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Securing Your Code with Password Hashing using PDO
In order to enhance the security of your code, you should consider implementing password hashing using PDO. This technique offers a higher level of protection compared to using MD5.
In your login script, you can incorporate password hashing as follows:
$sql = "SELECT * FROM users WHERE username = :u"; $query = $dbh->prepare($sql); // prepare $params = array(":u" => $_POST['username']); $query->execute($params); // execute $results = $query->fetchAll(); // then fetch if (count($results) > 0) { $firstrow = $results[0]; $providedPassword = $_POST['password']; $hashedPasswordFromDB = $firstrow['password']; if (password_verify($providedPassword, $hashedPasswordFromDB)) { // Valid login } else { // Invalid password } } else { // Invalid username }
In your registration script:
$dbh = new PDO(...); $username = $_POST["username"]; $email = $_POST["email"]; $password = $_POST["password"]; $hash = password_hash($password, PASSWORD_DEFAULT); $stmt = $dbh->prepare("insert into users set username=?, email=?, password=?"); $result = $stmt->execute([$username, $email, $hash]);
By utilizing password hashing, you can effectively secure your code against unauthorized access and data breaches.
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