chargex-ucore-security-module

Introduction

This module was developed as POC for a message signing module that runs as a snap on ubuntu core on a raspberry pi. It uses a patch of the botan library(https://github.com/randombit/botan), pygame for the GUI, Wayland for the display interface, and Mir to manage the display. [Module may also be run on an Ubuntu desktop environment]

Environment

General

• Python 3

Snap specific

• snapd >= 2.45.1 (sudo apt install snapd)
• snapcraft (sudo snap install snapcraft --classic)
• Mir-kiosk (sudo snap install mir-kiosk)

Configuration

From project directory, execute the following:

$ ./configure

Building the snap on raspberry pi running Ubuntu Server

$ snapcraft --destructive-mode

Installing the snap on raspberry pi running Ubuntu Core

Transfer the file to the raspberry pi running Ubuntu core (For rpi installations only) Execute the following from the path of the snap:

$ sudo snap install <snap_name>.snap --devmode

Running the snap on raspberry pi running Ubuntu Core

$ sudo snap run <snap_name>

Caveats

1. Snapcraft does not support cross-compiling for python snaps. This module requires a dedicated rpi running ubuntu server to build the snap.
2. Once built, the snap has to be moved to the rpi running ubuntu core
3. Certain fonts may not be usable in the extension of this module

Resources

• https://ubuntu.com/tutorials/x11-kiosk#5-second-pass-snapping-your-device