如何使用C＃无私钥创建自签名证书

Question

我试图基于自行创建的证书对文本进行加密，尽管未生成私钥，但我在下面找到了代码，但对我而言它不会生成私钥

static void MakeCert()
{
    var ecdsa = ECDsa.Create(); // generate asymmetric key pair
    var req = new CertificateRequest($"cn={CNName}", ecdsa, HashAlgorithmName.SHA512);
    var cert = req.CreateSelfSigned(DateTimeOffset.Now, DateTimeOffset.Now.AddYears(5));

    // Create PFX (PKCS #12) with private key
    byte[] certExport = cert.Export(X509ContentType.Pkcs12,password);
    File.WriteAllBytes($"{path}/{name}.pfx", certExport);
    X509Certificate2 certificate = new X509Certificate2($"{path}/{name}.pfx",password);

    // Create Base 64 encoded CER (public key only)
    File.WriteAllText($"{path}/{name}.cer", "-----BEGIN CERTIFICATE-----\r\n" + Convert.ToBase64String(cert.Export(X509ContentType.Cert), Base64FormattingOptions.InsertLineBreaks)
        + "\r\n-----END CERTIFICATE-----");

    string cerFileName = $"{path}\\{name}.pfx";
}

这是我的加密方法

private static string Encrypt(X509Certificate2 certificate, string tringToEncrypt)
{
    string output = string.Empty;

    using (X509Store store = new X509Store(StoreLocation.CurrentUser))
    {
        if (!certificate.HasPrivateKey)
            throw new Exception("The certificate does not have a private key");

        using (RSACryptoServiceProvider cps = (RSACryptoServiceProvider)certificate.PrivateKey)
        {
            byte[] bytesData = Encoding.UTF8.GetBytes(stringToEncrypt);
            byte[] bytesEncrypted = cps.Encrypt(bytesData, false);
            output = Convert.ToBase64String(bytesEncrypted);
        }
    }

    return output;
}

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