auth service and token service setup

src/Core/AuthService.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Bit.Core
+{
+    public class AuthService
+    {
+        private static AuthService _instance;
+
+        private AuthService() { }
+
+        public static AuthService Instance
+        {
+            get
+            {
+                if(_instance == null)
+                {
+                    _instance = new AuthService();
+                }
+
+                return _instance;
+            }
+        }
+
+        public bool Authenticated { get; set; }
+    }
+}

src/Core/Core.csproj

@@ -34,6 +34,7 @@
     <Reference Include="System.Core" />
     <Reference Include="System.DirectoryServices" />
     <Reference Include="System.DirectoryServices.Protocols" />
+    <Reference Include="System.Security" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />
@@ -42,6 +43,8 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="TokenService.cs" />
+    <Compile Include="AuthService.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

src/Core/TokenService.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Bit.Core
+{
+    public class TokenService
+    {
+        private static TokenService _instance;
+
+        private TokenService() { }
+
+        public static TokenService Instance
+        {
+            get
+            {
+                if(_instance == null)
+                {
+                    _instance = new TokenService();
+                }
+
+                return _instance;
+            }
+        }
+
+        public string AccessToken
+        {
+            get
+            {
+                // TODO: get bytes from disc
+                var encBytes = new byte[0];
+                var bytes = ProtectedData.Unprotect(encBytes, RandomEntropy(), DataProtectionScope.CurrentUser);
+                return Convert.ToBase64String(bytes);
+            }
+            set
+            {
+                var bytes = Convert.FromBase64String(value);
+                var encBytes = ProtectedData.Protect(bytes, RandomEntropy(), DataProtectionScope.CurrentUser);
+                // TODO: store bytes to disc
+            }
+        }
+
+        public string RefreshToken { get; set; }
+
+        private byte[] RandomEntropy()
+        {
+            var entropy = new byte[16];
+            new RNGCryptoServiceProvider().GetBytes(entropy);
+            return entropy;
+        }
+    }
+}