如何计算浏览器 JavaScript 中字符串的 SHA hash

Question

Very new to JavaScript I am.

What I think I know

• There's the CryptoJS module for the frontend.
• There's a Closure Library by Google.

I tried

• Using the CryptoJS module. But I didn't get the hexadecimal hash.
• Using the closure library according to this doc , this example and from this cdn .

But my question is

• Is there a native crypto library on browser?

Answer 1

There is a native browser crypto.

A code example for what you want is:

const text = 'An obscure body in the S-K System, your majesty. The inhabitants refer to it as the planet Earth.';

async function digestMessage(message) {
  const encoder = new TextEncoder();
  const data = encoder.encode(message);
  const hash = await crypto.subtle.digest('SHA-256', data);
  return hash;
}

digestMessage(text)
  .then(digestBuffer => console.log(digestBuffer.byteLength));

The above example is found here which is a good start for in-browser cryptography.