Crypto-JS hash functions return object

Question

I'm trying to hash a string using the crypto-js library in a react/typescript project. I'm using crypto-js 3.1.9 and @types/crypto-js 3.1.33.

Here's some code:

import CryptoJS = require("crypto-js");

export const hashString= (str: string): string => {
  const hash = CryptoJS.MD5(str);
  return hash;
}

I expect hash to be of type string, as specified in the documentation of the crypto-js implementation. But the function returns an object, that contains a wordarray.

I also tried calling

hash.toString(CryptoJS.enc.Hex)

but that didn't work, because typescript also assumes that hash will be a string. So a parameterized toString function is not allowed.

What am I doing wrong?

hash.toString(CryptoJS.enc.Hex) should be correct, but you can also try hash.toString() — Artjom B.
– Artjom B., Commented Jul 13, 2017 at 19:17
@NeriusJok I was never able to solve it and implemented by own MD5 — Androidicus
– Androidicus, Commented Jun 4, 2018 at 9:14

Abraham Labkovsky · Accepted Answer · 2021-01-28 16:25:18Z

1

I know this is an old question, but I had this question recently and in case someone is looking for an answer, I just cast the result to a string. Seems to work fine for me.

console.log(typeof CryptoJS.MD5('hello'));
console.log("String() => ", String(CryptoJS.MD5('hello')));

<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.0.0/crypto-js.min.js"></script>

answered Jan 28, 2021 at 16:25

Abraham Labkovsky

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