To decrypt the message, the process is reversed. Caesar ciphers are often shown using a Caesar cipher wheel diagram, to illustrate that when the end of the alphabet is reached it goes around again.

The original version of this story appeared in Quanta Magazine. For thousands of years, if you wanted to send a secret message, there was basically one way to do it. You’d scramble the message using a ...

Encryption close encryptionFiles that are encrypted have been altered using a secret code and are unreadable to unauthorised parties. is the process of disguising a message so that it cannot be ...