https://github.com/subhajitroycode/caesar-cipher

This is fun project of Caesar Cipher 🤩
https://github.com/subhajitroycode/caesar-cipher

Last synced: 8 months ago
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This is fun project of Caesar Cipher 🤩

• Host: GitHub
• URL: https://github.com/subhajitroycode/caesar-cipher
• Owner: subhajitroycode
• Created: 2021-12-27T09:05:40.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2025-02-23T09:07:51.000Z (about 1 year ago)
• Last Synced: 2025-02-23T10:19:27.118Z (about 1 year ago)
• Language: JavaScript
• Homepage: https://subhajitroycode.github.io/caesar-cipher/
• Size: 3.91 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Caesar Cipher

This is fun project of Caesar Cipher 🤩

## A Little bit about Caesar Cipher

In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code or Caesar shift, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet. For example, with a left shift of 3, D would be replaced by A, E would become B, and so on. The method is named after Julius Caesar, who used it in his private correspondence.

The encryption step performed by a Caesar cipher is often incorporated as part of more complex schemes, such as the Vigenère cipher, and still has modern application in the ROT13 system. As with all single-alphabet substitution ciphers, the Caesar cipher is easily broken and in modern practice offers essentially no communications security. 

![](https://upload.wikimedia.org/wikipedia/commons/thumb/3/33/ROT13_table_with_example.svg/480px-ROT13_table_with_example.svg.png)

## Example

For example, in the following joke, the punchline has been obscured by ROT13:

    Why did the chicken cross the road?

    Gb trg gb gur bgure fvqr!

Transforming the entire text via ROT13 form, the answer to the joke is revealed:

    Jul qvq gur puvpxra pebff gur ebnq?

    To get to the other side!

A second application of ROT13 would restore the original.