<PackageReference Include="System.Security.Cryptography.Cng" Version="5.0.0-preview.8.20407.11" />

Microsoft.Win32.SafeHandles.SafeNCryptHandle

public abstract class SafeNCryptHandle : SafeHandle
namespace Microsoft.Win32.SafeHandles { public abstract class SafeNCryptHandle : SafeHandle { protected SafeNCryptHandle(); protected abstract bool ReleaseNativeHandle(); } }