I am trying to encrypt and decrypt data on react-native. so I decided to use the crypto node module in my react native project through browserify. Below is the code snippet I used for encryption but it throws the error TypeError: The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type object in cryptoJS. additionally when I use the code in nodeJS, it works fine but in react native it throws that error. what am I doing wrong here? I think the error was initiated from BUffer.from statement which thinks that the variable k is not an array or more like object. but this is my thought I don't know what the real cause is. Here is the code snippet

const algorithm = 'des-ede';
const key = [
      43,
      57,
      97,
      -68,
      -63,
      -61,
      -40,
      9,
      50,
      87,
      -104,
      101,
      63,
      34,
      -78,
      60,
    ];

    var CryptoJS = require('../crypto/crypto');

    var k = new Buffer.from(key);

    let cipher = CryptoJS.createCipheriv(algorithm, k, null);
    cipher.setAutoPadding(true); //default true
    var ciph = cipher.update("Hello World!'", 'utf8', 'base64');
    ciph += cipher.final('base64');

    console.log(ciph);

I am trying to encrypt and decrypt data on react-native. so I decided to use the crypto node module in my react native project through browserify. Below is the code snippet I used for encryption but it throws the error TypeError: The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type object in cryptoJS. additionally when I use the code in nodeJS, it works fine but in react native it throws that error. what am I doing wrong here? I think the error was initiated from BUffer.from statement which thinks that the variable k is not an array or more like object. but this is my thought I don't know what the real cause is. Here is the code snippet

const algorithm = 'des-ede';
const key = [
      43,
      57,
      97,
      -68,
      -63,
      -61,
      -40,
      9,
      50,
      87,
      -104,
      101,
      63,
      34,
      -78,
      60,
    ];

    var CryptoJS = require('../crypto/crypto');

    var k = new Buffer.from(key);

    let cipher = CryptoJS.createCipheriv(algorithm, k, null);
    cipher.setAutoPadding(true); //default true
    var ciph = cipher.update("Hello World!'", 'utf8', 'base64');
    ciph += cipher.final('base64');

    console.log(ciph);

• javascript
• node.js
• react-native
• encryption
• browserify

• 1 In the code ciphertext and cipher are mixed up and also ciph and ciphertext. Fix that. Try to replace null with '' in createCipheriv. – Topaco Commented Jul 13, 2020 at 8:24
• 1 Thank you for your ment. can you structure as an answer the replace null with '' in createCipheriv, just to accept as an anwser. Thanks – hanan Commented Jul 13, 2020 at 10:03
• I doubt that var k = new Buffer.from(key); is correct, according to node documentation new Buffer has been replaced by Buffer.from(key), so you can't have both new and from (in node versions later than node 8), so it should be var k = Buffer.from(key); – stamstam Commented Feb 23, 2021 at 16:39

1 Answer 1

The issue was resolved, by just replacing null with ' ' in createCipheriv, thanks @Topaco