WCF身份验证之用户名密码认证

WCF支持多种认证技术，例如Windowns认证、X509证书、Issued Tokens、用户名密码认证等，在跨Windows域分布的系统中，用户名密码认证是比较常用的，要实现用户名密码认证，就必须需要X509证书,用来加密用户名和密码。

1. 创建数字证书

   makecert -sr localmachine -ss My -n CN=ejiyuan -sky exchange -pe -r。

2. 创建服务代码

[ServiceContract]
    public interface ICalculator
    {
        [OperationContract]
        double add(double x, double y);
    }

    public class CalculatorService : ICalculator
    {

        public double add(double x, double y)
        {
            return x + y;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            ServiceHost _serviceHost = new ServiceHost(typeof(CalculatorService));
            _serviceHost.Opened += (s, q) =>
            { 
                Console.WriteLine("服务已启动");
                Console.Read(); 
            };
            _serviceHost.Open();
        }
    }

3.设置安全验证模式

<bindings>
      <netTcpBinding>
        <binding name="nonSessionBinding">
          <!--当前绑定的安全认证模式-->
          <security mode="Message" >
            <!--定义消息级安全性要求的类型，为证书-->
            <message clientCredentialType="UserName" />
          </security>
        </binding>
      </netTcpBinding>
    </bindings>

4.设置服务凭据值

<behaviors>
      <serviceBehaviors >
        <behavior name="CalculatorServiceBehavior" >
          <serviceCredentials>
            <!--指定一个 X.509 证书，用户对认证中的用户名密码加密解密-->
            <serviceCertificate findValue="CN=ejiyuan" x509FindType="FindBySubjectDistinguishedName" storeLocation="LocalMachine" storeName="My"/>
            <clientCertificate>
              <!--自定义对客户端进行证书认证方式 这里为 None-->
              <authentication certificateValidationMode="None"/>
            </clientCertificate> 
            <!--自定义用户名和密码验证的设置-->            
            <userNameAuthentication userNamePasswordValidationMode="Custom" customUserNamePasswordValidatorType="Wcf.Extensions.Security.UserNamePasswordValidator,Wcf.Extensions.Security" />           
          </serviceCredentials>          
        </behavior>
      </serviceBehaviors>
    </behaviors>

5.自定义证书验证 
通过继承自’System.IdentityModel.Selectors.UserNamePasswordValidator’，然后我们重写里面的’Validate’方法来实现用户名密码认证逻辑

public class UserNamePasswordValidator : System.IdentityModel.Selectors.UserNamePasswordValidator
    {
        public override void Validate(string userName, string password)
        {
            if (userName != "ejiyuan" || password != "123456")
            {
                throw new System.IdentityModel.Tokens.SecurityTokenException("Unknown Username or Password");
            }
        }
    }

6.客户端代码

class Program
    {
        static void Main(string[] args)
        {
            CalculatorClient client = new CalculatorClient();
            //指定认证的用户名和密码
            client.ClientCredentials.UserName.UserName = "ejiyuan";
            client.ClientCredentials.UserName.Password = "123456";

            var q = client.add(1, 2);
            Console.WriteLine(client.add(1,2));
            Console.Read();
        }
    }

7.客户端配置信息（自动生成的）

<system.serviceModel>
        <bindings>
            <netTcpBinding>
                <binding name="NetTcpBinding_ICalculator" >
                    <security mode="Message">
                        <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
                        <message clientCredentialType="UserName" />
                    </security>
                </binding>
            </netTcpBinding>
        </bindings>
        <client>
            <endpoint address="net.tcp://192.168.101.13:8000/calculatorservice"
                binding="netTcpBinding" bindingConfiguration="NetTcpBinding_ICalculator"
                contract="ServiceReference1.ICalculator" name="NetTcpBinding_ICalculator">
                <identity>
                    <certificate encodedValue="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" />
                </identity>
            </endpoint>
        </client>
    </system.serviceModel>

备注：基于UserNamePasswordValidator的认证方式，Validator中可以知道相应的UserName和Password，在Service中直接使用OperationContext.Current.ServiceSecurityContext.PrimaryIdentity即可获取当前登录用户信息。