Skip main navigation

Introduction to Substitution ciphers

Jess Hargreaves gives an introduction to substitution ciphers, and how they may be decrypted using frequency analysis.

Jess Hargreaves gives an introduction to substitution ciphers, and how they may be decrypted using frequency analysis.

Did you find anything in this video particularly surprising?

This article is from the free online

The Mathematics of Cryptography: From Ancient Rome to a Quantum Future

Created by
FutureLearn - Learning For Life

Reach your personal and professional goals

Unlock access to hundreds of expert online courses and degrees from top universities and educators to gain accredited qualifications and professional CV-building certificates.

Join over 18 million learners to launch, switch or build upon your career, all at your own pace, across a wide range of topic areas.

Start Learning now