https://docs.microsoft.com/zh-cn/dotnet/api/system.security.cryptography.rsaparameters?view=netframework-4.7
https://docs.microsoft.com/zh-cn/dotnet/api/system.security.cryptography.rsacryptoserviceprovider?view=netframework-4.7
https://github.com/dotnet/corefx/blob/master/src/System.Security.Cryptography.Csp/src/System/Security/Cryptography/RSACryptoServiceProvider.Windows.cs
public sealed partial class RSACryptoServiceProvider : RSA, ICspAsymmetricAlgorithm
https://github.com/dotnet/corefx/blob/master/src/System.Security.Cryptography.Csp/tests/RSACryptoServiceProviderTests.cs