"1002",
        "VK_VERSION"     => "008",
        "VK_SND_ID"      => "uid100010",
        "VK_STAMP"       => "2155",
        "VK_AMOUNT"      => "0.01",
        "VK_CURR"        => "EUR",
        "VK_ACC"         => "LT657300010135270430",
        "VK_NAME"        => "BIGBANK AS FILIALAS",
        "VK_REF"         => "21555",
        "VK_MSG"         => "e93f61b5a6348d3daf47fcfd284ca59a",
        "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) . $fields["VK_STAMP"] .      /* 2155 */
        str_pad (mb_strlen($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) . $fields["VK_REF"] .        /* 21555 */
        str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"),     3, "0", STR_PAD_LEFT) . $fields["VK_MSG"];         /* e93f61b5a6348d3daf47fcfd284ca59a */
/* $data = "0041002003008009uid10001000421550040.01003EUR00521555032e93f61b5a6348d3daf47fcfd284ca59a"; */
// STEP 4. Sign the data with RSA-SHA1 to generate MAC code
// ========================================================
openssl_sign ($data, $signature, $private_key, OPENSSL_ALGO_SHA1);
/* Y9LEicm9S4qq/YfgvmvmsO4eiCBTI2pBJwMza2OvmLFwt6uQBK6wKczKCedEnEtyQPUbsQOOsFI27YI1RZfw9XJk1PuWOEFKfcMPJOEvM8Qe7rKK2Dsawk/VMjVN/lrPa6JEnxC5a2Z0wrMDZDXvjxt5eHH/3Y9xgpR5In044ZL2SjilZOR1XSjaK7mCtm2MJu5UcViiUNJYRoOlgrLiCF5efHofVYN6VbbkgqQGFiK0mGuph/BH4o3WSf8gVWYK3J/m10a0JkSeJlFLKWxbz42rqgCcb/6hou1bBut/ZGs0bFquEpzIOcEQG9usmZgUniQpNou/fVwAxV5iR6cMjQ== */
$fields["VK_MAC"] = base64_encode($signature);
// STEP 5. Generate POST form with payment data that will be sent to the bank
// ==========================================================================
?>
        
        Makse teostamise näidisrakendus "Swedbank Lithuania"