Product Key Serial Number Generation

[Alper Camel]

Hi, I am generating product key in the form of ; XXXXX-XXXXX-XXXXX-XXXXX I want to generate unique serial key related to this product key. I'd be so glad if someone help me. Thank you in advance.

[Judah Gabriel Himango]

Guid.NewGuid().ToByteArray() will give you 16 bytes.

Tech, life, family, faith: Give me a visit. I'm currently blogging about: God-as-Judge, God-as-Forgiver The apostle Paul, modernly speaking: Epistles of Paul Judah Himango

[Alper Camel]

But, GUID will generate RANDOM string, that will NOT related to my product key. Thank you.

[Judah Gabriel Himango]

I don't understand, then, what you're trying to do. You want a product key, I gave you a piece of code to generate one. Are you saying you want to validate that? If so, validate with a server? Or just some special crafted key that is either valid or invalid?

Tech, life, family, faith: Give me a visit. I'm currently blogging about: God-as-Judge, God-as-Forgiver The apostle Paul, modernly speaking: Epistles of Paul Judah Himango

[ednrgc]

Check google for Elliptic Curve Cryptography

[CodingDragon]

Hi Have never done such a thing, but you could just run a for loop with an ID and then hash it. for(int i = ID; ID < limit; ID++) { // gethash() gives you a 9 digit number - theoretically not unique but very close. // collisions in hash is very rare string hash = ID.gethash().toString(); // if needed longer just do it again hash = hash.gethash().toString(); // format the string to look like xxxx-xxxx-xxxx-xxxx (insert the '-' etc) } Not pretty, but it would work.

[Alper Camel]

Well your code give me some ideas for doing that. Thank you so much. I'll test this now...

[Alper Camel]

This is definately what I'm looing for... Thank you so much... :)