How to: Set the ProtectionLevel Property-优快云博客

本文介绍如何使用WCF中的ProtectionLevel属性来确保服务合同、操作合同及故障消息的安全。通过示例展示了如何设置不同级别的保护，如签名和加密，并应用于服务接口定义中。

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http://msdn.microsoft.com/en-us/library/aa347791.aspx

To sign all messages for a service

[ServiceContract(ProtectionLevel = ProtectionLevel.Sign)]
public interface ICalculator

To sign all message parts for an operation

// Set the ProtectionLevel on the whole service to Sign.
[ServiceContract(ProtectionLevel = ProtectionLevel.Sign)]
public interface ICalculator
{

    // Set the ProtectionLevel on this operation to None.
    [OperationContract(ProtectionLevel = ProtectionLevel.Sign)]
    double Add(double a, double b);
}

Protecting Fault Messages

public interface ICalculator
{
    // Set the ProtectionLevel on a FaultContractAttribute.
    [OperationContract(ProtectionLevel = ProtectionLevel.EncryptAndSign)]
    [FaultContract(
        typeof(MathFault),
        Action = @"http://localhost/Add",
        Name = "AddFault",
        Namespace = "http://contoso.com",
        ProtectionLevel = ProtectionLevel.EncryptAndSign)]
    double Add(double a, double b);
}

Protecting Message Parts

[MessageContract(ProtectionLevel = ProtectionLevel.EncryptAndSign)]
public class Company
{
    [MessageHeader(ProtectionLevel = ProtectionLevel.Sign)]
    public string CompanyName;

    [MessageBodyMember(ProtectionLevel = ProtectionLevel.EncryptAndSign)]
    public string CompanyID;
}