"1002",
        "VK_VERSION"     => "008",
        "VK_SND_ID"      => "uid100010",
        "VK_STAMP"       => "2235",
        "VK_AMOUNT"      => "0.01",
        "VK_CURR"        => "EUR",
        "VK_ACC"         => "LT657300010135270430",
        "VK_NAME"        => "BIGBANK AS FILIALAS",
        "VK_REF"         => "22350",
        "VK_MSG"         => "a3c511eba598dd8543cf8772679a354d",
        "VK_RETURN"      => "https://dsm-banklink-frontend-lt-dev.dca.origin.big.local/r",
        "VK_CANCEL"      => "https://dsm-banklink-frontend-lt-dev.dca.origin.big.local/r",
        "VK_LANG"        => "LIT",
        "VK_ENCODING"    => "UTF-8"
);
// STEP 3. Generate data to be signed
// ==================================
// Data to be signed 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) . $fields["VK_SERVICE"] .    /* 1002 */
        str_pad (mb_strlen($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) . $fields["VK_SND_ID"] .     /* uid100010 */
        str_pad (mb_strlen($fields["VK_STAMP"], "UTF-8"),   3, "0", STR_PAD_LEFT) . $fields["VK_STAMP"] .      /* 2235 */
        str_pad (mb_strlen($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_REF"], "UTF-8"),     3, "0", STR_PAD_LEFT) . $fields["VK_REF"] .        /* 22350 */
        str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"),     3, "0", STR_PAD_LEFT) . $fields["VK_MSG"];         /* a3c511eba598dd8543cf8772679a354d */
/* $data = "0041002003008009uid10001000422350040.01003EUR00522350032a3c511eba598dd8543cf8772679a354d"; */
// STEP 4. Sign the data with RSA-SHA1 to generate MAC code
// ========================================================
openssl_sign ($data, $signature, $private_key, OPENSSL_ALGO_SHA1);
/* hOOFzQjdpBgR+vSAlk1oTHmPVvuOMnI/MzjJTEQtAI2KNt5m2yFGG2BwVVevrN0hHM4/cauKJoQm2AcXH7CK4p9q22kn53wHidsKIMuM8T4JYTBVYqlc5mjvODpTj+caJEbxjlfCa5i3e9c7AbupYlyXf/E6nXOP+f1CiOPLkSVKreaLYNUTnALO9/LTaaXCrzDlBQSGlgZw9XZCxec1V3fG3KoBSOh9X1dFGA2zCeLxqsup6ufMV1jTHtfiLRYaurTuUFEwndysb3/e/CdK6vQ+Yhoq/K+HJOHqUYn42+quO4Cmgf8dIt1J/dYOj1ilwfSHuBq5NhIljcEBnEd1SA== */
$fields["VK_MAC"] = base64_encode($signature);
// STEP 5. Generate POST form with payment data that will be sent to the bank
// ==========================================================================
?>
        
        Makse teostamise näidisrakendus "Swedbank Lithuania"