空PrivateKey in x509certificate2

Question

我已经用私钥在本地机器商店(win7)上安装了证书。在c#代码中，我这样做：

        X509Certificate2 cert = null;
        var store = new X509Store(storeName, storeLocation);
        store.Open(OpenFlags.ReadOnly);
        try
        {
            var result = store.Certificates.Find(X509FindType.FindByThumbprint, thumbprint, false);
            ServicePointManager.Expect100Continue = true;
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
            ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
            cert = result.Count > 0 
                ? result[0] 
                : null;
        }
        finally
        {
            store.Close();
        }
        return cert;

在证书变量中，我有我的证书，但它有问题: HasPrivateKey是真，但PrivateKey没有任何对象。如果我用我的web应用程序的C#代码发送REST请求，我就会出错：

AcquireCredentialsHandle() failed with error 0X8009030D.
The request was aborted: Could not create SSL/TLS secure channel.

所有的权利被授予证书在商店。请帮帮忙，怎么了？

Certutil的结果是俄语(我用“*”隐藏安全信息)：

certutil -store my "cf 35 63 34 14 30 a0 32 ca 4a 58 b9 7a 7a ab 18 a4 47 7d a4"
================ Сертификат 0 ================
Серийный номер: 100030
Поставщик: ******************************
 NotBefore: 07.07.2015 5:00
 NotAfter: 24.12.2023 4:59
Субъект: ********************************
Не корневой сертификат
Шаблон:
Хеш сертификата(sha1): cf 35 63 34 14 30 a0 32 ca 4a 58 b9 7a 7a ab 18 a4 47 7d a4
  Контейнер ключа = 94c3b04b44d51674a1b7de89c10bd7d7_09614f03-cc81-44e6-a978-81773242876c
  Простое имя контейнера: CertReq-ceda22d5-2893-496a-b8c1-5c9ceaed82f1
  Поставщик = Microsoft Strong Cryptographic Provider
Тест шифрования пройден

Answer 1

我已经猜到问题了。我从机器存储中删除证书，然后将已安装的证书从当前用户存储导出到.pfx文件中，并将其导入机器存储。现在PrivateKey有了对象。下一步，我将协议类型从Tls更改为Tls12(为Win7+工作)：

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;