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?

user_10290918 · Answer

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')));

Crypto-JS hash functions return object

1 Answers