Home/ Questions/Q 275541
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-12T00:46:54+00:00

I’m going to implement license key generator on my website but I’ve very few

  • 0

I’m going to implement license key generator on my website but I’ve very few knowledges of php!
In my (Cocoa) application I’ve integrate a system verification that use the RSA_sign function (in C#) … I would like to use the paypal IPN notification system to automatically generate and send to my users their license keys … but I really don’t know how to sign a string in php using an RSA key!!! In php I know only the openss_sign function but it isn’t the same thing!
Or is better and easiest to use a DSA signing method???

Please, help!

Thanks in advance for all the replies!!!

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You want openssl_sign().

    EDIT:

    • Make sure the message digest is the one you want to use to verify.
    • Don’t test it by comparing the base64 output with another signature, test it by verifying the signature in your C# code. I believe it’s possible for two valid signatures with the same key of the same data to have differing binary representations.
    • 0