Fear the ponies - Code dojo about cryptography basics

Breaking news: We are under attack!

Ponies just forged a secret alliance in order to end human civilization and their first move should happen in less than 1 hour. We require your help to access their informations which should allow us to arrange a strike back plan or at least buy us time.

Start your mission and don't fail. You're our only hope...

The algorithms used:

• Caesar cipher
• Monoalphabetic substitution cipher
• Vigenere cipher

Technical Instructions:

Requirements

• NET Core 1.1 SDK

Install & Run

dotnet restore
dotnet run

Go to http://localhost:8080

By default the code dojo take 1 hour but you can specify the ending date:

dotnet run -- --end "2017/06/22 12:30:00" 

or

$env:END="2017/06/22 12:30:00"
dotnet run

On linux, the default timezone is UTC so you'll have to set it before running:

docker container run -p 8080:8080 feartheponies sh -c "echo "Europe/Paris" > /etc/timezone && dpkg-reconfigure -f noninteractive tzdata && dotnet run"

Special thanks:

Based on Raphaël Wach (@raphaelwach) amazing code dojo