CryptoJS equivalent

[whittlem]

I'm trying to get CryptoJS to do the same as this from the "crypto" library...

const what = timestamp + method.toUpperCase() + path + body;
const key = Buffer.from(auth.secret, 'base64');
const hmac = crypto.createHmac('sha256', key);
const signature = hmac.update(what).digest('base64');

This is what I have...

const what = `${timestamp}${method}${path}${body}`;
const hmac = CryptoJS.HmacSHA512(what, secret).toString();
const wordArray = CryptoJS.enc.Utf8.parse(signed);
const signature = CryptoJS.enc.Base64.stringify(wordArray);

I'm sure it is something small but I can't seem to get it working.

Is someone able to help?

[whittlem]

I have tried this now also with no luck...

const what = `${timestamp}${method}${path}${body}`;
const key = Buffer.from(secret, 'base64').toString('ascii');
const hmac = CryptoJS.HmacSHA512(what, secret64).toString();
const signature = Buffer.from(hmac).toString('base64');

[whittlem]

I think the problem is this:

const signature = hmac.update(what).digest('base64');

How would I do this in crypto-js?

I thought maybe this would do it but it seems not...

const hmac = CryptoJS.HmacSHA512(what, secret64).toString();
const signature = Buffer.from(hmac).toString('base64');

[whittlem]

I found another example where they did this...

var timestamp = Math.floor(Date.now() / 1000);
var message = timestamp + method + '/v2/' + path + bodyStr;
var signature = crypto.createHmac('sha256', this.apiSecret).update(message).digest('hex');

Does that mean the result is hex encoded?

[geastwood]

Hey @whittlem
I tried to reproduce what you have posted. By trying to replace
const hmac = CryptoJS.HmacSHA512(what, secret).toString();
to
const hmac = CryptoJS.HmacSHA512(what, secret).toString(CryptoJS.enc.Base64)
I managed to generate the same result.

[whittlem]

Thanks very much. I will try that.

[Bardiamist]

@whittlem @geastwood Hey, maybe you know how to implement equivalent code if update calls twice?

const crypto = require('crypto');
const hmac = crypto.createHmac('sha512', 'key');
const str = hmac.update('what').digest('hex');
console.log(str);

Equivalent:

import hmacSHA512 from 'crypto-js/hmac-sha512';
const hmac = hmacSHA512('what', 'key');
const str = hmac.toString();
console.log(str)

But how to implemnet hmac.update('what').update('what2')?