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

System.Security.Cryptography.RC2CryptoServiceProvider

public sealed class RC2CryptoServiceProvider : RC2
namespace System.Security.Cryptography { public sealed class RC2CryptoServiceProvider : RC2 { public bool UseSalt { get; set; } public RC2CryptoServiceProvider(); } }