Caesar Cipher

April 11, 2007

The Caesar cipher is probably the first type of encryption technique that cryptanalysis learn. It’s a super easy algorithm that uses substitution on plain-text to encrypt a message.
When I first learned about it, I was so excited to write a script that does it so I can get a good understanding of basic encryption techniques. Then, like everyone else, I did a search and found a really good site that gives the source code for JavaScript.

The Caesar Cipher is basically taking a letter of the alphabet and replacing it with the letter 3 spaces to the right. So for instance ‘A’ = ‘D’, B’=’E’, you get it.


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