"1911", "VK_VERSION" => "008", "VK_SND_ID" => "EYP", "VK_REC_ID" => "uid100036", "VK_STAMP" => "81", "VK_REF" => "819", "VK_MSG" => "Vaheajatellimus 2102010013 17.02.2021 12:00", "VK_ENCODING" => "UTF-8", "VK_LANG" => "EST", "VK_MAC" => "MbTcGiILcyaENazjAePPInVD7bctAE//SddrXvaUemfW9TEdmVjfjYib9U2me4tR4v7AT5yjoW569Fn9m7DxBWMxCQFL5UyJzGWSxx+zXwvFOGx613dJTBQNXkJLoX7pF064wTmpj6wOknt+OS0ghiyBhyTG4vfUz9iRSPzXQESForYLZSbZXRD/upQWgPHyqeiTHrlnr++mOmzW8FyF8O+GplVXkPJG5XHFWlhQpx9HwpiifYDDYompZE/g+/txg0ORYQNKNehKoEIiC/iYbVnldovGOnafd4B5khDxGasaiPV62rYtwzjwAxCY6p82Q7etdZI/HJVJg1G+Gigj+A==", "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! SEB 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) . $fields["VK_SERVICE"] . /* 1911 */ str_pad (mb_strlen($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) . $fields["VK_SND_ID"] . /* EYP */ str_pad (mb_strlen($fields["VK_REC_ID"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REC_ID"] . /* uid100036 */ str_pad (mb_strlen($fields["VK_STAMP"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_STAMP"] . /* 81 */ str_pad (mb_strlen($fields["VK_REF"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_REF"] . /* 819 */ str_pad (mb_strlen($fields["VK_MSG"], "UTF-8"), 3, "0", STR_PAD_LEFT) . $fields["VK_MSG"]; /* Vaheajatellimus 2102010013 17.02.2021 12:00 */ /* $data = "0041911003008003EYP009uid10003600281003819043Vaheajatellimus 2102010013 17.02.2021 12:00"; */ // STEP 4. Verify the data with RSA-SHA1 // ===================================== if (openssl_verify ($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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