Hi Cassie,
The Reference Implementation Guide (
http://licmax.com/
developers.html#ris) has a section called Hashed Licenses which
explains all about them. The advantage of hashed license keys is that
they can be verified online or offline. Offline you can verify
whether the present device is licensed to use your app without having
to connect to our license server. Online, you can not only verify the
license for the present device, but the license lifetime as well.
The Reference Implementations also have examples of how to verify
hashed licenses using SHA-1, -256, MD5, and base64 or ascii encoding.
Hope that helps. Sincerely,
Posri