Cryptography Workshop

A two-hour cryptography workshop adaptable for students between 10-18 years and usable for online teaching.

Timetable

00:00 Introducing each other & solving technical issues

Part I - What is cryptography about?

00:10 Main concepts, ideas and challenges of cryptography

00:20 Video + discussion of privacy

00:35 First quiz on Kahoot

Part II - Practical exercises with classical ciphers

00:50 Learn to use the Cipher wheel & send each other encrypted messages

01:15 Column Confusion challenge on cyberstartgo

Optional Vigenère Cipher

Part III - Cryptanalysis

01:25 What is a code

01:30 Fingerprint challenge on cyberstartgo

01:40 Discussion about brute-force attacks and password security

Optional Frequency analysis with the Caesar cipher

01:45 Final quiz on Kahoot

Further Ressources

• Crypto 101
• Cyberstartgo
• Google CTF Beginner's Quest
• Enigma Machine on brilliant.org
• Practical Cryptography
• Cryptools