.Net如何签署来自CA服务器的证书请求(.csr)

using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;

public class CertificateSigningRequest
{
    public void CreateCSR(string commonName, string country, string organization)
    {
        var csr = new CertificateRequest(new X500DistinguishedName($"CN={commonName}, C={country}, O={organization}"), RSA.Create(2048));
        byte[] csrData = csr.CreateSigningRequest();

        // Save the CSR to a file or send it to the CA server for signing
        System.IO.File.WriteAllBytes("request.csr", csrData);
    }
}

using System.Security.Cryptography.X509Certificates;

public class CertificateInstaller
{
    public void InstallCertificate(string certificateFilePath)
    {
        var store = new X509Store(StoreName.My, StoreLocation.CurrentUser);
        store.Open(OpenFlags.ReadWrite);
        var certificate = new X509Certificate2(certificateFilePath);
        store.Add(certificate);
        store.Close();
    }
}