WordPress Version: 5.5
/**
* Displays the post password.
*
* The password is passed through esc_attr() to ensure that it is safe for placing in an HTML attribute.
*
* @since 2.7.0
*/
function the_post_password()
{
$post = get_post();
if (isset($post->post_password)) {
echo esc_attr($post->post_password);
}
}