Caesar Cipher Explained: A Simple & Classic Encryption Method 🔐

The Caesar Cipher technique is one of the earliest and simplest methods of encryption technique. It’s simply a type of substitution cipher, i.e., each letter of a given text is replaced by a letter with a fixed number of positions down the alphabet. For example with a shift of 1, A would be replaced by B, B would become C, and so on. The method is apparently named after Julius Caesar, who apparently used it to communicate with his officials.
Thus to cipher a given text we need an integer value, known as a shift which indicates the number of positions each letter of the text has been moved down.
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Please see the video Introduction to Cryptography:

https://www.youtube.com/watch?v=omdirq5_cMo

Substitution vs Transformation techniques:

https://www.youtube.com/watch?v=4e-_-XSEE74&t=5s

Shift Cipher | Classical Cryptography Techniques (English version):

https://youtu.be/Raylin63UNQ