<PackageReference Include="NETStandard.Library" Version="2.0.2" />

System.Security.Cryptography.X509Certificates.X509ChainPolicy

public sealed class X509ChainPolicy
namespace System.Security.Cryptography.X509Certificates { public sealed class X509ChainPolicy { public OidCollection ApplicationPolicy { get; } public OidCollection CertificatePolicy { get; } public X509Certificate2Collection ExtraStore { get; } public X509RevocationFlag RevocationFlag { get; set; } public X509RevocationMode RevocationMode { get; set; } public TimeSpan UrlRetrievalTimeout { get; set; } public X509VerificationFlags VerificationFlags { get; set; } public DateTime VerificationTime { get; set; } public X509ChainPolicy(); public void Reset(); } }