HTML Executable lets you add a license validation to your ebooks or publications. Validation is a process that checks the validity of the end user’s registration key before letting him access the ebook. Since it can be performed periodically, validation allows you to control the use of your ebook: for instance, you can remotely block access to your publication in case of fraudulent purchases or refunds.
To add a validation process to your ebook, go to the Certificate Manager, double-click on a certificate and choose the “Validation” tab as shown below:
This option is only available if you are working with online activation.
End users must have an active Internet connection, otherwise validation cannot be performed. Validation requires a remote web server with the HTML Executable Activation Kit installed on it, or an active subscription with our ebook protection service Protect Ebook .net.
The validation process is automated: the publication interacts with the activation server automatically. To perform validation, the publication sends the activation key, the registration key and the unique system ID to the activation server. No private personal data is sent.
The latter checks the received information and looks for the user’s account in the databases. If the account is marked as “blocked” or if an error occurs, validation is negative. Otherwise, validation is positive and the activation server returns a validation code. The publication finally checks this validation code and determines whether access is granted or not.
If the customer uses a proxy server, he should have already configured it when activating the publication and the latter will reuse the same proxy settings. If the proxy server has to be changed, it can be done through command line.
You can choose the validation frequency. For example, you can check the validity every X times the publication is run. In that case, you have to enter the value for X (an integer such as 3).
For advanced users, you have two ways to customize the validation process:
... if not RunSimpleBooleanFunc("Trial.DoServerValidate", false) then begin // Actions to perform when the validation was unsuccessful, for instance display an error // message and exit publication: ExitPublication; ShowMessage("Could not validate your license. Please ensure you have a valid subscription"); ExitPublication; end;
function OnKeyValidation: Boolean; begin Result := True; // Returns True to perform validation end;
Select the action that should be performed if the validation is unsuccessful:
Exit the publication: displays an error and exits.
Return to the Trial state: the publication automatically reverts to the Default certificate and exits. Registration information is consequently erased. This option is not recommended however.
function OnKeyNotValidated: Boolean; begin MessageBox("This program will close now because it could not verify your license", "User Error", MB_OK); Result := True; // Returns True to exit the program end;
Messages related to the validation process can be easily customized using the Language page: the publication uses resource strings named
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