Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.IdentityModel/System/IdentityModel/Metadata/EncryptionMethod.cs

@@ -0,0 +1,50 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace System.IdentityModel.Metadata
+{
+    using System;
+
+    /// <summary>
+    /// Defines the encryption method.
+    /// </summary>
+    public class EncryptionMethod
+    {
+        Uri _algorithm;
+
+        /// <summary>
+        /// Constructs an encryption method with the algorithm.
+        /// </summary>
+        /// <param name="algorithm">The encryption algorithm.</param>
+        /// <exception cref="ArgumentNullException">If the algorithm is null.</exception>
+        public EncryptionMethod(Uri algorithm)
+        {
+            if (algorithm == null)
+            {
+                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("algorithm");
+            }
+
+            _algorithm = algorithm;
+        }
+
+        /// <summary>
+        /// Gets or sets the encryption method algorithm attribute.
+        /// </summary>
+        /// <exception cref="ArgumentNullException">If the new value is null.</exception>
+        public Uri Algorithm
+        {
+            get { return _algorithm; }
+
+            set
+            {
+                if (value == null)
+                {
+                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("value");
+                }
+
+                _algorithm = value;
+            }
+        }
+    }
+}