create-rsa-public-private-key-pair.js

const crypto = require('crypto')
const fs = require('fs')

const { publicKey, privateKey } = crypto.generateKeyPairSync("rsa", {
  // The standard secure default length for RSA keys is 2048 bits
  modulusLength: 2048,
})

// *********************************************************************
//
// To export the public key and write it to file:

const exportedPublicKeyBuffer = publicKey.export({ type: 'pkcs1', format: 'pem' })
fs.writeFileSync('public.pem', exportedPublicKeyBuffer, { encoding: 'utf-8' })
// *********************************************************************


// *********************************************************************
//
// To export the private key and write it to file

const exportedPrivateKeyBuffer = privateKey.export({ type: 'pkcs1', format: 'pem' })
fs.writeFileSync('private.pem', exportedPrivateKeyBuffer, { encoding: 'utf-8' })

// *********************************************************************

Hello!,

I have a question: When do you send the file that you want the public key and the private key to be encrypted? where is the path of the file to be encrypted?

Thanks you!