"1101",
"VK_VERSION" => "008",
"VK_SND_ID" => "HP",
"VK_REC_ID" => "uid100010",
"VK_STAMP" => "1866",
"VK_T_NO" => "11865",
"VK_AMOUNT" => "0.01",
"VK_CURR" => "EUR",
"VK_REC_ACC" => "LT657300010135270430",
"VK_REC_NAME" => "BIGBANK AS FILIALAS",
"VK_SND_ACC" => "LT121000011101001000",
"VK_SND_NAME" => "Vaidotas Juknys",
"VK_REF" => "18665",
"VK_MSG" => "efa87c0188c548635badaa5be8a8f1af",
"VK_T_DATE" => "10.04.2020",
"VK_ENCODING" => "UTF-8",
"VK_LANG" => "LIT",
"VK_MAC" => "ZR343tBPUC7bYi8txqk7mpHBtk89sBQZ6BVSTdbFGaIgOc75BXeNiXUBCj1u8zOgyAOnolWqhqLYA23zl8yQUKevdhJ6prT+zoON8K4n09FitS1jK+s6b/F7Nf1G2HFwK609E6mczf2+bykGlE5VLvWBG4vkYT163UGoZf22FeBG8r4yKsDZNROMG0LXzcaH5vsnAG+jOdoEjTstPwuwvElyQwqeckzbqGiY1nr3hF9Fxdpk71tpNd+0VsKNqVaFSeQuYWYZVsKFbL5jcGR+VlBPniqxHpISS18ljjHGtLvhqKVrfJ9tFHFYiTeZd8YRCjuRvzWbmexoSZDyQNHzog==",
"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) . $fields["VK_STAMP"] . /* 1866 */
str_pad (mb_strlen($fields["VK_T_NO"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_NO"] . /* 11865 */
str_pad (mb_strlen($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) . $fields["VK_SND_NAME"] . /* Vaidotas Juknys */
str_pad (mb_strlen($fields["VK_REF"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REF"] . /* 18665 */
str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_MSG"] . /* efa87c0188c548635badaa5be8a8f1af */
str_pad (mb_strlen($fields["VK_T_DATE"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_DATE"]; /* 10.04.2020 */
/* $data = "0041101003008002HP009uid1000100041866005118650040.01003EUR020LT657300010135270430019BIGBANK AS FILIALAS020LT121000011101001000015Vaidotas Juknys00518665032efa87c0188c548635badaa5be8a8f1af01010.04.2020"; */
// STEP 4. Verify the data with RSA-SHA1
// =====================================
if (openssl_verify ($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: