Caesar Cipher

Caesar Cipher is a text encryption to shift letters to encrypt message in ancient time.

This package are some packed functions using for process Caesar cipher.

Installation

• Browser

Add this script tag to your html code

<script src="https://cdn.jsdelivr.net/npm/js-caesarcipher/script.js"></script>

• Node.js

Install Command

npm install js-caesarcipher

Useage

For node.js enviroment

If you are in node.js enviroment, you need to initalize first

const CaesarCipher = require("js-caesarcipher");

Cipher the text

Use the function new CaesarCipher() to cipher raw text.

Example: "Hello World", after shifting 2 letters will be "Jgnnq Yqtnf"

// For Browser useage
let cipher = new CaesarCipher({
    "input": "Hello World",
    "shift": 2
});
console.log(cipher.result);

// For Node.js useage
const cipher = CaesarCipher.cipher({
    "input": "Hello World",
    "shift": 2
});

console.log(cipher.result);

// The output will be "Jgnnq Yqtnf"

• The input is unciphered plain text.
• The shift is shift how many letters.

Decipher the text

Use the function CaesarCipher.deCipher() to decipher ciphered text.

// For both Browser and Node.js useage
let decipher = CaesarCipher.deCipher("Jgnnq Yqtnf", 2);
console.log(decipher)
// The output will be "Hello World"

Crack ciphered text

Use the function CaesarCipher.crack() to crack all the possible shifts of a ciphered text if you don't have the shift.

// For both Browser and Node.js useage
let crack = CaesarCipher.crack("Jgnnq Yqtnf");
console.log(crack);
/* 

The output will be a array which list out all the shifts: 

Example output:
[
    'Jgnnq Yqtnf',
    'Khoor Zruog',
    'Lipps Asvph',
    'Mjqqt Btwqi',
    'Nkrru Cuxrj',
    'Olssv Dvysk',
    'Pmttw Ewztl',
    'Qnuux Fxaum',
    'Rovvy Gybvn',
    'Spwwz Hzcwo',
    'Tqxxa Iadxp',
    'Uryyb Jbeyq',
    'Vszzc Kcfzr',
    'Wtaad Ldgas',
    'Xubbe Mehbt',
    'Yvccf Nficu',
    'Zwddg Ogjdv',
    'Axeeh Phkew',
    'Byffi Qilfx',
    'Czggj Rjmgy',
    'Dahhk Sknhz',
    'Ebiil Tloia',
    'Fcjjm Umpjb',
    'Gdkkn Vnqkc',
    'Hello World',
    'Ifmmp Xpsme'
]

*/