如何在节点js中使用hash_hmac函数

Question

Recently I have used same code on PHP and it's working fine but when I tried Node Js, it's not working for me. Please check once:

PHP

$signature = $ACCID . "POST" . strtolower(urlencode($url)).$requestContentBase64String; 
$hmacsignature = base64_encode(hash_hmac("sha256", $signature, base64_decode($APIKey), true)); 

NODE CODE :

var signature = ACCID+"POST"+encodeURI(url).toLowerCase()+requestContentBase64String; 
var hmacsignature = base64.encode(crypto.createHmac('sha256', APIKey).update(signature).digest('base64'))

Please check what's wrong in this code.

Answer 1

Your second line has two mistakes:

1. PHP APIKey is BASE64_DECODE(APIKey) while in Node.js code it is just APIKey
2. PHP hmacsignature is BASE64(HEX(HMAC)) while in Node.js code it is BASE64(BASE64(HMAC))

Try this:

var hmacsignature = crypto.createHmac('sha256', Buffer.from(APIKey, 'base64')).update(signature).digest('base64')