serial numbers/product keys

[gemma-the-husky]

I presume a serial number/product key isn't actually stored within a distributed app.

Instead I expect that the printed serial number/product key is validated as a "proper" key in some way, and then the validation key against this number is released.

this way, you can count how many times a given key has been used, and limit installs in that way

So is there an easy algorithm to generate a valid key, available?

Or somewhere that explains this more clearly.

 

[DCrake]

I have a couple of key generators designed in VB if you have VB I will send you the projects. Let me know.

 

[NigelShaw]

Hi

For Access, I use a sagekey product. You enter a set of numbers and goes with the program hard keyed in a routine. You put the same set of numbers in the web app that comes with it and when the program verifies, it checks the web and lists it as being used. You can keep a check on the licenses and revoke then too from the web.

I believe there is another system too call red baron.

Cheers

Nigel

 

[smig]

@David:
I don't have VB installed
can you put the code of creating the number ?

 

[DCrake]

Smig

Cannot post the code as it does not work within Access without major changes.

 

[smig]

so maybe you can help me to code my oun key.
here is what I need
the code should be based on these parameters:
1. UserID - Up to 9 charcters (normaly numbers)
2. Application specific (don't know how this one will look like, yet)
3. Date (Application installed date)

I need to be able to identify all these variables based on the key.
so it can be based on a random number, unless the rando number is installed in known place in the key.

thanks,
Tal