Question

I have an assembly which should not be used by any application other than the designated executable. Please give me some instructions to do so.

Answer 1

You can sign the assembly and the executable with the same key and then put a check in the constructor of the classes you want to protect:

public class NotForAnyoneElse {   public NotForAnyoneElse() {     if (typeof(NotForAnyoneElse).Assembly.GetName().GetPublicKeyToken() != Assembly.GetEntryAssembly().GetName().GetPublicKeyToken()) {       throw new SomeException(...);     }   } }