"1111",
"VK_VERSION" => "008",
"VK_SND_ID" => "HP",
"VK_REC_ID" => "uid100049",
"VK_STAMP" => "72735",
"VK_T_NO" => "10017",
"VK_AMOUNT" => "65.40",
"VK_CURR" => "EUR",
"VK_REC_ACC" => "",
"VK_REC_NAME" => "",
"VK_SND_ACC" => "EE152200221234567897",
"VK_SND_NAME" => "Tõõger Leõpäöld",
"VK_REF" => "727354",
"VK_MSG" => "Tellimuse 72735 makse",
"VK_T_DATETIME" => "2020-10-30T09:17:31+0000",
"VK_ENCODING" => "utf-8",
"VK_LANG" => "EST",
"VK_MAC" => "KlIo7uY2Zu6Qryq7GkmDYbkluVJ8l+/kg8ihHJC2hFG0PcV86chzIWd7r6x0PZGU2yVQwDQ7u6cN6utPL8Wr592JN3Dm89NTeroF7fr5/QbDyRJOHN1FX7tBwRJJgGVQMXcplSoVA+xUDPfsxZZniMFeg04NBJvFVuIpCruEp2bLDBMtO2sEv3WX8Kf2gHkiVgmuNF4ir/3lL1enfoUz6KepEbBZpSWhdq6nOjXf/zW3Jpain025WT+BgFdYjh41Y/vLKsc+aQJe642Dx5SqE6zFsRiWrPug3/9uSvheD5gTdXT/bhkMoLI+IQXYYUKLSpuVKcmrYilVbbhuH8eARA==",
"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) . $fields["VK_REC_ID"] . /* uid100049 */
str_pad (mb_strlen($fields["VK_STAMP"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_STAMP"] . /* 72735 */
str_pad (mb_strlen($fields["VK_T_NO"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_NO"] . /* 10017 */
str_pad (mb_strlen($fields["VK_AMOUNT"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_AMOUNT"] . /* 65.40 */
str_pad (mb_strlen($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) . $fields["VK_REF"] . /* 727354 */
str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_MSG"] . /* Tellimuse 72735 makse */
str_pad (mb_strlen($fields["VK_T_DATETIME"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_DATETIME"]; /* 2020-10-30T09:17:31+0000 */
/* $data = "0041111003008002HP009uid100049005727350051001700565.40003EUR000000020EE152200221234567897015Tõõger Leõpäöld006727354021Tellimuse 72735 makse0242020-10-30T09:17:31+0000"; */
// STEP 4. Verify the data with RSA-SHA1
// =====================================
if (openssl_verify ($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: