Checking if user has changed cookie value, manually

Question

I am busy with a login system for my project.

Just for an extra step to the security.. How can I check/detect if a user has manually changed a cookie value?

Is t

Answer 1

Why don't you encrypt the cookie value. That way it is tough for the user to actually change it correctly. Like the previous answer mentions, if it is really sensitive, cookie is not the place to store it but encryption gives you a little bit more protection.