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

When you implement your signing / verification code, be careful not to put it in a separate assembly. Code Access Security tamper-proofing is now very easy to bypass, as explained in the article CAS Tamper-Proofing is Broken: Consequences for Software Licensing.

Obligatory disclaimer & plug: the company I co-founded produces the OffByZero Cobalt licensing solution.