Cypherpunk Essentials

Cypherpunk Essentials is a set of interactive video lessons that teaches cryptography from the beginning, using activities and puzzles. It covers classical ciphers such as the Caesar cipher and Vigenère cipher, the Enigma machine, and modern cryptography including DES, AES, RSA and hash algorithms.

Learn cryptography

The lessons explain core concepts without requiring prior knowledge. Three-dimensional visualizations illustrate how the principles work, and you can adjust angles and parameters to explore them interactively.

Solve puzzles

The course includes challenging puzzles designed around games, treasure hunts and intelligence.