<PackageReference Include="Microsoft.Bcl.Cryptography" Version="10.0.11" />

System.Runtime.Versioning.SupportedOSPlatformAttribute

Records the operating system (and minimum version) that supports an API. Multiple attributes can be applied to indicate support on multiple operating systems.
namespace System.Runtime.Versioning { internal sealed class SupportedOSPlatformAttribute : System.Runtime.Versioning.OSPlatformAttribute { public SupportedOSPlatformAttribute(string platformName); } }