使用C＃在MQTT mosquitto中自签名的x509证书问题

Question

我在C＃中使用mqtt库，并遵循此URL。 http://www.embedded101.com/Blogs/PaoloPatierno/entryid/366/mqtt-over-ssl-tls-with-the-m2mqtt-library-and-the-mosquitto-broker ，当我连接我的网络时，通过实现此URL客户端到本地服务器发生以下错误：-

C:\Program Files\mosquitto>mosquitto -c mosquitto.conf -v
1438001198: mosquitto version 1.4 (build date 27/02/2015 21:01:03.50) starting
1438001198: Config loaded from mosquitto.conf.
1438001198: Opening ipv4 listen socket on port 8883.
Enter PEM pass phrase:
1438001224: New connection from 10.112.154.82 on port 8883.
1438001224: OpenSSL Error: error:140890C7:SSL routines:ssl3_get_client_certifica
te:peer did not return a certificate
1438001224: Socket error on client <unknown>, disconnecting.

我的代码是：-

X509Certificate certificate = new X509Certificate(@"D:\POC\Abhinav\cert\cert\m2mqtt_ca.crt", "india@123");  
MqttClient client = new MqttClient("10.112.154.82", 8883, true, new X509Certificate(certificate));      
string clientId = new Guid("b0ca37b1-8a90-4a59-9665-fd8504357165").ToString();
client.Connect(clientId);  

错误：

c# Error:-{"A call to SSPI failed, see inner exception."}  

谁能建议我如何使用mosquitto在mqtt中实施证书。

Answer 1

似乎mosquitto代理正在等待用于客户端身份验证的客户端证书。 如上所述，M2Mqtt仅支持服务器身份验证。 在此处阅读mosquitto文档： http ://mosquitto.org/man/mosquitto-conf-5.html似乎“ require_certificate”设置为true（需要客户端证书）。 您需要将其设置为false。

保罗

Answer 2

我知道现在回答还为时已晚，但是对于任何人都遇到过类似的问题。 解决方案： 在本地计算机上将证书作为根证书安装 ，并将两个证书文件参数都传递为null并将加密设置为TLSV1.2示例：

var client = new MqttClient(IPAddress.Parse(mqttBrokerHost), 8883, true,null, null, MqttSslProtocols.TLSv1_2);

Answer 3

对于客户端证书，您需要根据您的CA，证书和私钥创建PFX文件。 在命令行上使用openssl：

openssl pkcs12 -export -out <OutputName>.pfx -inkey client.key -in client.crt -certfile mosquitto.org.cer

代码C＃与M2MQTT连接：（此示例中的OutputName为client.pfx）

X509Certificate certRootCa = X509Certificate.CreateFromCertFile(Application.StartupPath + "/caRoot.crt");
X509Certificate2 certClient = new X509Certificate2(Application.StartupPath + "/client.pfx", "password");

MqttClient client = new MqttClient("10.112.154.82", 8883, true, certRootCa, certClient, MqttSslProtocols.TLSv1_2);

string clientId = new Guid("b0ca37b1-8a90-4a59-9665-fd8504357165").ToString();

client.Connect(clientId);