Hi Guys,
I am a C-sharp developer, struggling to write the code or find the code for generating the CD-Key for one of my product development.

Requirements :
I want to generate a 16 digit number [XXXX-XXXX-XXXX-XXXX] for a given alpha numeric string. I am also looking for integration the "No. of concurrent users" in the key itself. Basically my application is a window based, I want to check for concurrent users, so to achieve this, I have to have this concurrent license number stored in the key. The moment I decrypt the key I should be able to get the string as well the concurrent number. This helps me in validating.

Appreciate if you can guys help me out in getting the right souce code or help me in writing it. I will be very happy if I get the source at the earliest.

Thanks in Advance
Dayanand