Version 5.x has been out of support since December 13, 2022, and this corresponding section of the documentation is no longer maintained. We strongly recommend upgrading to a supported version.
Duende IdentityServer relies on the built-in data protection feature of ASP.NET for
It is crucial that you setup ASP.NET Core data protection correctly before you start using your IdentityServer in production. Please consult the Microsoft documentation for more details.