Unexpected Signature while obtaining user session token - connectycube

Question

I am using Connecty Cube and following the documentation to get a user session token, however the response is
Client error: POST https://api.connectycube.com/session resulted in a 422 Unprocessable Entity response:
{"errors":["Unexpected signature"]}
I am using the below code to get the session token.
use GuzzleHttp\Psr7;
use GuzzleHttp\Client;
use GuzzleHttp\Exception\ClientException;
use GuzzleHttp\Exception\TransferException;
$client = new Client();
// Create Connecty Cube Session
$application_id = env('CUBE_APPLICATION_ID');
$auth_key = env('CUBE_APPLICATION_KEY');
$timestamp = time();
$nonce = substr($timestamp, 0, 4);
$response = $client->request('POST', 'https://api.connectycube.com/session', [
'form_params' => [
'application_id' => $application_id,
'auth_key' => $auth_key,
'timestamp' => $timestamp,
'nonce' => $nonce,
'signature' => hash_hmac('sha1',
http_build_query([
'application_id' => $application_id,
'auth_key' => $auth_key,
'nonce' => $nonce,
'timestamp' => $timestamp,
]),
env('CUBE_APPLICATION_SECRET')
),
"user" => [
"email" => <email address>,
"password" => <password>
]
]
]);
$contents = json_decode($response->getBody()->getContents(), true);
var_dump($contents);
Please help me to figure out where I am going wrong. Thank You!

Answer 1

// Application credentials
DEFINE('APPLICATION_ID', 1204);
DEFINE('AUTH_KEY', "HhBrEq4BRgT4R8S");
DEFINE('AUTH_SECRET', "TkpdsDSSWyD6Sgb");
// endpoints
DEFINE('CB_API_ENDPOINT', "https://api.connectycube.com");
DEFINE('CB_PATH_SESSION', "session.json");
// Generate signature
$nonce = rand();
$timestamp = time(); // time() method must return current timestamp in UTC but seems like hi is return timestamp in current time zone
$signature_string = "application_id=".APPLICATION_ID."&auth_key=".AUTH_KEY."&nonce=".$nonce."&timestamp=".$timestamp;
echo "stringForSignature: " . $signature_string . "<br><br>";
$signature = hash_hmac('sha1', $signature_string , AUTH_SECRET);
// Build post body
$post_body = http_build_query(array(
'application_id' => APPLICATION_ID,
'auth_key' => AUTH_KEY,
'timestamp' => $timestamp,
'nonce' => $nonce,
'signature' => $signature
));
// $post_body = "application_id=" . APPLICATION_ID . "&auth_key=" . AUTH_KEY . "&timestamp=" . $timestamp . "&nonce=" . $nonce . "&signature=" . $signature;
echo "postBody: " . $post_body . "<br><br>";
// Configure cURL
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, CB_API_ENDPOINT . '/' . CB_PATH_SESSION); // Full path is - https://api.connectycube.com/session.json
curl_setopt($curl, CURLOPT_POST, true); // Use POST
curl_setopt($curl, CURLOPT_POSTFIELDS, $post_body); // Setup post body
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); // Receive server response
// Execute request and read responce
$responce = curl_exec($curl);
// Check errors
if ($responce) {
echo $responce . "\n";
} else {
$error = curl_error($curl). '(' .curl_errno($curl). ')';
echo $error . "\n";
}
// Close connection
curl_close($curl);