Check out the download links below.
You'll be navigated to Google Drive.
You'll need .NET 8.0 SDK in order to execute the programs.

SPKI Client Apps SPKI SHSM Client App

The applications can also be executed or run for Linux and MacOS.

For Linux and MacOS, navigate to the folder where the application resides.

Kindly execute the application via console/terminal, for example:

dotnet SPKIEU_LSHSM_ClientApp.Desktop.dll