Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.ServiceModel/System/ServiceModel/Security/SignatureConfirmations.cs

@@ -0,0 +1,65 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace System.ServiceModel.Security
+{
+    using System;
+
+    class SignatureConfirmations
+    {
+        SignatureConfirmation[] confirmations;
+        int length;
+        bool encrypted;
+
+        struct SignatureConfirmation
+        {
+            public byte[] value;
+
+            public SignatureConfirmation(byte[] value)
+            {
+                this.value = value;
+            }
+        }
+
+        public SignatureConfirmations()
+        {
+            confirmations = new SignatureConfirmation[1];
+            length = 0;
+        }
+
+        public int Count
+        {
+            get { return length; }
+        }
+
+        public void AddConfirmation(byte[] value, bool encrypted)
+        {
+            if (confirmations.Length == length)
+            {
+                SignatureConfirmation[] newConfirmations = new SignatureConfirmation[length * 2];
+                Array.Copy(confirmations, 0, newConfirmations, 0, length);
+                confirmations = newConfirmations;
+            }
+            confirmations[length] = new SignatureConfirmation(value);
+            ++length;
+            this.encrypted |= encrypted;
+        }
+
+        public void GetConfirmation(int index, out byte[] value, out bool encrypted)
+        {
+            if (index < 0 || index >= length)
+            {
+                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("index", SR.GetString(SR.ValueMustBeInRange, 0, length)));
+            }
+
+            value = confirmations[index].value;
+            encrypted = this.encrypted;
+        }
+
+        public bool IsMarkedForEncryption
+        {
+            get { return this.encrypted; }
+        }
+    }
+}