Online PHP editor | refs for vsa80

<?php function gen_random_string($len, $dict = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789") { $dict_len = strlen($dict); $res = ""; while ($len--) $res .= $dict[mt_rand(0, $dict_len - 1)]; return $res; } function enc_and_obfuscate($data, $enc_key) { $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB); $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); $enc_data = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $enc_key, $data, MCRYPT_MODE_ECB, $iv); $result = base64_encode($enc_data); $result = str_replace(array("+", "/", "="), array("-", "_", ""), $result); $result = mask_enc_key($result, $enc_key); return trim($result); } function enc_and_hash($data, $enc_key) { $data = serialize($data); $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC), MCRYPT_DEV_URANDOM); $enc_key = pack("H*", $enc_key); $sha_hash = hash_hmac("sha256", $data, substr(bin2hex($enc_key), -32)); $encryped_hash = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $enc_key, $data . $sha_hash, MCRYPT_MODE_CBC, $iv); $result = base64_encode($encryped_hash) . "|" . base64_encode($iv); return $result; } function dec_and_hash($data, $enc_key) { $data = explode("|", $data . "|"); $enc_data= base64_decode($data[0]); $iv = base64_decode($data[1]); if (strlen($iv) !== mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC)) { return false; } $enc_key = pack("H*", $enc_key); $result = trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $enc_key, $enc_data, MCRYPT_MODE_CBC, $iv)); $sha_hash_from_result = substr($result, -64); $result = substr($result, 0, -64); $sha_hash = hash_hmac("sha256", $result, substr(bin2hex($enc_key), -32)); if ($sha_hash !== $sha_hash_from_result) { return false; } $result = unserialize($result); return $result; } function decrypt_reply_data($data) { $vars = explode(":", $data); $count_vars = count($vars); $enc_key = ""; for ($i = 1; $i < $count_vars;$i++) { $enc_key .= substr($vars[$i], 0, 1); } $data_length = substr($data, 0, 1); $data_length .= substr($data, -1); $data = substr($data, 1); $data = substr($data, 0, -1); preg_match_all("/[0-9a-zA-Z]{".$data_length."}\:./", $data, $preg_result); $data = str_replace($preg_result[0], array(), $data); $base64_data = str_replace(array("-", "_"), array("+", "/"), $data); $base64_data_parity = strlen($base64_data) % 4; if ($base64_data_parity) { $base64_data .= substr("====", $base64_data_parity); } $enc_data = base64_decode($base64_data); $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB); $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); $decrypted_result = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $enc_key, $enc_data, MCRYPT_MODE_ECB, $iv); return $decrypted_result; } function validate_result($data,$check_token,$md5_secret) { $cur_date = date("Ymd"); $data = decrypt_reply_data(dec_and_hash($data, md5("XTREAMCODES_FTW!"))); preg_match_all('/<(.*?)>([^<]+)<\/\1>/i', $data, $vars); $result = array(); foreach ($vars[1] as $name => $value) { $result[$value] = $vars[2][$name]; } print_r($data); if (!is_array($result)) { exit("Invalid License Server Response"); } if (empty($result["md5hash"])) { return array("status" => "Invalid"); } if ($result["md5hash"] != md5($md5_secret . $check_token)) { $result["status"] = "Invalid"; $result["description"] = "MD5 Checksum Verification Failed"; return $result; } if ($result["status"] == "Active") { $result["checkdate"] = $cur_date; $localkey = serialize($result); $localkey = base64_encode($localkey); $localkey = md5($cur_date . $md5_secret) . $localkey; $localkey = strrev($localkey); $localkey = $localkey . md5($localkey . $md5_secret); $localkey = wordwrap($localkey, 80, "\n", true); $result["localkey"] = $localkey; return $result; } } function mask_enc_key($enc_value, $enc_key) { $splitted_value = str_split($enc_key); $rand_len = rand(70, 90); $splitted_rand_len = str_split($rand_len); $enc_value = substr_replace($enc_value, $splitted_rand_len[0], 0, 0); $enc_value = substr_replace($enc_value, $splitted_rand_len[1], strlen($enc_value), 0); for ($i = 0; $i < count($splitted_value); $i++) { $enc_value = substr_replace($enc_value, "+", rand(2, strlen($enc_value) - 1), 0); } foreach ($splitted_value as $enc_key => $letter ) { $enc_value = preg_replace('/\+/', gen_random_string($rand_len) . ":" . $letter, $enc_value, 1); } return $enc_value; } $md5_secret = "96b90f3b34525c54ff21c0caa1f71d19"; if (!isset($_POST) || empty($_POST)) return; $v = array_shift($_POST); if ($data = decrypt_reply_data(dec_and_hash($v,md5("dAaCZzzzaAsdASDa!##@")))) { parse_str($data,$vars); if (isset($vars['check_token'])) { $check_token = $vars['check_token']; $md5Hash = md5( $md5_secret. $check_token); $result = '<status>Active</status>' . '<registeredname></registeredname>\n' . '<companyname></companyname>\n' . '<email></email>\n' . '<serviceid>1</serviceid>\n' . '<productid>1</productid>\n' . '<productname></productname>\n' . '<regdate>2015-02-15</regdate>\n' . '<nextduedate>2050-12-15</nextduedate>\n' . '<billingcycle></billingcycle>\n' . '<validdomain></validdomain>\n' . '<validip></validip>\n' . '<validdirectory></validdirectory>\n' . '<Something is wrongoptions>Extra Load Balancer Servers=5' . '</Something is wrongoptions>\n' . '<customfields></customfields>\n' . '<addons>name=CopyRights Removal;nextduedate=0000-00-00;status=Active|name=Detect Reshares with No permissions;nextduedate=2015-04-15;status=Active</addons>\n' . '<md5hash>'.$md5Hash.'</md5hash>'; $result = enc_and_hash(enc_and_obfuscate($result,gen_random_string(32)),md5("XTREAMCODES_FTW!")); print $result; } };