@irfanshadikrishad/cipher NPM

@irfanshadikrishad/cipher

A versatile and secure cryptographic library for implementing various cipher algorithms in Node.js applications with zero/0 dependencies.

🚀 Installation

Install the package via npm:

npm install @irfanshadikrishad/cipher

yarn:

yarn add @irfanshadikrishad/cipher

bun:

bun add @irfanshadikrishad/cipher

📖 Usage

Import the library and use a cipher algorithm:

import { Cipher } from "@irfanshadikrishad/cipher"

// Create a Caesar Cipher instance with a shift of 6
const caesar = new Cipher.Caesar(6)

console.log(caesar.encrypt("hello world")) // Output: "nkrru cuxrj"

🔐 Supported Ciphers

This library provides implementations of various classical and modern ciphers:

Cipher	Type	Key required?	Strength	Used In/Notes
Caesar Cipher	Substitution	No	Low	Ancient Rome, Simple Obsfuscation
Atbash Cipher	Substitution	No	Low	Hebrew Cipher, Basic Encryption
Playfair Cipher	Diagraph-based	Yes	Medium	Used in WWI & WWII
Vigenère Cipher	Polyalphabetic	Yes	Medium	Used in Historical Documents
The Alphabet Cipher	Polyalphabetic	Yes	Medium	Inspired by Vigenere, Cryptography Puzzles
Salsa20	Stream Cipher	Yes	High	Modern Cryptography, Secure Communications
ADFGVX	Polybius Square + Columnar Transposition	Yes	Medium	Used in WWI, Known for 6x6 polybius square
AES	Symmetric Block Cipher	Yes	High	Also known as, Rijndael
DES	Symmetric Block Cipher	Yes	Medium	56-bit key, Used in legacy systems, replaced by AES
ECC	Asymmetric (Public-Key Cryptography)	Yes	Very High	Used in modern systems like Bitcoin, TLS, JWT, etc.