Simple Encrypt

Description

Simple Encrypt is a simple encryption library for Node.js based on the built-in crypto module that provides a simple API for encrypting and decrypting data using AES. It also provides a CLI for generating keys and encrypting/decrypting files. It exposes two classes, AES-256-CBC and AES_256_CTR, which implement the AES encryption algorithm in CBC and CTR modes respectively. The library also provides a EncryptKey class for generating and managing encryption keys.

Features

• Key generation and management
• CLI for key generation
• AES-256-CBC and AES_256_CTR encryption and decryption
• Encryption and decryption of data and files
• Encryption and decryption of streams
• AES_256_CTR class supports chunked encryption and decryption, allowing you to decrypt only a portion of a file without having to decrypt the entire file

Installation

npm install @darco2903/simple-encrypt

Usage

Key Generation

import { EncryptKey } from "@darco2903/simple-encrypt";

// Generate a key
const key = EncryptKey.generate();
console.log("Key generated");

// Save the key to a json file
await key.toHexFile("key.json");
console.log("Key saved to key.json");

Load Key

import { EncryptKey } from "@darco2903/simple-encrypt";

// Load the key
const keyFromFile = await EncryptKey.fromHexFile("key.json");
console.log("Key loaded from key.json");

// Load the key from a hex string
const keyFromHex = EncryptKey.fromHex(KEY, IV);
console.log("Key loaded from hex string");

Encryption / Decryption

import { AES_256_CBC, EncryptKey } from "@darco2903/simple-encrypt";

const key = EncryptKey.generate();
const se = new AES_256_CBC(key);

const data = Buffer.from("Hello World");
const encrypted = se.encrypt(data);
console.log("Encrypted:", encrypted); // <Buffer ...>

const decrypted = se.decrypt(encrypted);
console.log("Decrypted:", decrypted.toString()); // "Hello World"

CLI

NPM

npx simple-encrypt [command] [options]

PNPM

pnpm exec simple-encrypt [command] [options]

General

Option	Description
-h	Display help
-v	Display version

Key Generation

npx simple-encrypt generate [options]

Option	Default	Description	Required
-B	32	Key length
-s		Save path

⚠️ A key length different from 32 will not work with the encryption and decryption.

Examples

Generate a key and save it to key.json

npx simple-encrypt generate -s key.json
// or
pnpm exec simple-encrypt generate -s key.json