Sinisterly
How to create licensing key validation ? - Printable Version

+- Sinisterly (https://sinister.li)
+-- Forum: Coding (https://sinister.li/Forum-Coding)
+--- Forum: Visual Basic & .NET Framework (https://sinister.li/Forum-Visual-Basic-NET-Framework)
+--- Thread: How to create licensing key validation ? (/Thread-How-to-create-licensing-key-validation)

How to create licensing key validation ? - bigboy7788 - 08-06-2020

Hi everyone,

I've developed c# based encryption software & its working fine but to sell it I want to create license key validation mechanisom. i.e when someone visit my website & after completion of payment he should get email with the key & download link like any antivirus do. Right now i have only wordpress website so need your help in following point:

1) As I want my app more secure I want to validate key with my online server, so how should I achieve that ?
2) any cheap server for making trial ?
3) security tips from hackers like you Tongue
4) reference link for this kind of thing or video would be best for my basic understanding

thanks a lot in advance Smile

RE: How to create licensing key validation ? - chunky - 08-09-2020

1) You need a backend your application talks to.
2) Literally any vps can be used.
3) Just think about how you would crack your own app and if you know a way to crack it think about how you can prevent it.
4) A very good proof of concept of a license system written in C++ and node.js: https://github.com/ReactiioN1337/license-system

Feel free to message me if you need any help in understanding the stuff at 4).

RE: How to create licensing key validation ? - miso - 08-10-2020

(08-06-2020, 06:55 AM)bigboy7788 Wrote: Hi everyone,

I've developed c# based encryption software & its working fine but to sell it I want to create  license key validation mechanisom. i.e when someone visit my website & after completion of payment he should get email  with the key & download link like any antivirus do.  Right now i have only wordpress website so need your help in following point:

1)  As I want my app more secure I want to validate key with my online server, so how should I achieve that ?
2) any cheap server for making trial ?
3) security tips from hackers like you Tongue
4) reference link for this kind of thing or video would be best for my basic understanding

thanks a lot in advance Smile
If you want i can help you testing the licensing system for .NET apps in the future

I'd recommend obfuscating your application too, it will make it harder to crack

RE: How to create licensing key validation ? - mothered - 08-10-2020

I can confirm that @miso Is brilliant at cracking .NET apps.

Every tool I've had the pleasure of testing, has worked flawlessly.

RE: How to create licensing key validation ? - bigboy7788 - 08-11-2020

thanks Smile right now im looking at some tutorial so when Ill perform some practicals, ill definitely ask for help Smile ..

Thanks a lot everyone for help