Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.ServiceModel/System/ServiceModel/MsmqEncryptionAlgorithm.cs

@@ -0,0 +1,34 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.ServiceModel
+{
+    using System.ServiceModel.Channels;
+
+    public enum MsmqEncryptionAlgorithm
+    {
+        RC4Stream,
+        Aes
+    }
+
+    static class MsmqEncryptionAlgorithmHelper
+    {
+        public static bool IsDefined(MsmqEncryptionAlgorithm algorithm)
+        {
+            return algorithm == MsmqEncryptionAlgorithm.RC4Stream || algorithm == MsmqEncryptionAlgorithm.Aes;
+        }
+
+        public static int ToInt32(MsmqEncryptionAlgorithm algorithm)
+        {
+            switch (algorithm)
+            {
+                case MsmqEncryptionAlgorithm.RC4Stream:
+                    return UnsafeNativeMethods.CALG_RC4;
+                case MsmqEncryptionAlgorithm.Aes:
+                    return UnsafeNativeMethods.CALG_AES;
+                default:
+                    return -1;
+            }
+        }
+    }
+}