Callback and Redirect URL

Redirect URL (redirect_url)

Merchant/partner can set redirect_url during sending payment POST parameters. Redirect URL is browser to browser communication. After the bank transaction from the browser. The user will be redirected to this URL, merchant can set their own page. Information will be posted (POST method) to the URL. By default user will be redirected to SecurePay status page if the redirect URL is nil.

Callback URL (callback_url)

Merchant/partner can set callback_url during sending payment POST parameters. Callback URL is server to server communication. SecurePay server sends the transaction status to the merchant callback server (based on callback URL). It's very important, if error occur on the redirect URL.

Parameter from redirect and callback URL

This parameters will be sent to the URL by using POST method.

Checksum is use to verify message that are received by SecurePay Platform for redirect and callback. The verification will be done on the merchant/partner side. (the string also need to include uid).

Guide to generate checksum

Compulsory to use function that automatically sort the key and later replace with the value. Params will keep updating time to time.

Example 

<?php
//Compulsory to use function that automatically sort the key and later replace with the value. Params will keep updating time to time.

private $checksum_token;

public function verify(Request $request)
    {

        $data = $request->all();
        ksort($data);

        $checksum = $data['checksum'];
        unset($data['checksum']);

        $string = implode('|', $data);

        $sign = hash_hmac('sha256', $string, $this->checksum_token);

        return ($sign == $checksum);
    }
?>
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