keygentoolshed/keyGen/encryptandecrypt/encryptChunk.js

Key generation utilities for cryptographic operations. QUANTUM ENCRYPTION FOLDER UPDATE!!! See its folder for all <3

// Btw, if ur reading this, this is the first file i made of the encryptandecrypt folder!!! Also the outputfile shortened to ouf its because i dont want it to be of cuz that can mean a bad thing
import crypto from 'crypto';
import fs from 'fs';
import yargs from 'yargs/yargs';
import { hideBin } from 'yargs/helpers';

const argv = yargs(hideBin(process.argv))
    .option('chunk', {
        alias: 'c',
        description: 'Path to the file containing the chunk to encrypt',
        type: 'string',
        demandOption: true
    })
    .option('method', {
        alias: 'm',
        description: 'Encryption method to use',
        type: 'string',
        choices: [
            'aes-128-cbc', 'aes-192-cbc', 'aes-256-cbc',
            'aes-128-xts', 'aes-192-xts', 'aes-256-xts',
            'aes-128-gcm', 'aes-192-gcm', 'aes-256-gcm',
            'des-ede3-cbc', 'rc4', 'chacha20',
            'twofish', 'serpent', 'blowfish',
            'cast5', 'idea', 'rc2', 'seed',
            'camellia-128-cbc', 'camellia-192-cbc', 'camellia-256-cbc'
        ],
        demandOption: true
    })
    .option('outputfile', {
        alias: 'ouf',
        description: 'Path to save the encrypted chunk',
        type: 'string',
        demandOption: true
    })
    .help()
    .argv;

function encryptChunk(chunkPath, method, outputPath) {
    const chunk = fs.readFileSync(chunkPath);

    const key = crypto.randomBytes(32); 
    const iv = crypto.randomBytes(16); 

    const cipher = crypto.createCipheriv(method, key, iv);
    
    let encrypted = cipher.update(chunk);
    encrypted = Buffer.concat([encrypted, cipher.final()]);

    fs.writeFileSync(outputPath, encrypted);
    
    console.log(`Encrypted chunk saved to: ${outputPath}`);
    console.log('Encryption Key (RAW):', key); 
    console.log('IV (RAW):', iv);
}

encryptChunk(argv.chunk, argv.method, argv.outputfile);