diff --git a/Encryption/Class1.cs b/Encryption/Class1.cs
deleted file mode 100644
index 158f09b..0000000
--- a/Encryption/Class1.cs
+++ /dev/null
@@ -1,12 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Encryption
-{
-    public class Class1
-    {
-    }
-}
diff --git a/Encryption/Crypto.cs b/Encryption/Crypto.cs
new file mode 100644
index 0000000..085f08f
--- /dev/null
+++ b/Encryption/Crypto.cs
@@ -0,0 +1,67 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace Encryption
+{
+	/// <summary>
+	/// reference: https://msdn.microsoft.com/en-gb/library/system.security.cryptography.tripledescryptoserviceprovider(v=vs.110).aspx
+	/// </summary>
+	public class Crypto
+    {
+		public List<byte[]> GenerateKeyAndIV()
+		{
+			TripleDESCryptoServiceProvider tDES = new TripleDESCryptoServiceProvider();
+
+			return new List<byte[]> { tDES.Key, tDES.IV };
+		}
+
+		public string Encrypt(string s, byte[] key, byte[] iv)
+		{
+			try
+			{
+				MemoryStream mStream = new MemoryStream();
+				CryptoStream cStream = new CryptoStream(mStream, new TripleDESCryptoServiceProvider().CreateEncryptor(key, iv), CryptoStreamMode.Write);
+				byte[] toEncrypt = new UTF8Encoding().GetBytes(s);
+
+				cStream.Write(toEncrypt, 0, toEncrypt.Length);
+				cStream.FlushFinalBlock();
+
+				byte[] bytesEncrypted = mStream.ToArray();
+
+				cStream.Close();
+				mStream.Close();
+
+				return Convert.ToBase64String(bytesEncrypted, 0, bytesEncrypted.Length);
+			}
+			catch (CryptographicException e)
+			{
+				Console.WriteLine("Error: {0}", e.Message);
+				return null;
+			}
+		}
+
+		public string Decrypt(string s, byte[] key, byte[] iv)
+		{
+			try
+			{
+				byte[] bytesEncrypted = Convert.FromBase64String(s);
+				MemoryStream mStream = new MemoryStream(bytesEncrypted);
+				CryptoStream cStream = new CryptoStream(mStream, new TripleDESCryptoServiceProvider().CreateDecryptor(key, iv), CryptoStreamMode.Read);
+				byte[] fromEncrypt = new byte[s.Length];
+
+				cStream.Read(fromEncrypt, 0, fromEncrypt.Length);
+
+				return new UTF8Encoding().GetString(fromEncrypt);
+			}
+			catch (CryptographicException e)
+			{
+				Console.WriteLine("Error: {0}", e.Message);
+				return null;
+			}
+		}
+
+	}
+}
diff --git a/Encryption/Encryption.csproj b/Encryption/Encryption.csproj
index 9428211..da27bbb 100644
--- a/Encryption/Encryption.csproj
+++ b/Encryption/Encryption.csproj
@@ -1,10 +1,10 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <ProjectGuid>ed031a70-570f-4599-ac04-0453a997a6a4</ProjectGuid>
+    <ProjectGuid>{ED031A70-570F-4599-AC04-0453A997A6A4}</ProjectGuid>
     <OutputType>Library</OutputType>
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Encryption</RootNamespace>
@@ -30,24 +30,13 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="System"/>
-    
-    <Reference Include="System.Core"/>
-    <Reference Include="System.Xml.Linq"/>
-    <Reference Include="System.Data.DataSetExtensions"/>
-    
-    
-    <Reference Include="Microsoft.CSharp"/>
-    
-    <Reference Include="System.Data"/>
-    
-    <Reference Include="System.Net.Http"/>
-    
-    <Reference Include="System.Xml"/>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="Microsoft.CSharp" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="Class1.cs" />
+    <Compile Include="Crypto.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
- </Project>
+</Project>
\ No newline at end of file