requests to the chrome.usb API (see https://developer.chrome.com/apps/usb).

Building the code

See docs/building.md.

Potential future enhancements

  • Pluggable smart card reader drivers.

    Currently, there's only the CCID Free Software Driver supported. We might want to extend this in the future, by exposing a new API that would allow separate ChromeOS extensions/apps to implement drivers for other devices.

Maintenance tasks