Calculate Hash of a remote resource - JS


What I’m trying to achieve is to get an MD5 of a file on a server.
I chose to use fetch to get the file and CryptoJS to calculate the hash but spent already more than 5 hours without luck, I do get a hash but it’s wrong.
To get the right hash I downloaded the file and calculated it manually on linux using md5sum.

First I tried this in NodeJS (although my code should run in a browser) :

fs.readFile('my_file', function(err, buf) {
    console.log(md5(buf)); //works but I need CryptoJS not md5
    console.log(CryptoJS.MD5(buf.toString("binary")).toString());  //wrong
    console.log(CryptoJS.MD5(buf.toString()).toString()); //wrong

Later I found a code sample here:

Relevant part is:

  function calculateMD5(blob) {
      return new Promise((resolve) => {
        const reader = new FileReader();
        reader.onloadend = function () {
          var wordArray = CryptoJS.lib.WordArray.create(reader.result),
            hash = CryptoJS.MD5(wordArray).toString();

I tested using:

await fetch(URL())
        .then((response) => response.blob())

But result were wrong.

I have no clue how can I get a right MD5 for a remote file using fetch+CryptoJS

I found why the latest algorithm didn’t work as expected, apparently you must include this script
for this to work