Algorithm for unique CD-KEY generation with validation

Question

I am trying to create a unique CD-KEY to put in our product\'s box, just like a normal CD-KEY found in standard software boxes that users use to register the product.

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Answer 1

I use SeriousBit Ellipter link for software protection but I don't see any reason you could generate a group of unique keys each week and us the library to verify the key validity when entered into your web site. You can also encode optional services into the key allow you to control how the sample is processed from the key (that's if you have different service levels).

As it uses an encrypted method of key generation in the first place and it's relatively cheap, it's certainly worth a look I would say.