[cfaussie] UUID as a product key

[Patrick Branley]

Hi Guys

Just wondering how secure using a CF UUID or SQL GUID as product activation key would be ?

Heres my idea for the scenario

1. user purchases software, write a record to the DB on payment and email them the UUID thats generated.

2. when they launch the application (an EXE) they must enter the UUID to have it activated. I make a web-service call back the to the CF Server to validate the UUID is a paid customer in the DB. if they web service returns true the application becomes active.

3. I store the UUID in either the registry or an XML file in the installation folder and re-check each time they launch the app.

The only other thing i can think of doing is actually storing the hashed version of the UUID in the db and doing a compare to make the db more secure.

does this seem like a resonably secure way to protect my app ?

Pat




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