An API documentation can be found at

This library contains methods for:

* Time change check (make sure the time has not been changed on the client computer)
* Key Validation (this will use to validate keys against the database)
* Key Activation (this will, depending on the settings, activate a key with a specific machine code)
* Key Activation Trial (allows you to update a key if it is a trial key)
* Get Machine Code (calculates a machine code given any hash function)
* Get Eight Byte Hash (returns an 8 digit long hash number)

* The article of how the activation component can be used is found here:
* For Key Activation Trial:
* For Key Validation:

NB: SKGL Extension supports Java also:

Suggested Alternatives


Additional Details

We have renamed the package to Cryptolens.Licensing. Please install the new package, Cryptolens.Licensing, to access new updates. SKGLExtension is no longer maintained.

There is a newer version of this package available.
See the version list below for details.
Install-Package SKGLExtension -Version
dotnet add package SKGLExtension --version
<PackageReference Include="SKGLExtension" Version="" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add SKGLExtension --version
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes Fixed the GetKeyInformationFromParameters method not accepting "newkey" parameter. Added two methods, GetParameters and GetKeyInformationFromParameters that will work with the new version of the Web API. A minor change in the way products are displayed and information about pid, uid and hsum is retreived. the ability to get a list of all products and product variables such as "uid", "pid" and "hsum".

API documentation:

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version History

Version Downloads Last updated
4.0.3 983 4/20/2018 636 6/21/2017 716 6/27/2016 553 6/22/2016 628 3/16/2016 620 1/19/2016 641 12/5/2015 602 11/1/2015 609 9/3/2015 587 8/9/2015 604 7/24/2015 612 5/13/2015 592 5/3/2015 630 1/30/2015 615 1/15/2015 584 1/7/2015 642 12/9/2014 733 11/19/2014 885 11/17/2014 817 11/4/2014 601 10/23/2014 655 9/30/2014 590 9/27/2014 601 8/11/2014 588 8/8/2014
1.0.3 629 7/27/2014
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