HMAC signatures for API requests in different languages

signed_urls.js

var crypto = require('crypto');

var message = 'GET /foo/bar?arg1=aaaa&arg2=bbbb';
var secret = 'secret';

crypto.createHmac('sha256', secret).update(message).digest('base64');
// '82LHSJc4h/5BpLrBcGyWjTIiLuJTBYkgyGAb7cNmXew='

signed_urls.php

<?php

$message = 'GET /foo/bar?arg1=aaaa&arg2=bbbb';
$secret = 'secret';

$signature = base64_encode(hash_hmac('sha256', $message, $secret, true));

echo $signature;
# 82LHSJc4h/5BpLrBcGyWjTIiLuJTBYkgyGAb7cNmXew=

signed_urls.py

import hmac
import hashlib

message = 'GET /foo/bar?arg1=aaaa&arg2=bbbb'
secret = 'secret'

hmac.new(key=secret, msg=message, digestmod=hashlib.sha256).digest().encode('base64').strip()
# '82LHSJc4h/5BpLrBcGyWjTIiLuJTBYkgyGAb7cNmXew='