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//-----------------------------------------------------------------------
// <copyright file="MessageProtections.cs" company="Outercurve Foundation">
// Copyright (c) Outercurve Foundation. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.Messaging {
using System;
/// <summary>
/// Categorizes the various types of channel binding elements so they can be properly ordered.
/// </summary>
/// <remarks>
/// The order of these enum values is significant.
/// Each successive value requires the protection offered by all the previous values
/// in order to be reliable. For example, message expiration is meaningless without
/// tamper protection to prevent a user from changing the timestamp on a message.
/// </remarks>
[Flags]
public enum MessageProtections {
/// <summary>
/// No protection.
/// </summary>
None = 0x0,
/// <summary>
/// A binding element that signs a message before sending and validates its signature upon receiving.
/// </summary>
TamperProtection = 0x1,
/// <summary>
/// A binding element that enforces a maximum message age between sending and processing on the receiving side.
/// </summary>
Expiration = 0x2,
/// <summary>
/// A binding element that prepares messages for replay detection and detects replayed messages on the receiving side.
/// </summary>
ReplayProtection = 0x4,
/// <summary>
/// All forms of protection together.
/// </summary>
All = TamperProtection | Expiration | ReplayProtection,
}
}
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