"1101",
"VK_VERSION" => "008",
"VK_SND_ID" => "HP",
"VK_REC_ID" => "uid100010",
"VK_STAMP" => "2439",
"VK_T_NO" => "12499",
"VK_AMOUNT" => "0.01",
"VK_CURR" => "EUR",
"VK_REC_ACC" => "LT657300010135270430",
"VK_REC_NAME" => "BIGBANK AS FILIALAS",
"VK_SND_ACC" => "LT121000011101001000",
"VK_SND_NAME" => "Vardenis Pavardenis",
"VK_REF" => "24390",
"VK_MSG" => "c6d20aaa523055fe813e55ce054730c2",
"VK_T_DATE" => "23.07.2020",
"VK_ENCODING" => "UTF-8",
"VK_LANG" => "LIT",
"VK_MAC" => "g/DDgjdFti7cok21oaJAsWF4/uRYlXjx9rQATKAT52OV617qVdHy/yh8KfJYclxhtrz9iOGzY+/ZsoDyXJKYIah2Aa4jch2YC7i94yxW0bRRxAtgG5O5gnxE1HtGS7YJVk5zHJ9z/GhqN9Yra51J1K0Z5waAka8T7FF2XmQiqFg0VGgg1Dn4awEnXkbmJTcIg5DVFaSLsQHvTfnsIb8m2YcBZdnVWnkkuoK4dc5JIK8yTqfKhPtHvzaJyARpUY1/awfGuwqUgvsfrTTDNck+OFHSOv+yEV91rBUDyZLPtxy/8a0hqku+ueIMgcWFH6q3vrHioSUW406WZNqVWvQckQ==",
"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 Lithuania 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) . $fields["VK_SERVICE"] . /* 1101 */
str_pad (mb_strlen($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) . $fields["VK_REC_ID"] . /* uid100010 */
str_pad (mb_strlen($fields["VK_STAMP"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_STAMP"] . /* 2439 */
str_pad (mb_strlen($fields["VK_T_NO"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_NO"] . /* 12499 */
str_pad (mb_strlen($fields["VK_AMOUNT"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_AMOUNT"] . /* 0.01 */
str_pad (mb_strlen($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) . $fields["VK_REC_ACC"] . /* LT657300010135270430 */
str_pad (mb_strlen($fields["VK_REC_NAME"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REC_NAME"] . /* BIGBANK AS FILIALAS */
str_pad (mb_strlen($fields["VK_SND_ACC"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_SND_ACC"] . /* LT121000011101001000 */
str_pad (mb_strlen($fields["VK_SND_NAME"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_SND_NAME"] . /* Vardenis Pavardenis */
str_pad (mb_strlen($fields["VK_REF"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REF"] . /* 24390 */
str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_MSG"] . /* c6d20aaa523055fe813e55ce054730c2 */
str_pad (mb_strlen($fields["VK_T_DATE"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_DATE"]; /* 23.07.2020 */
/* $data = "0041101003008002HP009uid1000100042439005124990040.01003EUR020LT657300010135270430019BIGBANK AS FILIALAS020LT121000011101001000019Vardenis Pavardenis00524390032c6d20aaa523055fe813e55ce054730c201023.07.2020"; */
// STEP 4. Verify the data with RSA-SHA1
// =====================================
if (openssl_verify ($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: