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diff --git a/samples/DotNetOpenAuth.ApplicationBlock/AzureADHeader.cs b/samples/DotNetOpenAuth.ApplicationBlock/AzureADHeader.cs
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+++ b/samples/DotNetOpenAuth.ApplicationBlock/AzureADHeader.cs
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+//-----------------------------------------------------------------------
+// <copyright file="AzureADHeader.cs" company="Microsoft">
+//     Copyright (c) Microsoft. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.ApplicationBlock
+{
+	using System;
+	using System.ComponentModel;
+	using System.Diagnostics.CodeAnalysis;
+	using System.Runtime.Serialization;
+
+	/// <summary>
+	/// Contains header of AzureAD JWT token.
+	/// </summary>
+	/// <remarks>
+	/// Technically, this class doesn't need to be public, but because we want to make it serializable in medium trust, it has to be public.
+	/// </remarks>
+	[DataContract]
+	[EditorBrowsable(EditorBrowsableState.Never)]
+	[SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "AzureAD", Justification = "Brand name")]
+
+	public class AzureADHeader
+	{
+		#region Public Properties
+
+		/// <summary>
+		/// Gets or sets the type of token. Will always be JWT
+		/// </summary>
+		/// <value> The type of token. </value>
+		[DataMember(Name = "typ")]
+		public string Typ { get; set; }
+
+		/// <summary>
+		/// Gets or sets the algo of the header.
+		/// </summary>
+		/// <value> The algo of encoding. </value>
+		[DataMember(Name = "alg")]
+		public string Alg { get; set; }
+
+		/// <summary>
+		/// Gets or sets the thumbprint of the header.
+		/// </summary>
+		/// <value> The thumbprint of the cert used to encode. </value>
+		[DataMember(Name = "x5t")]
+		public string X5t { get; set; }
+
+		#endregion
+	}
+}