"1101",
"VK_VERSION" => "008",
"VK_SND_ID" => "HP",
"VK_REC_ID" => "uid100010",
"VK_STAMP" => "209",
"VK_T_NO" => "12895",
"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" => "2095",
"VK_MSG" => "121631ff4388c72b63761843a5905171",
"VK_T_DATE" => "23.09.2020",
"VK_ENCODING" => "UTF-8",
"VK_LANG" => "LIT",
"VK_MAC" => "qzsMKk1iraJbG8OD8wCMb7b7gUHqPYkYHZbShPQBDHJySw6VExKrAFdtWba1m8EU1RFtg156vuD8EYf6zl99G1bFvvxrK6wmPKX9Js60xNbAmw6EZYuf3/S9Qdxtedg3ppXDMcqx6zKN9S8XCswpyL2QGHq00luTeyqNEjSNFBGCMgUkDV7sUc6sBaob5VJGc7DF6rdSltXsrrWfrVWSa9KlwtzF8gFh3EdaS+ctM/im9PrkphIgahFx8dg3QIsv90XbDrvlAlby2ONHgSzi0omW50nN0Sd4aBDiZAxqnOdM6Te4aOMf4aEkzJRY2nJgx+cTuKcCEpX4QWYT1C2WXA==",
"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) . $fields["VK_STAMP"] . /* 209 */
str_pad (mb_strlen($fields["VK_T_NO"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_NO"] . /* 12895 */
str_pad (mb_strlen($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) . $fields["VK_REF"] . /* 2095 */
str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_MSG"] . /* 121631ff4388c72b63761843a5905171 */
str_pad (mb_strlen($fields["VK_T_DATE"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_DATE"]; /* 23.09.2020 */
/* $data = "0041101003008002HP009uid100010003209005128950040.01003EUR020LT657300010135270430019BIGBANK AS FILIALAS020LT121000011101001000019Vardenis Pavardenis0042095032121631ff4388c72b63761843a590517101023.09.2020"; */
// STEP 4. Verify the data with RSA-SHA1
// =====================================
if (openssl_verify ($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: