Sha-out sign not matching in Ogone

I’m trying to make a payment plugin for my webshop for Ogone ideal payments. I can make a payment, but when I return I cannot get the SHA-signs to match.

I have the following get request on return:

orderID=476&amount=90%2E82&PM=iDEAL&ACCEPTANCE=0000000000&STATUS=9&PAYID=43934127&NCERROR=0&BRAND=iDEAL&SHASIGN=5AB0A065BAA83C5D807249A66E661ACBB6709B8F

According to the documentation, I have to order the keys alphabetically and only hash those that are allowed.

These are the allowed keys:

['AAVADDRESS', 'AAVCHECK', 'AAVZIP', 'ACCEPTANCE', 'ALIAS', 'AMOUNT', 'BRAND', 'CARDNO', 'CCCTY', 'CN', 'COMPLUS', 'CURRENCY', 'CVCCHECK', 'DCC_COMMPERCENTAGE', 'DCC_CONVAMOUNT', 'DCC_CONVCCY', 'DCC_EXCHRATE', 'DCC_EXCHRATESOURCE', 'DCC_EXCHRATETS', 'DCC_INDICATOR', 'DCC_MARGINPERCENTAGE', 'DCC_VALIDHOUS', 'DIGESTCARDNO', 'ECI', 'ED', 'ENCCARDNO', 'IP', 'IPCTY', 'NBREMAILUSAGE', 'NBRIPUSAGE', 'NBRIPUSAGE_ALLTX', 'NBRUSAGE', 'NCERROR', 'ORDERID', 'PAYID', 'PM', 'SCO_CATEGORY', 'SCORING', 'STATUS', 'TRXDATE', 'VC'];

I made this method to make the hash:

/**
 * @return string
 */
protected function getShaOutSign()
{
    $hash = '';
    $values = Input::all();
    $values = array_change_key_case($values, CASE_UPPER);
    ksort($values);

    foreach ($values as $key => $value) {
        if (in_array($key, $this->shaOut)) {

            if(!empty($value))
            {
                $hash .= $key . '=' . $values[$key] . $this->settings->shaout;
            }
        }
    }

    return  strtoupper(sha1($hash));
}

I’m 100% sure the SHA out key is correct.

The string it makes before I do SHA1:

ACCEPTANCE=0000000000abcDEFghj1234560987654AMOUNT=90.82abcDEFghj1234560987654BRAND=iDEALabcDEFghj1234560987654ORDERID=476abcDEFghj1234560987654PAYID=43934127abcDEFghj1234560987654PM=iDEALabcDEFghj1234560987654STATUS=9abcDEFghj1234560987654

And the final hash I get is:

68E459CB933E04B582A5D564CE6F591D5819B7F1

No matter what I try, I just can’t get it to match it with the one in the $_GET request.

My sha-out key: abcDEFghj1234560987654

What can I try next?

Answer

The sha out calculation is wrong. This is the code I use in my projects to calculate it, $sha_parms is the full response of Ogone. So $_POST or $_GET

            /**
            * Function to calculate the sha that is received from Ogone
            */
            public function getShaOut($sha_parms, $sha_out = null) {
                    $sha_out = $sha_out ?: self::PASS_PHRASE_OUT;
                    $sha_parms = $this->ogoneSort($sha_parms);

                    $sha_string = '';
                    foreach ($sha_parms as $key => $value) {
                            if ($key != 'SHASIGN' && $value != '') {
                                    $sha_string .= $key . '=' . $value . $sha_out;
                            }
                    }

                    //return($sha_string);
                    return strtoupper(sha1($sha_string));
            }              

            /**
            *
            *
            **/
            private function ogoneSort($array) {
                    $arrayToSort = array();
                    $origArray = array();
                    foreach ($array as $key => $value) {
                            $arrayToSort[strtolower($key)] = $value;
                            //stores the original value in an array
                            $origArray[strtolower($key)] = $key;
                    }

                    ksort($arrayToSort);

                    $sortedArray = array();
                    foreach($arrayToSort as $key => $value) {
                            //switch the lowercase keys back to their originals
                            $key = strtoupper($origArray[$key]);
                            $sortedArray[$key] = $value;
                    }

                    return $sortedArray;
            }