"1012", "VK_VERSION" => "008", "VK_SND_ID" => "uid100052", "VK_STAMP" => "66363", "VK_AMOUNT" => "16.2", "VK_CURR" => "EUR", "VK_REF" => "663638", "VK_MSG" => "Order nr. 66363", "VK_RETURN" => "https://vm-backend.dev.elkdata.ee/payment/callback/order/bank", "VK_CANCEL" => "https://vm-backend.dev.elkdata.ee/payment/callback/order/bank", "VK_DATETIME" => "2022-05-10T20:41:13+0300", "VK_LANG" => "EST", "VK_ACC" => "EE171010123456789017", "VK_NAME" => "Veebimajutus", "VK_ENCODING" => "UTF-8" ); // STEP 3. Generate data to be signed // ================================== // Data to be signed is in the form of XXXYYYYY where XXX is 3 char // zero padded length of the value and YYY the value itself // NB! Swedbank expects symbol count, not byte count with UTF-8, // so use `mb_strlen` instead of `strlen` to detect the length of a string $data = str_pad (mb_strlen($fields["VK_SERVICE"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_SERVICE"] . /* 1012 */ str_pad (mb_strlen($fields["VK_VERSION"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_VERSION"] . /* 008 */ str_pad (mb_strlen($fields["VK_SND_ID"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_SND_ID"] . /* uid100052 */ str_pad (mb_strlen($fields["VK_STAMP"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_STAMP"] . /* 66363 */ str_pad (mb_strlen($fields["VK_AMOUNT"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_AMOUNT"] . /* 16.2 */ str_pad (mb_strlen($fields["VK_CURR"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_CURR"] . /* EUR */ str_pad (mb_strlen($fields["VK_REF"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REF"] . /* 663638 */ str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_MSG"] . /* Order nr. 66363 */ str_pad (mb_strlen($fields["VK_RETURN"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_RETURN"] . /* https://vm-backend.dev.elkdata.ee/payment/callback/order/bank */ str_pad (mb_strlen($fields["VK_CANCEL"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_CANCEL"] . /* https://vm-backend.dev.elkdata.ee/payment/callback/order/bank */ str_pad (mb_strlen($fields["VK_DATETIME"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_DATETIME"]; /* 2022-05-10T20:41:13+0300 */ /* $data = "0041012003008009uid1000520056636300416.2003EUR006663638015Order nr. 66363061https://vm-backend.dev.elkdata.ee/payment/callback/order/bank061https://vm-backend.dev.elkdata.ee/payment/callback/order/bank0242022-05-10T20:41:13+0300"; */ // STEP 4. Sign the data with RSA-SHA1 to generate MAC code // ======================================================== openssl_sign ($data, $signature, $private_key, OPENSSL_ALGO_SHA1); /* INIr2lcJBV1fbyCKQQ0Ax+EZT5or1/f8MF5KcuVfNSBwg0MvXKbI7F2W4Rqd9Cz0sin8Fzvxr48GLQBLS85mT91vyGnQWtg7O+bev1ub43S9mPU6Xc3Rhj6mrSCW7mwois0uQTml0WqGH1MiH+7KDEMFUm7ezztBvIebDR5Gk8fQb8EaLwy/Qgv1NJhWzX/bCg7uEuj7IqGT6RLM3gY1C0i9lAf+m5b6t5spj2EtVNe0GoIwrM7J/lZHAA5qIp1cJdHByeLE5kE2TVyGbxIaNN1ZrFL3bmJSEW9fPGyC2RGMw/TWv3xejAKB29a2doVCol5lg8+DEPprNcB4mfsOnw== */ $fields["VK_MAC"] = base64_encode($signature); // STEP 5. Generate POST form with payment data that will be sent to the bank // ========================================================================== ?>

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