diff --git a/etc/deps/cpu-capabilities/cpu-capabilities-x64.dll b/etc/deps/cpu-capabilities/cpu-capabilities-x64.dll
new file mode 100644
index 0000000..d483af3
Binary files /dev/null and b/etc/deps/cpu-capabilities/cpu-capabilities-x64.dll differ
diff --git a/etc/deps/cpu-capabilities/cpu-capabilities-x86.dll b/etc/deps/cpu-capabilities/cpu-capabilities-x86.dll
new file mode 100644
index 0000000..7a47a83
Binary files /dev/null and b/etc/deps/cpu-capabilities/cpu-capabilities-x86.dll differ
diff --git a/frontend/SlunkCrypt.vcxproj b/frontend/SlunkCrypt.vcxproj
index 4a01308..89b4589 100644
--- a/frontend/SlunkCrypt.vcxproj
+++ b/frontend/SlunkCrypt.vcxproj
@@ -209,7 +209,7 @@
     <LinkIncremental>false</LinkIncremental>
     <OutDir>$(SolutionDir)bin\$(Configuration)\</OutDir>
     <IntDir>$(SolutionDir)obj\$(Configuration)\$(PlatformShortName)\$(ProjectName)\</IntDir>
-    <TargetName>slunkcrypt-cli-$(PlatformShortName)</TargetName>
+    <TargetName>slunkcrypt-cli-$(PlatformShortName)-sse2</TargetName>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release_WithDbgInfo|Win32'">
     <LinkIncremental>false</LinkIncremental>
@@ -239,7 +239,7 @@
     <LinkIncremental>false</LinkIncremental>
     <OutDir>$(SolutionDir)bin\$(Configuration)\</OutDir>
     <IntDir>$(SolutionDir)obj\$(Configuration)\$(PlatformShortName)\$(ProjectName)\</IntDir>
-    <TargetName>slunkcrypt-cli-$(PlatformShortName)</TargetName>
+    <TargetName>slunkcrypt-cli-$(PlatformShortName)-sse2</TargetName>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release_WithDbgInfo|x64'">
     <LinkIncremental>false</LinkIncremental>
@@ -421,6 +421,7 @@
       <FloatingPointModel>Fast</FloatingPointModel>
       <DisableSpecificWarnings>4706;4204</DisableSpecificWarnings>
       <CreateHotpatchableImage>false</CreateHotpatchableImage>
+      <EnableEnhancedInstructionSet>NotSet</EnableEnhancedInstructionSet>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
diff --git a/gui/Process/SlunkCryptRunner.cs b/gui/Process/SlunkCryptRunner.cs
index 15c6722..68294a6 100644
--- a/gui/Process/SlunkCryptRunner.cs
+++ b/gui/Process/SlunkCryptRunner.cs
@@ -25,6 +25,7 @@ namespace com.muldersoft.slunkcrypt.gui.process
         private const string COMMAND_DECRYPT = "-d";
 
         private static readonly Regex RX_PROGRESS = new Regex(@"(\d+)\.(\d)%", RegexOptions.Compiled);
+
         private readonly FileStream m_executableFile;
 
         // =============================================================================
@@ -77,15 +78,20 @@ namespace com.muldersoft.slunkcrypt.gui.process
         {
             FileStream executableFile = null;
             string appBaseDirectory = AppDomain.CurrentDomain.BaseDirectory;
-            if (Environment.Is64BitOperatingSystem)
+            CPUFeatures cpuFeatures = CPUFeatures.Features;
+            if (cpuFeatures.x64 && CheckExecutableFile(ref executableFile, appBaseDirectory, "x64"))
             {
-                if (CheckExecutableFile(ref executableFile, appBaseDirectory, "x64"))
-                {
-                    return executableFile;
-                }
+                Trace.Assert(executableFile != null);
+                return executableFile;
+            }
+            if (cpuFeatures.sse2 && CheckExecutableFile(ref executableFile, appBaseDirectory, "x86-sse2"))
+            {
+                Trace.Assert(executableFile != null);
+                return executableFile;
             }
             if (CheckExecutableFile(ref executableFile, appBaseDirectory, "x86"))
             {
+                Trace.Assert(executableFile != null);
                 return executableFile;
             }
             throw new ExecutableNotFoundException("SlunkCrypt executable file not found!", FILENAME_FORMAT);
@@ -140,7 +146,7 @@ namespace com.muldersoft.slunkcrypt.gui.process
             return double.NaN;
         }
 
-        private string GetCommandString(Mode mode)
+        private static string GetCommandString(Mode mode)
         {
             switch(mode)
             {
diff --git a/gui/Properties/AssemblyInfo.cs b/gui/Properties/AssemblyInfo.cs
index 18fe4fc..c8c31b5 100644
--- a/gui/Properties/AssemblyInfo.cs
+++ b/gui/Properties/AssemblyInfo.cs
@@ -19,5 +19,5 @@ using System.Windows;
 [assembly: ComVisible(false)]
 [assembly: ThemeInfo(ResourceDictionaryLocation.None, ResourceDictionaryLocation.SourceAssembly)]
 
-[assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("1.1.*")]
+[assembly: AssemblyFileVersion("1.1.0.0")]
diff --git a/gui/SlunkCryptGUI.csproj b/gui/SlunkCryptGUI.csproj
index 55426de..9c7ae44 100644
--- a/gui/SlunkCryptGUI.csproj
+++ b/gui/SlunkCryptGUI.csproj
@@ -79,8 +79,10 @@
     <Compile Include="Controls\PasswordToggleBox.xaml.cs">
       <DependentUpon>PasswordToggleBox.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Utilities\CPUFeatures.cs" />
     <Compile Include="Process\SlunkCryptRunner.cs" />
     <Compile Include="Utilities\BusyManager.cs" />
+    <Compile Include="Utilities\CPU\CPUCapabilities.cs" />
     <Compile Include="Utilities\PathUtils.cs" />
     <Compile Include="Utilities\SecureRandom.cs" />
     <Compile Include="Utilities\SystemMenu.cs" />
@@ -187,6 +189,9 @@
     <Resource Include="Resources\Refresh.png" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <PropertyGroup>
+    <PostBuildEvent>copy /Y "$(SolutionDir)\etc\deps\cpu-capabilities\*.dll" "$(TargetDir)"</PostBuildEvent>
+  </PropertyGroup>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/gui/SlunkCryptGUI.xaml.cs b/gui/SlunkCryptGUI.xaml.cs
index 20a89bc..d7a098a 100644
--- a/gui/SlunkCryptGUI.xaml.cs
+++ b/gui/SlunkCryptGUI.xaml.cs
@@ -58,9 +58,9 @@ namespace com.muldersoft.slunkcrypt.gui
         {
             InitializeComponent();
             m_defaultStatusText = Label_Status.Text;
-            m_dispatcherTimer = new DispatcherTimer(DispatcherPriority.ApplicationIdle, Dispatcher);
+            m_dispatcherTimer = new DispatcherTimer(DispatcherPriority.SystemIdle, Dispatcher);
             m_dispatcherTimer.Tick += DispatcherTimer_Tick;
-            m_dispatcherTimer.Interval = TimeSpan.FromMilliseconds(150);
+            m_dispatcherTimer.Interval = TimeSpan.FromMilliseconds(125);
             m_logFileReadOnly = new ReadOnlyObservableCollection<string>(m_logFile);
         }
 
@@ -794,6 +794,7 @@ namespace com.muldersoft.slunkcrypt.gui
 
         private static string CreateAboutText()
         {
+            CPUFeatures cpuFeatures = CPUFeatures.Features;
             return new StringBuilder()
                 .AppendLine("SlunkCrypt, by LoRd_MuldeR <MuldeR2@GMX.de>")
                 .AppendLine(VersionInfo.VersionStr)
@@ -803,10 +804,11 @@ namespace com.muldersoft.slunkcrypt.gui
                 .AppendLine("https://gitlab.com/lord_mulder/slunkcrypt/")
                 .AppendLine()
                 .AppendLine("Operating System: " + Environment.OSVersion.VersionString)
+                .AppendLine(string.Format("Operating System Bitness: {0:D}, Process Bitness: {1:D}", Environment.Is64BitOperatingSystem ? 64 : 32, Environment.Is64BitProcess ? 64 : 32))
                 .AppendLine(".NET Runtime Version: " + Environment.Version)
-                .AppendLine(string.Format("Processor Count: {0:D}, System Bitness: {1:D}, Process Bitness: {2:D}", Environment.ProcessorCount, Environment.Is64BitOperatingSystem ? 64 : 32, Environment.Is64BitProcess ? 64 : 32))
+                .AppendLine(string.Format("CPU Count: {0:D}, Architecture: {1}, SSE2 Supported: {2}", Environment.ProcessorCount, cpuFeatures.x64 ? "x64" : "x86", cpuFeatures.sse2 ? "Yes" : "No"))
                 .AppendLine()
-                .AppendLine("Using “Silk” icons, by Mark James (famfamfam.com)")
+                .AppendLine("Using “Silk” icons, by Mark James")
                 .ToString();
         }
 
@@ -976,10 +978,5 @@ namespace com.muldersoft.slunkcrypt.gui
             Keyboard.ClearFocus();
             element.Focus();
         }
-
-        private static string TrimToEmpty(string str)
-        {
-            return string.IsNullOrEmpty(str) ? string.Empty : str.Trim();
-        }
     }
 }
diff --git a/gui/Utilities/CPU/CPUCapabilities.cs b/gui/Utilities/CPU/CPUCapabilities.cs
new file mode 100644
index 0000000..a9df899
--- /dev/null
+++ b/gui/Utilities/CPU/CPUCapabilities.cs
@@ -0,0 +1,378 @@
+/******************************************************************************/
+/* CPUCapabilities.NET, by LoRd_MuldeR <MuldeR2@GMX.de>                       */
+/* This work has been released under the CC0 1.0 Universal license!           */
+/******************************************************************************/
+
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace com.muldersoft.slunkcrypt.gui.utils.cpu
+{
+    // ==================================================================
+    // CPU Flags
+    // ==================================================================
+
+    public enum CPUArchitecture : uint
+    {
+        CPU_ARCH_X86 = 0x00000001,
+        CPU_ARCH_X64 = 0x00000002
+    }
+
+    [Flags]
+    public enum CPUCapabilities : ulong
+    {
+        CPU_3DNOW            = 0x0000000000000001,
+        CPU_3DNOWEXT         = 0x0000000000000002,
+        CPU_ADX              = 0x0000000000000004,
+        CPU_AES              = 0x0000000000000008,
+        CPU_AVX              = 0x0000000000000010,
+        CPU_AVX2             = 0x0000000000000020,
+        CPU_AVX512_BITALG    = 0x0000000000000040,
+        CPU_AVX512_BW        = 0x0000000000000080,
+        CPU_AVX512_CD        = 0x0000000000000100,
+        CPU_AVX512_DQ        = 0x0000000000000200,
+        CPU_AVX512_ER        = 0x0000000000000400,
+        CPU_AVX512_F         = 0x0000000000000800,
+        CPU_AVX512_IFMA      = 0x0000000000001000,
+        CPU_AVX512_PF        = 0x0000000000002000,
+        CPU_AVX512_VBMI      = 0x0000000000004000,
+        CPU_AVX512_VBMI2     = 0x0000000000008000,
+        CPU_AVX512_VL        = 0x0000000000010000,
+        CPU_AVX512_VNNI      = 0x0000000000020000,
+        CPU_AVX512_VPOPCNTDQ = 0x0000000000040000,
+        CPU_BMI1             = 0x0000000000080000,
+        CPU_BMI2             = 0x0000000000100000,
+        CPU_CLFSH            = 0x0000000000200000,
+        CPU_CMOV             = 0x0000000000400000,
+        CPU_CX16             = 0x0000000000800000,
+        CPU_CX8              = 0x0000000001000000,
+        CPU_ERMS             = 0x0000000002000000,
+        CPU_FMA3             = 0x0000000004000000,
+        CPU_FMA4             = 0x0000000008000000,
+        CPU_FPU              = 0x0000000010000000,
+        CPU_FSGSBASE         = 0x0000000020000000,
+        CPU_FXSR             = 0x0000000040000000,
+        CPU_HLE              = 0x0000000080000000,
+        CPU_HTT              = 0x0000000100000000,
+        CPU_INVPCID          = 0x0000000200000000,
+        CPU_LAHF             = 0x0000000400000000,
+        CPU_LZCNT            = 0x0000000800000000,
+        CPU_MMX              = 0x0000001000000000,
+        CPU_MMXEXT           = 0x0000002000000000,
+        CPU_MONITOR          = 0x0000004000000000,
+        CPU_MOVBE            = 0x0000008000000000,
+        CPU_MSR              = 0x0000010000000000,
+        CPU_OSXSAVE          = 0x0000020000000000,
+        CPU_PCLMULQDQ        = 0x0000040000000000,
+        CPU_POPCNT           = 0x0000080000000000,
+        CPU_PREFETCHWT1      = 0x0000100000000000,
+        CPU_RDRND            = 0x0000200000000000,
+        CPU_RDSEED           = 0x0000400000000000,
+        CPU_RDTSCP           = 0x0000800000000000,
+        CPU_RTM              = 0x0001000000000000,
+        CPU_SEP              = 0x0002000000000000,
+        CPU_SHA              = 0x0004000000000000,
+        CPU_SSE              = 0x0008000000000000,
+        CPU_SSE2             = 0x0010000000000000,
+        CPU_SSE3             = 0x0020000000000000,
+        CPU_SSE41            = 0x0040000000000000,
+        CPU_SSE42            = 0x0080000000000000,
+        CPU_SSE4a            = 0x0100000000000000,
+        CPU_SSSE3            = 0x0200000000000000,
+        CPU_SYSCALL          = 0x0400000000000000,
+        CPU_TBM              = 0x0800000000000000,
+        CPU_TSC              = 0x1000000000000000,
+        CPU_XOP              = 0x2000000000000000,
+        CPU_XSAVE            = 0x4000000000000000
+    }
+
+    // ==================================================================
+    // CPUInformation
+    // ==================================================================
+
+    public struct CPUInformation
+    {
+        public CPUInformation(byte type, byte familyExt, byte family, byte modelExt, byte model, byte stepping)
+        {
+            Type         = type;
+            RawFamily    = family;
+            RawFamilyExt = familyExt;
+            RawModel     = model;
+            RawModelExt  = modelExt;
+            Stepping     = stepping;
+        }
+
+        public byte Type         { get; }
+        public byte RawFamily    { get; }
+        public byte RawFamilyExt { get; }
+        public byte RawModel     { get; }
+        public byte RawModelExt  { get; }
+        public byte Stepping     { get; }
+
+        public uint Family
+        {
+            get { return (RawFamily == 15U) ? (((uint)RawFamilyExt) + RawFamily) : RawFamily; }
+        }
+
+        public uint Model
+        {
+            get { return ((RawFamily == 6U) || (RawFamily == 15U)) ? ((((uint)RawModelExt) << 4) + RawModel) : RawModel; }
+        }
+
+        public override String ToString()
+        {
+            return String.Format("Type={0}, Family={1}, Model={2}, Stepping={3}", Type, Family, Model, Stepping);
+        }
+    }
+
+    // ==================================================================
+    // CPU class
+    // ==================================================================
+
+    public static class CPU
+    {
+        private static readonly Lazy<bool> m_x64Process = new Lazy<bool>(() => Environment.Is64BitProcess);
+        private static readonly Lazy<CPUArchitecture> m_architecture = new Lazy<CPUArchitecture>(GetCPUArchitecture);
+        private static readonly Lazy<uint> m_count = new Lazy<uint>(GetCPUCount);
+        private static readonly Lazy<CPUInformation> m_information = new Lazy<CPUInformation>(GetCPUInformation);
+        private static readonly Lazy<string> m_vendor = new Lazy<string>(GetCPUVendorString);
+        private static readonly Lazy<CPUCapabilities> m_capabilities = new Lazy<CPUCapabilities>(GetCPUCapabilities);
+        private static readonly Lazy<Tuple<ushort, ushort>> m_libraryVersion = new Lazy<Tuple<ushort, ushort>>(GetCPULibraryVersion);
+        private static readonly Lazy<string> m_brand = new Lazy<string>(GetCPUBrandString);
+
+        private static readonly Tuple<ushort, ushort> REQUIRED_LIBRARY_VERSION = Tuple.Create<ushort, ushort>(2, 0);
+
+        // ------------------------------------------------------------------
+        // Properties
+        // ------------------------------------------------------------------
+
+        public static bool IsX64Process
+        {
+            get { return m_x64Process.Value; }
+        }
+
+        public static CPUArchitecture Architecture
+        {
+            get { return m_architecture.Value; }
+        }
+
+        public static uint Count
+        {
+            get { return m_count.Value; }
+        }
+
+        public static string Vendor
+        {
+            get { return m_vendor.Value; }
+        }
+
+        public static CPUInformation Information
+        {
+            get { return m_information.Value; }
+        }
+
+        public static CPUCapabilities Capabilities
+        {
+            get { return m_capabilities.Value; }
+        }
+
+        public static string Brand
+        {
+            get { return m_brand.Value; }
+        }
+
+        public static Tuple<ushort, ushort> LibraryVersion
+        {
+            get { return m_libraryVersion.Value; }
+        }
+
+        // ------------------------------------------------------------------
+        // Initialization methods
+        // ------------------------------------------------------------------
+
+        private static CPUArchitecture GetCPUArchitecture()
+        {
+            try
+            {
+                VerifyLibraryVersion();
+                uint value = IsX64Process ? Internal.GetCPUArchitectureX64() : Internal.GetCPUArchitectureX86();
+                return (CPUArchitecture)value;
+            }
+            catch (Exception e)
+            {
+                throw new SystemException("Failed to determine CPU architecture!", e);
+            }
+        }
+
+        private static uint GetCPUCount()
+        {
+            try
+            {
+                VerifyLibraryVersion();
+                return IsX64Process ? Internal.GetCPUCountX64() : Internal.GetCPUCountX86();
+            }
+            catch (Exception e)
+            {
+                throw new SystemException("Failed to determine CPU count!", e);
+            }
+        }
+
+        private static string GetCPUVendorString()
+        {
+            const uint BUFFER_SIZE = 13;
+            try
+            {
+                byte[] buffer = new byte[BUFFER_SIZE];
+                VerifyLibraryVersion();
+                if (IsX64Process ? Internal.GetCPUVendorStringX64(buffer, BUFFER_SIZE) : Internal.GetCPUVendorStringX86(buffer, BUFFER_SIZE))
+                {
+                    return AllocateAsciiString(buffer);
+                }
+                return string.Empty;
+            }
+            catch (Exception e)
+            {
+                throw new SystemException("Failed to determine CPU vendor string!", e);
+            }
+        }
+
+        private static CPUInformation GetCPUInformation()
+        {
+            try
+            {
+                byte type, familyExt, family, modelExt, model, stepping;
+                VerifyLibraryVersion();
+                if (IsX64Process ? Internal.GetCPUInformationX64(out type, out familyExt, out family, out modelExt, out model, out stepping) : Internal.GetCPUInformationX86(out type, out familyExt, out family, out modelExt, out model, out stepping))
+                {
+                    return new CPUInformation(type, familyExt, family, modelExt, model, stepping);
+                }
+                return new CPUInformation(0, 0, 0, 0, 0, 0);
+            }
+            catch (Exception e)
+            {
+                throw new SystemException("Failed to determine CPU family and model!", e);
+            }
+        }
+
+        private static CPUCapabilities GetCPUCapabilities()
+        {
+            try
+            {
+                VerifyLibraryVersion();
+                ulong value = IsX64Process ? Internal.GetCPUCapabilitiesX64() : Internal.GetCPUCapabilitiesX86();
+                return (CPUCapabilities)value;
+            }
+            catch (Exception e)
+            {
+                throw new SystemException("Failed to determine CPU capabilities!", e);
+            }
+        }
+
+        private static string GetCPUBrandString()
+        {
+            const uint BUFFER_SIZE = 48;
+            try
+            {
+                byte[] buffer = new byte[BUFFER_SIZE];
+                VerifyLibraryVersion();
+                if (IsX64Process ? Internal.GetCPUBrandStringX64(buffer, BUFFER_SIZE) : Internal.GetCPUBrandStringX86(buffer, BUFFER_SIZE))
+                {
+                    return AllocateAsciiString(buffer);
+                }
+                return string.Empty;
+            }
+            catch (Exception e)
+            {
+                throw new SystemException("Failed to determine CPU brand string!", e);
+            }
+        }
+
+        private static Tuple<ushort, ushort> GetCPULibraryVersion()
+        {
+            try
+            {
+                uint value = IsX64Process ? Internal.GetCPULibraryVersionX64() : Internal.GetCPULibraryVersionX86();
+                return Tuple.Create((ushort)((value >> 16) & 0xFFFF), (ushort)(value & 0xFFFF));
+            }
+            catch (Exception e)
+            {
+                throw new SystemException("Failed to determine CPU library version!", e);
+            }
+        }
+
+        // ------------------------------------------------------------------
+        // P/Invoke methods
+        // ------------------------------------------------------------------
+
+        private class Internal
+        {
+            const string DLL_NAME_X86 = "cpu-capabilities-x86.dll";
+            const string DLL_NAME_X64 = "cpu-capabilities-x64.dll";
+
+            /* GetCPUArchitecture() */
+            [DllImport(DLL_NAME_X64, CallingConvention = CallingConvention.Cdecl)]
+            public static extern uint GetCPUArchitectureX64();
+            [DllImport(DLL_NAME_X86, CallingConvention = CallingConvention.Cdecl)]
+            public static extern uint GetCPUArchitectureX86();
+
+            /* GetCPUCount() */
+            [DllImport(DLL_NAME_X64, CallingConvention = CallingConvention.Cdecl)]
+            public static extern uint GetCPUCountX64();
+            [DllImport(DLL_NAME_X86, CallingConvention = CallingConvention.Cdecl)]
+            public static extern uint GetCPUCountX86();
+
+            /* GetCPUVendorString() */
+            [DllImport(DLL_NAME_X64, CallingConvention = CallingConvention.Cdecl)]
+            public static extern bool GetCPUVendorStringX64([Out] byte[] buffer, uint size);
+            [DllImport(DLL_NAME_X86, CallingConvention = CallingConvention.Cdecl)]
+            public static extern bool GetCPUVendorStringX86([Out] byte[] buffer, uint size);
+
+            /* GetCPUInformation() */
+            [DllImport(DLL_NAME_X64, CallingConvention = CallingConvention.Cdecl)]
+            public static extern bool GetCPUInformationX64(out byte type, out byte familyExt, out byte family, out byte modelExt, out byte model, out byte stepping);
+            [DllImport(DLL_NAME_X86, CallingConvention = CallingConvention.Cdecl)]
+            public static extern bool GetCPUInformationX86(out byte type, out byte familyExt, out byte family, out byte modelExt, out byte model, out byte stepping);
+
+            /* GetCPUCapabilities() */
+            [DllImport(DLL_NAME_X64, CallingConvention = CallingConvention.Cdecl)]
+            public static extern ulong GetCPUCapabilitiesX64();
+            [DllImport(DLL_NAME_X86, CallingConvention = CallingConvention.Cdecl)]
+            public static extern ulong GetCPUCapabilitiesX86();
+
+            /* GetCPUBrandString() */
+            [DllImport(DLL_NAME_X64, CallingConvention = CallingConvention.Cdecl)]
+            public static extern bool GetCPUBrandStringX64([Out] byte[] buffer, uint size);
+            [DllImport(DLL_NAME_X86, CallingConvention = CallingConvention.Cdecl)]
+            public static extern bool GetCPUBrandStringX86([Out] byte[] buffer, uint size);
+
+            /* GetCPULibraryVersion() */
+            [DllImport(DLL_NAME_X64, CallingConvention = CallingConvention.Cdecl)]
+            public static extern uint GetCPULibraryVersionX64();
+            [DllImport(DLL_NAME_X86, CallingConvention = CallingConvention.Cdecl)]
+            public static extern uint GetCPULibraryVersionX86();
+        }
+
+        // ------------------------------------------------------------------
+        // Utility methods
+        // ------------------------------------------------------------------
+
+        private static void VerifyLibraryVersion()
+        {
+            if ((LibraryVersion.Item1 != REQUIRED_LIBRARY_VERSION.Item1) || (LibraryVersion.Item2 < REQUIRED_LIBRARY_VERSION.Item2))
+            {
+                throw new InvalidOperationException(string.Format("CPU library version {0} is not supported! (required version: {1})", m_libraryVersion.Value.Item1, REQUIRED_LIBRARY_VERSION));
+            }
+        }
+
+        private static string AllocateAsciiString(byte[] buffer)
+        {
+            int index = Array.IndexOf(buffer, (byte)0);
+            if (index >= 0)
+            {
+                return (index > 0) ? Encoding.ASCII.GetString(buffer, 0, index) : string.Empty;
+            }
+            return Encoding.ASCII.GetString(buffer);
+        }
+    }
+}
diff --git a/gui/Utilities/CPUFeatures.cs b/gui/Utilities/CPUFeatures.cs
new file mode 100644
index 0000000..bdf035e
--- /dev/null
+++ b/gui/Utilities/CPUFeatures.cs
@@ -0,0 +1,41 @@
+/******************************************************************************/
+/* SlunkCrypt, by LoRd_MuldeR <MuldeR2@GMX.de>                                */
+/* This work has been released under the CC0 1.0 Universal license!           */
+/******************************************************************************/
+
+using System;
+using com.muldersoft.slunkcrypt.gui.utils.cpu;
+
+namespace com.muldersoft.slunkcrypt.gui.process
+{
+    struct CPUFeatures
+    {
+        public readonly bool x64;
+        public readonly bool sse2;
+
+        private static readonly Lazy<CPUFeatures> cpuFeatures = new Lazy<CPUFeatures>(DetectFeatures);
+
+        public static CPUFeatures Features
+        {
+            get { return cpuFeatures.Value; }
+        }
+
+        public CPUFeatures(bool x64, bool sse2)
+        {
+            this.x64 = x64;
+            this.sse2 = sse2;
+        }
+
+        private static CPUFeatures DetectFeatures()
+        {
+            try
+            {
+                return new CPUFeatures(CPU.Architecture.Equals(CPUArchitecture.CPU_ARCH_X64), CPU.Capabilities.HasFlag(CPUCapabilities.CPU_SSE2));
+            }
+            catch
+            {
+                return new CPUFeatures(false, false); /*fallback*/
+            }
+        }
+    }
+}
diff --git a/gui/Utilities/ProcessRunner.cs b/gui/Utilities/ProcessRunner.cs
index 4f23b40..75f9c5e 100644
--- a/gui/Utilities/ProcessRunner.cs
+++ b/gui/Utilities/ProcessRunner.cs
@@ -8,7 +8,6 @@ using System.Collections.Generic;
 using System.Collections.Specialized;
 using System.Diagnostics;
 using System.IO;
-using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Threading;
diff --git a/libslunkcrypt/libSlunkCrypt.vcxproj b/libslunkcrypt/libSlunkCrypt.vcxproj
index 2d48896..a02c7af 100644
--- a/libslunkcrypt/libSlunkCrypt.vcxproj
+++ b/libslunkcrypt/libSlunkCrypt.vcxproj
@@ -192,7 +192,7 @@
     <LinkIncremental>false</LinkIncremental>
     <OutDir>$(SolutionDir)bin\$(Configuration)\</OutDir>
     <IntDir>$(SolutionDir)obj\$(Configuration)\$(PlatformShortName)\$(ProjectName)\</IntDir>
-    <TargetName>libslunkcrypt-1-$(PlatformShortName)</TargetName>
+    <TargetName>libslunkcrypt-1-$(PlatformShortName)-sse2</TargetName>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release_WithDbgInfo|Win32'">
     <LinkIncremental>false</LinkIncremental>
@@ -222,7 +222,7 @@
     <LinkIncremental>false</LinkIncremental>
     <OutDir>$(SolutionDir)bin\$(Configuration)\</OutDir>
     <IntDir>$(SolutionDir)obj\$(Configuration)\$(PlatformShortName)\$(ProjectName)\</IntDir>
-    <TargetName>libslunkcrypt-1-$(PlatformShortName)</TargetName>
+    <TargetName>libslunkcrypt-1-$(PlatformShortName)-sse2</TargetName>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release_WithDbgInfo|x64'">
     <LinkIncremental>false</LinkIncremental>
@@ -416,6 +416,7 @@
       <FloatingPointModel>Fast</FloatingPointModel>
       <DisableSpecificWarnings>4706;4204</DisableSpecificWarnings>
       <CreateHotpatchableImage>false</CreateHotpatchableImage>
+      <EnableEnhancedInstructionSet>NotSet</EnableEnhancedInstructionSet>
     </ClCompile>
     <Link>
       <SubSystem>
diff --git a/libslunkcrypt/src/version.h b/libslunkcrypt/src/version.h
index 5f95240..2041aa2 100644
--- a/libslunkcrypt/src/version.h
+++ b/libslunkcrypt/src/version.h
@@ -7,7 +7,7 @@
 #define INC_SLUNKCRYPT_VERSION_H
 
 #define LIB_VERSION_MAJOR 1
-#define LIB_VERSION_MINOR 0
+#define LIB_VERSION_MINOR 1
 #define LIB_VERSION_PATCH 0
 
 #endif
diff --git a/mk-profiled.cmd b/mk-profiled.cmd
index b3c77e0..a48fc7b 100644
--- a/mk-profiled.cmd
+++ b/mk-profiled.cmd
@@ -17,6 +17,7 @@ for %%p in (x86,x64) do (
 	for %%c in (Release,Release_SSE2) do (
 		if not "%%p::%%c" == "x64::Release_SSE2" (
 			set "TEMP_NAME=!RANDOM!-!RANDOM!"
+			if "%%c"=="Release_SSE2" (set "SUFFIX=-sse2") else (set "SUFFIX=")
 			%ECHO% white "\n------------------------------------------------------------------------------"
 			%ECHO% white "Clean [%%p:%%c]"
 			%ECHO% white "------------------------------------------------------------------------------\n"
@@ -32,11 +33,9 @@ for %%p in (x86,x64) do (
 			%ECHO% white "------------------------------------------------------------------------------\n"
 			"%~dp0.\etc\utils\win32\rand.exe" | "%~dp0.\etc\utils\win32\head.exe" -c 104857600 > "%TMP%\!TEMP_NAME!.dat"
 			if not "%ERRORLEVEL%"=="0" goto:BuildFailed
-			"%~dp0.\bin\%%p\%%c\slunkcrypt.exe" --self-test
+			"%~dp0.\bin\%%c\slunkcrypt-cli-%%p!SUFFIX!.exe" --encrypt pass:"KVeW9;z4$#]d9~}z>(WC?v&f" "%TMP%\!TEMP_NAME!.dat" "%TMP%\!TEMP_NAME!.enc"
 			if not "!ERRORLEVEL!"=="0" goto:BuildFailed
-			"%~dp0.\bin\%%p\%%c\slunkcrypt.exe" --encrypt pass:"KVeW9;z4$#]d9~}z>(WC?v&f" "%TMP%\!TEMP_NAME!.dat" "%TMP%\!TEMP_NAME!.enc"
-			if not "!ERRORLEVEL!"=="0" goto:BuildFailed
-			"%~dp0.\bin\%%p\%%c\slunkcrypt.exe" --decrypt pass:"KVeW9;z4$#]d9~}z>(WC?v&f" "%TMP%\!TEMP_NAME!.enc" "%TMP%\!TEMP_NAME!.out"
+			"%~dp0.\bin\%%c\slunkcrypt-cli-%%p!SUFFIX!.exe" --decrypt pass:"KVeW9;z4$#]d9~}z>(WC?v&f" "%TMP%\!TEMP_NAME!.enc" "%TMP%\!TEMP_NAME!.out"
 			if not "!ERRORLEVEL!"=="0" goto:BuildFailed
 			del /F "%TMP%\!TEMP_NAME!.dat" "%TMP%\!TEMP_NAME!.enc" "%TMP%\!TEMP_NAME!.out"
 			%ECHO% white "\n------------------------------------------------------------------------------"
diff --git a/mk-profiled.sh b/mk-profiled.sh
index e667671..90dda30 100755
--- a/mk-profiled.sh
+++ b/mk-profiled.sh
@@ -36,7 +36,6 @@ dd bs=1024 count=102400 < ${RANDOM_SOURCE} > /tmp/${TMP_NAME}.dat
 printf "\n"
 PASSWRD="$(./frontend/bin/slunkcrypt${SUFFIX} --make-pw)"
 
-./frontend/bin/slunkcrypt${SUFFIX} --self-test
 ./frontend/bin/slunkcrypt${SUFFIX} --encrypt pass:"${PASSWRD}" /tmp/${TMP_NAME}.dat /tmp/${TMP_NAME}.enc
 ./frontend/bin/slunkcrypt${SUFFIX} --decrypt pass:"${PASSWRD}" /tmp/${TMP_NAME}.enc /tmp/${TMP_NAME}.out