Removed unused/unnecessary code

mRemoteNGTests/Security/SecureStringExtensionsTests.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Security;
+using mRemoteNG.Security;
+using NUnit.Framework;
+using NUnit.Framework.Constraints;
+
+
+namespace mRemoteNGTests.Security
+{
+    public class SecureStringExtensionsTests
+    {
+        [Test]
+        public void ConvertToSecureString()
+        {
+            var securedString = "MySecureString".ConvertToSecureString();
+            Assert.That(securedString.Length, Is.GreaterThan(0));
+        }
+
+        [Test]
+        public void ConvertToUnsecureString()
+        {
+            var originalText = "MySecureString";
+            var securedString = originalText.ConvertToSecureString();
+            var unsecuredString = securedString.ConvertToUnsecureString();
+            Assert.That(unsecuredString, Is.EqualTo(originalText));
+        }
+
+        [Test]
+        public void ConvertToSecureStringOnNullStringThrowsException()
+        {
+            string myString = null;
+            Assert.Throws<ArgumentNullException>(() => myString.ConvertToSecureString());
+        }
+
+        [Test]
+        public void ConvertToUnsecureStringOnNullStringThrowsException()
+        {
+            SecureString secureString = null;
+            Assert.Throws<ArgumentNullException>(() => secureString.ConvertToUnsecureString());
+        }
+    }
+}

mRemoteNGTests/mRemoteNGTests.csproj

@@ -118,6 +118,7 @@
     <Compile Include="Connection\Protocol\ProtocolListTests.cs" />
     <Compile Include="Security\Authentication\PasswordAuthenticatorTests.cs" />
     <Compile Include="Security\KeyDerivation\Pkcs5S2KeyGeneratorTests.cs" />
+    <Compile Include="Security\SecureStringExtensionsTests.cs" />
     <Compile Include="Tools\ExternalToolsArgumentParserTests.cs" />
     <Compile Include="Tree\ConnectionTreeDragAndDropHandlerTests.cs" />
     <Compile Include="Tree\ConnectionTreeModelTests.cs" />

mRemoteV1/Security/SecureStringExtensions.cs

@@ -31,17 +31,6 @@ namespace mRemoteNG.Security
             }
         }
 
-        public static string ConvertToEncryptedString(this SecureString secureString)
-        {
-            return "TEST ENCRYPTION";
-        }
-
-        public static SecureString ConvertFromEncryptedString(this SecureString secureString, string encryptedString)
-        {
-            var unencryptedString = encryptedString;
-            return unencryptedString.ConvertToSecureString();
-        }
-
         public static SecureString ConvertToSecureString(this string unsecuredPassword)
         {
             if (unsecuredPassword == null)