"1101",
"VK_VERSION" => "008",
"VK_SND_ID" => "HP",
"VK_REC_ID" => "uid100010",
"VK_STAMP" => "3215",
"VK_T_NO" => "13222",
"VK_AMOUNT" => "0.01",
"VK_CURR" => "EUR",
"VK_REC_ACC" => "LT657300010135270430",
"VK_REC_NAME" => "BIGBANK AS FILIALAS",
"VK_SND_ACC" => "LT121000011101001000",
"VK_SND_NAME" => "Tomas Klimavičius",
"VK_REF" => "32159",
"VK_MSG" => "f7b1a7f44da617c73bba0c65dfd6fc38",
"VK_T_DATE" => "27.11.2020",
"VK_ENCODING" => "UTF-8",
"VK_LANG" => "LIT",
"VK_MAC" => "VNqfO5L6j7zpKoWVEwmwVe1GHPe9mi1KaJJhnRj4Yw6uYHtUHSOKM0PELR27CKyUDuxLepqclabiIxR4To+YhSkIiPbBsD6CzTg3lU35SF1r502KgKQpxC+rz50bh0jUxIvw4s2Us28FtkW83qGURAgCPivZE/uUa/krZpkNojFowtEJ/QSHQ29ITiugF/VYQ5ezy9Zko1o9LdMhWVYFzjTwhuPge2oMLsoVvwG2YYH17+lEV7xrs+q+vWGi7ECGjlnI7NXSJFgB64Bk33zTWSwSP5mZa9WJoo4Of8yvjuPCLCLh7z8jJ/bkhuaAVekBiJTRf+tm61j0spQYzF65Jg==",
"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) . $fields["VK_STAMP"] . /* 3215 */
str_pad (mb_strlen($fields["VK_T_NO"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_NO"] . /* 13222 */
str_pad (mb_strlen($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) . $fields["VK_SND_NAME"] . /* Tomas Klimavičius */
str_pad (mb_strlen($fields["VK_REF"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REF"] . /* 32159 */
str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_MSG"] . /* f7b1a7f44da617c73bba0c65dfd6fc38 */
str_pad (mb_strlen($fields["VK_T_DATE"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_DATE"]; /* 27.11.2020 */
/* $data = "0041101003008002HP009uid1000100043215005132220040.01003EUR020LT657300010135270430019BIGBANK AS FILIALAS020LT121000011101001000017Tomas Klimavičius00532159032f7b1a7f44da617c73bba0c65dfd6fc3801027.11.2020"; */
// STEP 4. Verify the data with RSA-SHA1
// =====================================
if (openssl_verify ($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: