wcf：将用户名添加到消息头是否安全？

Question

我正在连接到 ASP.NET 应用程序中的 WCF 服务。我正在使用一个用户名和密码登录，并将登录到 ASP.NET Web 应用程序的用户的实际用户名传递到消息头中，如下所示。

  using (OperationContextScope scope = new OperationContextScope(myService2.InnerChannel))
  {
    Guid myToken = Guid.NewGuid();

    MessageHeader<string> messageHeader = new MessageHeader<string>(HttpContext.Current.User.Identity.Name);
    MessageHeader untyped = messageHeader.GetUntypedHeader("token", "ns");

    OperationContext.Current.OutgoingMessageHeaders.Add(untyped);

    lblResult.Text = myService2.GetData(1231);
  }

我也在使用如下服务证书

      <serviceCredentials>
        <serviceCertificate findValue="CN=tempCert" />
        <userNameAuthentication userNamePasswordValidationMode="MembershipProvider"
          membershipProviderName="MySqlMembershipProvider" />
      </serviceCredentials>

我担心的是这种保护是否足以阻止人们获取存储在邮件标题中的用户名？

ASP.NET 配置是

    <system.serviceModel>
    <behaviors>
        <endpointBehaviors>
            <behavior name="NewBehavior">
                <clientCredentials>
                    <serviceCertificate>
                        <authentication revocationMode="NoCheck"/>
                    </serviceCertificate>
                </clientCredentials>
            </behavior>
        </endpointBehaviors>
    </behaviors>
    <bindings>
        <wsHttpBinding>
            <binding name="wsHttpEndpoint" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false">
                <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384"/>
                <reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false"/>
                <security mode="Message">
                    <transport clientCredentialType="Windows" proxyCredentialType="None" realm=""/>
                    <message clientCredentialType="UserName" negotiateServiceCredential="true" algorithmSuite="Default" establishSecurityContext="true"/>
                </security>
            </binding>
        </wsHttpBinding>
    </bindings>
    <client>
        <endpoint address="http://localhost/WCFTestService/Service.svc" behaviorConfiguration="NewBehavior" binding="wsHttpBinding" bindingConfiguration="wsHttpEndpoint" contract="WCFTestService.IService" name="wsHttpEndpoint">
            <identity>
                <certificate encodedValue=""/>
            </identity>
        </endpoint>
    </client>
</system.serviceModel>

在服务端

  <system.serviceModel>
<bindings>
  <wsHttpBinding>
    <binding name="wsHttpEndpointBinding">
      <security>
        <message clientCredentialType="UserName" />
      </security>
    </binding>
  </wsHttpBinding>
</bindings>
<services>
  <service behaviorConfiguration="ServiceBehavior" name="Service">
    <endpoint address="" binding="wsHttpBinding" bindingConfiguration="wsHttpEndpointBinding"
      name="wsHttpEndpoint" contract="IService">
      <!--<identity>
        <dns value="" />
      </identity>-->
    </endpoint>
    <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
  </service>
</services>
<behaviors>
  <serviceBehaviors>
    <behavior name="ServiceBehavior">
      <serviceMetadata httpGetEnabled="true" />
      <serviceDebug includeExceptionDetailInFaults="false" />
      <serviceCredentials>
        <serviceCertificate findValue="CN=tempCert" />
        <userNameAuthentication userNamePasswordValidationMode="MembershipProvider"
          membershipProviderName="MySqlMembershipProvider" />
      </serviceCredentials>
    </behavior>
  </serviceBehaviors>
</behaviors>

Answer 1

最大的问题是：您的绑定是否启用了任何类型的传输级或消息级安全性？你用的是什么绑定？

如果您具有传输级别的安全性（通常通过使用基于 SSL 的 HTTPS），那么您将拥有一个我认为非常安全的点对点加密传输通道。

如果您也使用客户端上的证书获得消息级安全性，并且您确实加密了整个消息，那么您也应该是安全的。

这实际上归结为您正在使用的绑定以及您在该绑定上使用的安全设置。向我们展示服务器的配置！

马克