All of my Plugins,except the WebDAV Connector, use a complex system, to ensure that the saved license is valid.
I had a lots of fun with the development of these check, because every new algorithm had to go through a test, within I would break these validation. This results in a secure way to validate the license after every Update and I could eliminate the impact in your work.
These validations are necessary to keep the price as low as possible!
At the moment of License Validation there are several information, the plugins transmit to the license server over a SSL connection:
- The md5 Hash of your Hostname (Nobody could recover the complete hostname)
- The md5 Hash of your License Key
- Your vtigerCRM Version
- Name / Version of Extension
- Filename and Filesize of the File, which runs the license validation
I would save these information for 2 months after transmission.
Nobody could rebuild any personal information from the saved data!
If there are any troubles with these checks or your license, most of the extensions works without changes. Only the administration of these extensions will be blocked.
If you wouldn’t agree with these validation, I’m sorry, but you couldn’t use my extensions.