Caesar Cipher (Part 1)

Polyalphabetic Cipher (Vigenère Cipher)

Hill Cipher (Encryption)

Kasou Taishou: La magia del Masquerade japonés

Young mum Amber Curragh is determined to warn others about the devastating effects of ketamine use after being left with such severe bladder damage, she has to spend two hours a day in the bath and wear incontinence pads just to cope. Experts have been warning about the dangers of the drug for years - and now new research shows deaths linked to it have risen twenty-fold in the last decade. For more information and support around drug addiction, call the Frank helpline on 0300 123 6600 or visit t

Overcoming Challenges as a Creator and Finding Support

Caesar Cipher (Part 2)

Monoalphabetic Cipher

The Science of Codes: An Intro to Cryptography