One Time Pad – The Uncrackable Code?
The one time pad is a very secure way of encoding messages – so secure in fact that it is unbreakable as long as the agents using it don’t make […]
Monthly Archives: June 2015
Cracking Codes Lesson
Cracking Codes Lesson 1 Introduction: 5 minutes – Use a Morse Code Generator to play some (very slowed down) messages for students to decode. Discuss why this is was a good […]
Crypto Analysis to Crack Vigenere Ciphers
Crypto Analysis to Crack Vigenere Ciphers (This post assumes some familiarity with both Vigenere and Ceasar Shift Ciphers. You can do some background reading on them here first). We can […]
Using Chi Squared to Crack Codes
This is inspired from the great site, Practical Cryptography which is a really good resource for code making and code breaking. One of their articles is about how we can […]
Elliptical Curve Cryptography
Elliptical Curve Cryptography This post builds on some of the ideas in the previous post on elliptical curves. The excellent Numberphile video above expands on some of the ideas below. […]
Cracking ISBN and Credit Card Codes
ISBN codes are used on all books published worldwide. It’s a very powerful and useful code, because it has been designed so that if you enter the wrong ISBN code […]
Aliens and Binary Codes from the Stars
The Drake Equation was intended by astronomer Frank Drake to spark a dialogue about the odds of intelligent life on other planets. He was one of the founding members of […]
RSA Encryption
RSA code is the basis of all important data transfer. Encrypted data that needs to be sent between two parties, such as banking data or secure communications relies on the […]
NSA Code Breaking Puzzle
NSA Code Breaking Puzzle Number 2 Here is the second of the NSA’s code breaking tweets – crack them all and you might have a chance of a job with […]
The School Code Breaking Site 