1 files changed, 34 insertions, 0 deletions
diff --git a/src/DotNetOAuth/Messaging/InvalidSignatureException.cs b/src/DotNetOAuth/Messaging/InvalidSignatureException.cs
new file mode 100644
index 0000000..1b66a3d
--- /dev/null
+++ b/src/DotNetOAuth/Messaging/InvalidSignatureException.cs
@@ -0,0 +1,34 @@
+//-----------------------------------------------------------------------
+// <copyright file="InvalidSignatureException.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOAuth.Messaging {
+	using System;
+
+	/// <summary>
+	/// An exception thrown when a signed message does not pass signature validation.
+	/// </summary>
+	[Serializable]
+	internal class InvalidSignatureException : ProtocolException {
+		/// <summary>
+		/// Initializes a new instance of the <see cref="InvalidSignatureException"/> class.
+		/// </summary>
+		/// <param name="faultedMessage">The message with the invalid signature.</param>
+		public InvalidSignatureException(ISignedProtocolMessage faultedMessage)
+			: base(MessagingStrings.SignatureInvalid, faultedMessage) { }
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="InvalidSignatureException"/> class.
+		/// </summary>
+		/// <param name="info">The <see cref="System.Runtime.Serialization.SerializationInfo"/> 
+		/// that holds the serialized object data about the exception being thrown.</param>
+		/// <param name="context">The System.Runtime.Serialization.StreamingContext 
+		/// that contains contextual information about the source or destination.</param>
+		protected InvalidSignatureException(
+		  System.Runtime.Serialization.SerializationInfo info,
+		  System.Runtime.Serialization.StreamingContext context)
+			: base(info, context) { }
+	}
+}