Re: copy protection

[Enrique Nivasch]

Since so much has ben said about copy protection in the past day or so I would like to add a little bit.

When I copy protect I usualy want cover two posibilities:

one is the copying of the software to another machine

and the second one is the use of the software after the user has decided he doesn't want it anymore.

The first reason is obvious, the second one comes into play when you give the user the possibility to return the program or when he is allowed to use it only for a certain period of time. I also want to be able to authorize products by phone or e-mail.

I the cheme you describe the computer generates a number, it is the given over to the service provider and the provider gives back the user another number which is the stored in the computer.

If the first number, the one generated by the computer, is somehow taken from the machine itself the authorization number given by the provider will allways work on that computer, it has no limit.

If, however, the number generated by the computer has two components, a machine identificator and a random number, the user cannot reactivate his program after his ussage time has expired.

Enrique

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