<PackageReference Include="NETStandard.Library" Version="2.0.1" />

System.Security.Cryptography.X509Certificates.StoreName

public enum StoreName
namespace System.Security.Cryptography.X509Certificates { public enum StoreName { AddressBook = 1, AuthRoot, CertificateAuthority, Disallowed, My, Root, TrustedPeople, TrustedPublisher } }