Code for managing Binance authentication with Postman

binance-postman-auth.js

let secret = pm.variables.get('secret-key'),
    timestamp = Date.now(),
    query = pm.request.url.query
        .filter(x => !x.disabled && x.key !== 'signature')
        .map(x => {
            if (x.key === 'timestamp') {
                return `${x.key}=${timestamp}`;
            }
            else {
                return `${x.key}=${x.value}`;
            }
        })
        .join('&'),
    signature = CryptoJS.HmacSHA256(query, secret).toString(CryptoJS.enc.Hex);

pm.globals.set('timestamp', timestamp);
pm.globals.set('signature', signature);