"1101", "VK_VERSION" => "008", "VK_SND_ID" => "HP", "VK_REC_ID" => "uid100010", "VK_STAMP" => "2529", "VK_T_NO" => "12627", "VK_AMOUNT" => "0.01", "VK_CURR" => "EUR", "VK_REC_ACC" => "LT657300010135270430", "VK_REC_NAME" => "BIGBANK AS FILIALAS", "VK_SND_ACC" => "LT057044060007887175", "VK_SND_NAME" => "Mikko Perenimi", "VK_REF" => "25292", "VK_MSG" => "d5432cec92d81f0ca3fc7ab317367169", "VK_T_DATE" => "27.08.2020", "VK_ENCODING" => "UTF-8", "VK_LANG" => "LIT", "VK_MAC" => "Qa0cy4sJYBP/K+Rzk6Uek7rMcxbYrZ1T5TC+m60LVYelM50KUebI0mJHilxfvq06YzY+VbvqP+fqhkLE5nB3a2N3ncqr+WtpumJQE2PYA1FVj8zLC4h4b/o+N9D5W4bVTOuVuWgBxG3kg9er10VmFrL7XdS64CZfd+BRuIhq7R9txDGlnkVb5G0AK6il+OIn0GRtzDlPxtl49Xa4Joi/Qu0u9r//NGkM6JAI0dt5tiDTpDYUIvcd1MImn0EVIp9Qof/ZAsO5ZSiTJY49RkFPaGxseL5xv+ioxYIkPAGl6mfE/Gob4jbgVZN5wgy7vUd7RNawqrr5hislIKAAXjr/8g==", "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) . $fields["VK_STAMP"] . /* 2529 */ str_pad (mb_strlen($fields["VK_T_NO"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_NO"] . /* 12627 */ str_pad (mb_strlen($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) . $fields["VK_SND_ACC"] . /* LT057044060007887175 */ str_pad (mb_strlen($fields["VK_SND_NAME"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_SND_NAME"] . /* Mikko Perenimi */ str_pad (mb_strlen($fields["VK_REF"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REF"] . /* 25292 */ str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_MSG"] . /* d5432cec92d81f0ca3fc7ab317367169 */ str_pad (mb_strlen($fields["VK_T_DATE"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_T_DATE"]; /* 27.08.2020 */ /* $data = "0041101003008002HP009uid1000100042529005126270040.01003EUR020LT657300010135270430019BIGBANK AS FILIALAS020LT057044060007887175014Mikko Perenimi00525292032d5432cec92d81f0ca3fc7ab31736716901027.08.2020"; */ // STEP 4. Verify the data with RSA-SHA1 // ===================================== if (openssl_verify ($data, base64_decode($fields["VK_MAC"]), $public_key) !== 1) { $signatureVerified = false; }else{ $signatureVerified = true; } // STEP 5. Display output of the received payment // ============================================== ?>

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