"1101",
"VK_VERSION" => "008",
"VK_SND_ID" => "HP",
"VK_REC_ID" => "uid100010",
"VK_STAMP" => "1896",
"VK_T_NO" => "11894",
"VK_AMOUNT" => "0.01",
"VK_CURR" => "EUR",
"VK_REC_ACC" => "LT657300010135270430",
"VK_REC_NAME" => "BIGBANK AS FILIALAS",
"VK_SND_ACC" => "LT121000011101001000",
"VK_SND_NAME" => "Ponas Dzonas",
"VK_REF" => "18966",
"VK_MSG" => "f086e2ef814cc0f4d6e5cef0804ed69d",
"VK_T_DATE" => "14.04.2020",
"VK_ENCODING" => "UTF-8",
"VK_LANG" => "LIT",
"VK_MAC" => "hgn6HWpF4WjPMC3z2XyzyCEJk4GLC1SNtFn6cWV7yh+qUMCLf4g2AQSraeG3I1R1QhXEbMVC1k4mwXFyFw99+V08PxZhnWClwWmqopz4nmVvK0EOuo76PS2Z7xCPBAL0emHictAhKG66LDgL/wCLzk/IRq2fX+lfB5RT0XKwInmG8QJ6KRbnK2Mr8zv0MqqI6CgGqVGh6FXVXXIboSz2Wf9hCopBv10y2+TyHM8Fug1RnZOW7KvBgJKT5RP8fREWYNg9r3Dn0F20uJMarcjAYOhcO7MzXvXSjACBitdv+udRpckFiAUGf5/duY6d6hcc+ExlKrJi1svZE7kdsy3+wA==",
"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) . $fields["VK_STAMP"] . /* 1896 */
str_pad (mb_strlen($fields["VK_T_NO"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_NO"] . /* 11894 */
str_pad (mb_strlen($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) . $fields["VK_SND_NAME"] . /* Ponas Dzonas */
str_pad (mb_strlen($fields["VK_REF"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REF"] . /* 18966 */
str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_MSG"] . /* f086e2ef814cc0f4d6e5cef0804ed69d */
str_pad (mb_strlen($fields["VK_T_DATE"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_DATE"]; /* 14.04.2020 */
/* $data = "0041101003008002HP009uid1000100041896005118940040.01003EUR020LT657300010135270430019BIGBANK AS FILIALAS020LT121000011101001000012Ponas Dzonas00518966032f086e2ef814cc0f4d6e5cef0804ed69d01014.04.2020"; */
// STEP 4. Verify the data with RSA-SHA1
// =====================================
if (openssl_verify ($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: