chabun, so, for example, how about following scenario:

for each developer server creates public/private key pair.

when checking license on server: if success server encodes userid with developer private key
when checking license in app: server response decoding via public key(hardcoded in app) and comparing to userId. if ok -> licensed.

You might want to ask @ngreader guys on twitter. They do have this concept implemented in their app.

Originally Posted by diverofdark

chabun, so, for example, how about following scenario:

for each developer server creates public/private key pair.

when checking license on server: if success server encodes userid with developer private key
when checking license in app: server response decoding via public key(hardcoded in app) and comparing to userId. if ok -> licensed.

I'm not sure if it would be good to encode the request to the server as well but otherwise it sounds really cool now... I'll use this service when I need this (and tell my friends about it)

Here is one way to do it http://stackoverflow.com/questions/5...re-license-key

Originally Posted by wpxbox

Here is one way to do it http://stackoverflow.com/questions/5...re-license-key

Well, what they suggest is not as good as diverofdark's service which is a lot more secure and still easy to use for the customers...

Greetings everyone!

Today I updated promo.g33k.ru, now it has:
- more detailed about page,
- SDK now includes RSA1024/SHA1 sign for additional security checks
- Binary SDK available
- Russian localization(if anyone cares ) (btw, if you can help translating to other language(s) or correct english misspellings - i will appreciate this).
- Many minor bugfixes.

So, from now this service works in beta mode

Originally Posted by diverofdark

Greetings everyone!

Today I updated promo.g33k.ru, now it has:
- more detailed about page,
- SDK now includes RSA1024/SHA1 sign for additional security checks
- Binary SDK available
- Russian localization(if anyone cares ) (btw, if you can help translating to other language(s) or correct english misspellings - i will appreciate this).
- Many minor bugfixes.

So, from now this service works in beta mode

Thanks! I will check this out

Hey diverofdark
It would be nice if you update the first post in the thread with all information. That's the way it's usually done in the forum.

A possible user (here dev ) can read it and without having to browse the whole thread, he can use your promocode service...

Thanks for mentioning it, I updated the first post.