An effective method for encrypting a license file?

Question

For a web application, I would like to create a simple but effective licensing system. In C#, this is a little difficult, since my decryption method could be viewed by anyone wi

Answer 1

Why would you need to encrypt it? If it is tampering you are afraid (for instance someone increasing the number of users), could you perhaps just sign it with e.g. your organization's digital certificate instead?