implementation for storing encrypted zip file on the blockchain - 1/2 encrypt and upload

uploadEncryptedZipFile.js

const IpfsHttpClient = require('ipfs-http-client')
const EthCrypto = require('eth-crypto')
const intoStream = require('into-stream')

const ipfs = IpfsHttpClient({
  host: 'ipfs.infura.io',
  port: '5001',
  protocol: 'https',
})

const keyPrivate = '0x61ce8b95ca5fd6f55cd97ac60817777bdf64f1670e903758ce53efc32c3dffeb'
const keyPublic = 'fff49b58b83104ff16875452852466a46c7169ba4e368d11830c9170624e0a9509080a05a38c18841718ea4fc13483ac467d3e2d728d41ff16b73b9c943734f8'

function encryptStringWithPublicKey({ message, publicKey }) {
  return EthCrypto
    .encryptWithPublicKey(publicKey, message)
    .then(dataObject => EthCrypto
      .cipher
      .stringify(dataObject))
}

function decryptStringWithPrivateKey({ encryptedString, privateKey }) {
  const decompressedString = EthCrypto.cipher.parse(encryptedString)
  return EthCrypto.decryptWithPrivateKey(privateKey, decompressedString)
}

function handleFileSelected(e) {
  const [file] = Array.from(e.target.files)
  const reader = new FileReader()
  reader.readAsBinaryString(file)
  reader.onload = (event) => {
    encryptStringWithPublicKey({
      message: event.target.result,
      publicKey: keyPublic,
    })
      .then(encryptedString => ipfs.add(
        intoStream(encryptedString),
        {},
        (err, data) => {
          const hash = data[0].hash
          // store this hash from ipfs on smart contract
        },
      ))
  }
}

<input
 onChange={this.handleFileSelected}
 type="file"
 accept=".zip"
/>