PHP/Network/openssl public encrypt

Encrypting/Decrypting Data

 
<?php
$pkey = "file:///etc/public_keys/dbkey.crt";
openssl_public_encrypt($_POST["credit_card"], $cryptnum, $pkey);
$sql = sprintf("INSERT INTO billing (userid, ccnum) values(%d, "%s")",$_SESSION["userid"], addslashes($cryptnum));
database_query($sql) or die("Unable to insert credit card data");
?>