Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.IdentityModel/System/IdentityModel/Tokens/AuthenticationMethods.cs

@@ -0,0 +1,31 @@
+//------------------------------------------------------------------------------
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+namespace System.IdentityModel.Tokens
+{
+    /// <summary>
+    /// Defines constants for SAML authentication methods.
+    /// </summary>
+    public static class AuthenticationMethods
+    {
+#pragma warning disable 1591
+        public const string Namespace = "http://schemas.microsoft.com/ws/2008/06/identity/authenticationmethod/";
+
+        public const string HardwareToken           = Namespace + "hardwaretoken";
+        public const string Kerberos                = Namespace + "kerberos";
+        public const string Password                = Namespace + "password";
+        public const string Pgp                     = Namespace + "pgp";
+        public const string SecureRemotePassword    = Namespace + "secureremotepassword";
+        public const string Signature               = Namespace + "signature";
+        public const string Smartcard               = Namespace + "smartcard";
+        public const string SmartcardPki            = Namespace + "smartcardpki";
+        public const string Spki                    = Namespace + "spki";
+        public const string TlsClient               = Namespace + "tlsclient";
+        public const string Unspecified             = Namespace + "unspecified";
+        public const string Windows                 = Namespace + "windows";
+        public const string Xkms                    = Namespace + "xkms";
+        public const string X509                    = Namespace + "x509";
+#pragma warning restore 1591
+    }
+}