i2cns-19

Introduction to Computer and Network Security 2019 workshop material.

Exercises are provided as jupyter notebooks. Those who wish to try out the code in their browser without installing anything on their machine may do so. Those who wish to run code on their own machine will find it easier to copy-and-paste it from notebooks than pdf files.

There are several cryptography libraries, with varying degrees of user-friendliness and capabilities - see for instance this crypto API comparison. We shall use cryptography.io.

jupyter

Running notebooks in the cloud

You can use the free service (see this introduction) to clone this github repo to your projects. You can also use this container, but it will likely be slower and has a limit on the number of simultaneous connections.

Setup on a local linux machine

apt install python3-pip python3-setuptools python3-venv

python3 -m pip install --upgrade pip

setup a virtual env to install the package (recommended):

python3 -m venv ./env

source ./env/bin/activate

python3 -m pip install wheel

python3 -m pip install jupyter

To have the notebook recognize installed python packages, add the path to the packages to your PYTHONPATH os variable, e.g. add something like this to your ~/.profile

PYTHONPATH="${PYTHONPATH}:/usr/lib/python3/dist-packages/"

export PYTHONPATH

Then either force your current terminal to update with the new changes

source ~/.profile

or logout and back in.

Starting the notebook

./env/bin/jupyter notebook

I recommend jupyterthemes

./env/bin/jupyter jt -t chesterish