"1111", "VK_VERSION" => "008", "VK_SND_ID" => "HP", "VK_REC_ID" => "uid100052", "VK_STAMP" => "179", "VK_T_NO" => "10070", "VK_AMOUNT" => "15.00", "VK_CURR" => "EUR", "VK_REC_ACC" => "", "VK_REC_NAME" => "", "VK_SND_ACC" => "EE152200221234567897", "VK_SND_NAME" => "Tõõger Leõpäöld", "VK_REF" => "1795", "VK_MSG" => "Vaheajatellimus 2110070004 11.10.2021 12:00", "VK_T_DATETIME" => "2021-10-07T19:52:17+0000", "VK_ENCODING" => "UTF-8", "VK_LANG" => "EST", "VK_MAC" => "pbwmZCvEFmge3cNoNuqYjaV8VNCghYuJjdNUNJnFnVHVNYZpkPjITaV7dnBjGOgoU8ZOgHkMV/48SR8KdmkNdBojuUx89xO5MCY3cdpkLxwN2+Iljkp/y5tCh9KlfDqSZtWrXvu1BXsdyQcx1BwiUw2iOyISrFyPHv17XKNg/mMboun0fcGXxBu8F/mGA+NLygopxYOK5U6db46D9VZeUBXpLmzAZg4qiFlNaKZljbjHFxu8Pqs5fjZBchVhFq7ZuP/OgJzMh/XeED2C/FqTe6ot3edNnqSrogGXYBVQkLHHJXTZDHe4cjdiFaZCD2WTaCsovnIWm5SM0S8sOkTk2g==", "VK_AUTO" => "N" ); // STEP 3. Generate data to be verified // ==================================== // Data to be verified 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) . $fields["VK_SERVICE"] . /* 1111 */ str_pad (mb_strlen($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) . $fields["VK_SND_ID"] . /* HP */ str_pad (mb_strlen($fields["VK_REC_ID"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REC_ID"] . /* uid100052 */ str_pad (mb_strlen($fields["VK_STAMP"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_STAMP"] . /* 179 */ str_pad (mb_strlen($fields["VK_T_NO"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_NO"] . /* 10070 */ str_pad (mb_strlen($fields["VK_AMOUNT"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_AMOUNT"] . /* 15.00 */ str_pad (mb_strlen($fields["VK_CURR"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_CURR"] . /* EUR */ str_pad (mb_strlen($fields["VK_REC_ACC"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REC_ACC"] . /* */ str_pad (mb_strlen($fields["VK_REC_NAME"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REC_NAME"] . /* */ str_pad (mb_strlen($fields["VK_SND_ACC"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_SND_ACC"] . /* EE152200221234567897 */ str_pad (mb_strlen($fields["VK_SND_NAME"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_SND_NAME"] . /* Tõõger Leõpäöld */ str_pad (mb_strlen($fields["VK_REF"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REF"] . /* 1795 */ str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_MSG"] . /* Vaheajatellimus 2110070004 11.10.2021 12:00 */ str_pad (mb_strlen($fields["VK_T_DATETIME"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_DATETIME"]; /* 2021-10-07T19:52:17+0000 */ /* $data = "0041111003008002HP009uid1000520031790051007000515.00003EUR000000020EE152200221234567897015Tõõger Leõpäöld0041795043Vaheajatellimus 2110070004 11.10.2021 12:000242021-10-07T19:52:17+0000"; */ // STEP 4. Verify the data with RSA-SHA1 // ===================================== if (openssl_verify ($data, base64_decode($fields["VK_MAC"]), $public_key) !== 1) { $signatureVerified = false; }else{ $signatureVerified = true; } // STEP 5. Display output of the received payment // ============================================== ?>

Payment results

Payment:

Signature: