fix: 修复符号混淆规则文件中modifier条件对property和event没有生效的bug。由于property和event本身并不存在Access Attributes，实际上是由它们所包含的method的Access属性`或`计算而来。

refactor: 将 ReflectionCompatibilityDetector移到独立的ReflectionCompatibilityDetectionPass

.gitignore

@@ -1,22 +0,0 @@
-## Ignore Visual Studio temporary files, build results, and
-## files generated by popular Visual Studio add-ons.
-##
-## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
-
-**/Library/
-**/Logs/
-**/Temp/
-**/Build-*/
-**/Release-*/
-**/Debug-*/
-
-**/.vs/
-**/bin/
-**/obj/
-
-
-.vsconfig
-**/UserSettings/
-*.csproj
-*.sln
-packages-lock.json

DeobfuscateStackTrace/DeobfuscateStackTrace.csproj

@@ -1,15 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>disable</Nullable>
-     <Version>1.0.0</Version>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="CommandLineParser" Version="2.9.1" />
-  </ItemGroup>
-
-</Project>

DeobfuscateStackTrace/DeobfuscateStackTrace.sln

@@ -1,24 +0,0 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.13.35931.197
-MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DeobfuscateStackTrace", "DeobfuscateStackTrace.csproj", "{B7192F39-1EEA-4F31-885B-B606D700FC79}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Any CPU = Debug|Any CPU
-		Release|Any CPU = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{B7192F39-1EEA-4F31-885B-B606D700FC79}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{B7192F39-1EEA-4F31-885B-B606D700FC79}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{B7192F39-1EEA-4F31-885B-B606D700FC79}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{B7192F39-1EEA-4F31-885B-B606D700FC79}.Release|Any CPU.Build.0 = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {9F39E3ED-EF31-43DE-B085-0F7BF60844E8}
-	EndGlobalSection
-EndGlobal

DeobfuscateStackTrace/Program.cs

@@ -1,57 +0,0 @@
-using CommandLine;
-
-namespace DeobfuscateStackTrace
-{
-    internal class Program
-    {
-        private class CommandOptions
-        {
-
-            [Option('m', "mappingFile", Required = true, HelpText = "mapping xml file")]
-            public string MappingFile { get; set; }
-
-            [Option('i', "input", Required = true, HelpText = "input obfuscated log file")]
-            public string InputFile { get; set; }
-
-            [Option('o', "output", Required = true, HelpText = "output deobfuscated log file")]
-            public string OutputFile { get; set; }
-
-        }
-
-        static void Main(string[] args)
-        {
-            CommandOptions opt = ParseArgs(args);
-
-            if (!File.Exists(opt.MappingFile))
-            {
-                Console.Error.WriteLine($"Mapping file {opt.MappingFile} not found");
-                Environment.Exit(1);
-            }
-            if (!File.Exists(opt.InputFile))
-            {
-                Console.Error.WriteLine($"Input file {opt.InputFile} not found");
-                Environment.Exit(1);
-            }
-            var reader = new SymbolMappingReader(opt.MappingFile);
-            StackTraceDeObfuscator.Convert(reader, opt.InputFile, opt.OutputFile);
-        }
-
-        private static CommandOptions ParseArgs(string[] args)
-        {
-            var helpWriter = new StringWriter();
-            var parser = new Parser(settings =>
-            {
-                settings.AllowMultiInstance = true;
-                settings.HelpWriter = helpWriter;
-            });
-
-            var result = parser.ParseArguments<CommandOptions>(args);
-            if (result.Tag == ParserResultType.NotParsed)
-            {
-                Console.Error.WriteLine(helpWriter.ToString());
-                Environment.Exit(1);
-            }
-            return ((Parsed<CommandOptions>)result).Value;
-        }
-    }
-}

DeobfuscateStackTrace/Properties/launchSettings.json

@@ -1,8 +0,0 @@
-{
-  "profiles": {
-    "DeobfuscateStackTrace": {
-      "commandName": "Project",
-      "commandLineArgs": "-m ../../../mapping.xml -i ../../../obfuscated.log -o ../../../deobfuscated.log"
-    }
-  }
-}

DeobfuscateStackTrace/StackTraceDeObfuscator.cs

@@ -1,49 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace DeobfuscateStackTrace
-{
-    public class StackTraceDeObfuscator
-    {
-        public static void Convert(SymbolMappingReader reader, string oldLogFile, string newLogFile)
-        {
-            var obfuscatedLines = File.ReadAllLines(oldLogFile, Encoding.UTF8);
-            var deObfuscatedLines = new List<string>();
-
-            bool logLineFound = false;
-            foreach (string line in obfuscatedLines)
-            {
-                if (TryConvertLine(line, reader, ref logLineFound, out var newLine))
-                {
-                    deObfuscatedLines.Add(newLine);
-                }
-                else
-                {
-                    deObfuscatedLines.Add(line);
-                }
-            }
-            File.WriteAllLines(newLogFile, deObfuscatedLines, Encoding.UTF8);
-        }
-
-        private static bool TryConvertLine(string line, SymbolMappingReader reader, ref bool logLineFound, out string deObfuscatedStackTrace)
-        {
-            deObfuscatedStackTrace = line;
-            if (string.IsNullOrEmpty(line))
-            {
-                logLineFound = false;
-                return false;
-            }
-            if (!logLineFound)
-            {
-                logLineFound = line.StartsWith("UnityEngine.DebugLogHandler:Internal_Log")
-                    || line.StartsWith("UnityEngine.DebugLogHandler:LogFormat")
-                    || line.StartsWith("UnityEngine.Logger:Log");
-                return false;
-            }
-            return reader.TryDeObfuscateStackTrace(line, out deObfuscatedStackTrace);
-        }
-    }
-}

DeobfuscateStackTrace/SymbolMappingReader.cs

@@ -1,128 +0,0 @@
-
-using System.Xml;
-
-namespace DeobfuscateStackTrace
-{
-
-    public class SymbolMappingReader
-    {
-
-        private readonly Dictionary<string, List<string>> _fullSignatureMapper = new Dictionary<string, List<string>>();
-        private readonly Dictionary<string, List<string>> _signatureWithParamsMapper = new Dictionary<string, List<string>>();
-
-        public SymbolMappingReader(string mappingFile)
-        {
-            LoadXmlMappingFile(mappingFile);
-        }
-
-        private void LoadXmlMappingFile(string mappingFile)
-        {
-            var doc = new XmlDocument();
-            doc.Load(mappingFile);
-            var root = doc.DocumentElement;
-            foreach (XmlNode node in root.ChildNodes)
-            {
-                if (!(node is XmlElement element))
-                {
-                    continue;
-                }
-                LoadAssemblyMapping(element);
-            }
-        }
-
-        private void LoadAssemblyMapping(XmlElement ele)
-        {
-            if (ele.Name != "assembly")
-            {
-                throw new System.Exception($"Invalid node name: {ele.Name}. Expected 'assembly'.");
-            }
-            foreach (XmlNode node in ele.ChildNodes)
-            {
-                if (!(node is XmlElement element))
-                {
-                    continue;
-                }
-                if (element.Name == "type")
-                {
-                    LoadTypeMapping(element);
-                }
-            }
-        }
-
-        private void LoadTypeMapping(XmlElement ele)
-        {
-            foreach (XmlNode node in ele.ChildNodes)
-            {
-                if (!(node is XmlElement c))
-                {
-                    continue;
-                }
-                if (node.Name == "method")
-                {
-                    LoadMethodMapping(c);
-                }
-            }
-        }
-
-
-        private string GetMethodSignatureWithoutParams(string signature)
-        {
-            int index = signature.IndexOf('(');
-            if (index < 0)
-            {
-                return signature;
-            }
-            return signature.Substring(0, index);
-        }
-
-        private void LoadMethodMapping(XmlElement ele)
-        {
-            if (!ele.HasAttribute("oldStackTraceSignature"))
-            {
-                throw new System.Exception($"Invalid node name: {ele.Name}. attribute 'oldStackTraceSignature' missing.");
-            }
-            if (!ele.HasAttribute("newStackTraceSignature"))
-            {
-                throw new System.Exception($"Invalid node name: {ele.Name}. attribute 'newStackTraceSignature' missing.");
-            }
-            string oldStackTraceSignature = ele.Attributes["oldStackTraceSignature"].Value;
-            string newStackTraceSignature = ele.Attributes["newStackTraceSignature"].Value;
-
-            if (!_fullSignatureMapper.TryGetValue(newStackTraceSignature, out var oldFullSignatures))
-            {
-                oldFullSignatures = new List<string>();
-                _fullSignatureMapper[newStackTraceSignature] = oldFullSignatures;
-            }
-            oldFullSignatures.Add(oldStackTraceSignature);
-
-            string oldStackTraceSignatureWithoutParams = GetMethodSignatureWithoutParams(oldStackTraceSignature);
-            string newStackTraceSignatureWithoutParams = GetMethodSignatureWithoutParams(newStackTraceSignature);
-            if (!_signatureWithParamsMapper.TryGetValue(newStackTraceSignatureWithoutParams, out var oldSignaturesWithoutParams))
-            {
-                oldSignaturesWithoutParams = new List<string>();
-                _signatureWithParamsMapper[newStackTraceSignatureWithoutParams] = oldSignaturesWithoutParams;
-            }
-            oldSignaturesWithoutParams.Add(oldStackTraceSignatureWithoutParams);
-        }
-
-
-        public bool TryDeObfuscateStackTrace(string obfuscatedStackTraceLog, out string deObfuscatedStackTrace)
-        {
-            obfuscatedStackTraceLog = obfuscatedStackTraceLog.Trim();
-            if (_fullSignatureMapper.TryGetValue(obfuscatedStackTraceLog, out var oldFullSignatures))
-            {
-                deObfuscatedStackTrace = string.Join("|", oldFullSignatures);
-                return true;
-            }
-            
-            string obfuscatedStackTraceSignatureWithoutParams = GetMethodSignatureWithoutParams(obfuscatedStackTraceLog);
-            if (_signatureWithParamsMapper.TryGetValue(obfuscatedStackTraceSignatureWithoutParams, out var oldSignaturesWithoutParams))
-            {
-                deObfuscatedStackTrace = obfuscatedStackTraceLog.Replace(obfuscatedStackTraceSignatureWithoutParams, string.Join("|", oldSignaturesWithoutParams));
-                return true;
-            }
-            deObfuscatedStackTrace = null;
-            return false;
-        }
-    }
-}

DeobfuscateStackTrace/deobfuscated.log

@@ -1,17 +0,0 @@
-test stack trace
-UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
-UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
-UnityEngine.Logger:Log(LogType, Object)
-UnityEngine.Debug:Log(Object)
-Obfus2.TestStackTrace:Stack3()
-Obfus2.NestedClass`1:Stack2(TestStackTrace, Int32[], List`1, Banana)
-Obfus2.TestStackTrace:Stack1(Int64, UInt64, Single, Double, String, Object)
-Obfus2.TestStackTrace:Stack0(Byte, SByte, Int16, UInt16, Int32, UInt32)
-Tests.TC_StackTrace:PrintStackTrace()
-System.Reflection.RuntimeMethodInfo:InternalInvoke(Object, Object[], Exception&)
-System.Reflection.RuntimeMethodInfo:Invoke(Object, BindingFlags, Binder, Object[], CultureInfo)
-System.Reflection.MethodBase:Invoke(Object, Object[])
-SharpUnit.TestCase:Run(TestResult)
-SharpUnit.TestSuite:Run(TestResult)
-TestRunner:Run()
-Bootstrap:Start()

DeobfuscateStackTrace/obfuscated.log

@@ -1,17 +0,0 @@
-test stack trace
-UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
-UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
-UnityEngine.Logger:Log(LogType, Object)
-UnityEngine.Debug:Log(Object)
-F.g:A()
-F.G:a(g, Int32[], List`1, Banana)
-F.g:a(Int64, UInt64, Single, Double, String, Object)
-F.g:b(Byte, SByte, Int16, UInt16, Int32, UInt32)
-Tests.TC_StackTrace:PrintStackTrace()
-System.Reflection.RuntimeMethodInfo:InternalInvoke(Object, Object[], Exception&)
-System.Reflection.RuntimeMethodInfo:Invoke(Object, BindingFlags, Binder, Object[], CultureInfo)
-System.Reflection.MethodBase:Invoke(Object, Object[])
-SharpUnit.TestCase:Run(TestResult)
-SharpUnit.TestSuite:Run(TestResult)
-TestRunner:Run()
-Bootstrap:Start()

Editor/Conf/XmlAssemblyTypeMethodRuleParser.cs

@@ -2,11 +2,7 @@
 using Obfuz.Utils;
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using System.Xml;
-using UnityEditor.VersionControl;
 using UnityEngine;
 
 namespace Obfuz.Conf
@@ -17,7 +13,7 @@ namespace Obfuz.Conf
     }
 
 
-    public interface IMethodRule<R> where R: IRule<R>
+    public interface IMethodRule<R> where R : IRule<R>
     {
         string Name { get; set; }
         NameMatcher NameMatcher { get; set; }
@@ -33,7 +29,7 @@ namespace Obfuz.Conf
         public R Rule { get; set; }
     }
 
-    public interface ITypeRule<T, R> where T: IMethodRule<R> where R : IRule<R>
+    public interface ITypeRule<T, R> where T : IMethodRule<R> where R : IRule<R>
     {
         string Name { get; set; }
 

Editor/Conf/XmlFieldRuleParser.cs

@@ -2,12 +2,7 @@
 using Obfuz.Utils;
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using System.Xml;
-using UnityEditor.VersionControl;
-using UnityEngine;
 
 namespace Obfuz.Conf
 {

Editor/ConfigurablePassPolicy.cs

@@ -3,9 +3,6 @@ using Obfuz.ObfusPasses;
 using Obfuz.Utils;
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using System.Xml;
 using UnityEngine;
 
@@ -189,7 +186,7 @@ namespace Obfuz
             ObfuscationPassType passType = ObfuscationPassType.None;
             foreach (var passName in obfuscationPassTypesStr.Split('|'))
             {
-                if (Enum.TryParse< ObfuscationPassType>(passName, out var pass))
+                if (Enum.TryParse<ObfuscationPassType>(passName, out var pass))
                 {
                     passType |= pass;
                 }
@@ -389,7 +386,7 @@ namespace Obfuz
                 {
                     if (ass.nameMatcher.IsMatch(assName))
                     {
-                        result = (ass, _defaultPassRule);
+                        result = (ass, ass.rule);
                         break;
                     }
                 }

Editor/ConstValues.cs

@@ -0,0 +1,32 @@
+namespace Obfuz.Editor
+{
+    public static class ConstValues
+    {
+        public const string ObfuzInternalSymbolNamePrefix = "$Obfuz$";
+
+        public const string ObfuzRuntimeAssemblyName = "Obfuz.Runtime";
+
+        public const string ObfuzIgnoreAttributeFullName = "Obfuz.ObfuzIgnoreAttribute";
+
+        public const string ObfuzScopeFullName = "Obfuz.ObfuzScope";
+
+        public const string EncryptFieldAttributeFullName = "Obfuz.EncryptFieldAttribute";
+        public const string GeneratedEncryptionVirtualMachineFullName = "Obfuz.EncryptionVM.GeneratedEncryptionVirtualMachine";
+
+        public const string EmbeddedAttributeFullName = "Microsoft.CodeAnalysis.EmbeddedAttribute";
+
+        public const string MonoPInvokeCallbackAttributeName = "MonoPInvokeCallbackAttribute";
+
+        public const string ZluaLuaInvokeAttributeFullName = "Zlua.LuaInvokeAttribute";
+        public const string ZluaLuaCallbackAttributeFullName = "Zlua.LuaCallbackAttribute";
+        public const string ZluaLuaMarshalAsAttributeFullName = "Zlua.LuaMarshalAsAttribute";
+
+        public const string BurstCompileFullName = "Unity.Burst.BurstCompileAttribute";
+        public const string DOTSCompilerGeneratedAttributeFullName = "Unity.Jobs.DOTSCompilerGeneratedAttribute";
+
+        public const string RuntimeInitializedOnLoadMethodAttributeFullName = "UnityEngine.RuntimeInitializeOnLoadMethodAttribute";
+        public const string BlackboardEnumAttributeFullName = "Unity.Behavior.BlackboardEnumAttribute";
+
+        public const string CompilerGeneratedAttributeFullName = "System.Runtime.CompilerServices.CompilerGeneratedAttribute";
+    }
+}

Editor/Data/ConstFieldAllocator.cs

@@ -6,22 +6,12 @@ using Obfuz.Utils;
 using System;
 using System.Collections;
 using System.Collections.Generic;
-using System.Linq;
-using System.Net.NetworkInformation;
-using System.Text;
-using System.Threading.Tasks;
-using UnityEngine;
 using UnityEngine.Assertions;
 
 namespace Obfuz.Data
 {
-    public class ModuleConstFieldAllocator : IGroupByModuleEntity
+    public class ConstFieldAllocator : GroupByModuleEntityBase
     {
-        private ModuleDef _module;
-        private readonly EncryptionScopeProvider _encryptionScopeProvider;
-        private readonly RvaDataAllocator _rvaDataAllocator;
-        private readonly GroupByModuleEntityManager _moduleEntityManager;
-        private EncryptionScopeInfo _encryptionScope;
         private RandomCreator _randomCreator;
         private IEncryptor _encryptor;
 
@@ -62,19 +52,14 @@ namespace Obfuz.Data
         private bool _done;
 
 
-        public ModuleConstFieldAllocator(EncryptionScopeProvider encryptionScopeProvider, RvaDataAllocator rvaDataAllocator, GroupByModuleEntityManager moduleEntityManager)
+        public ConstFieldAllocator()
         {
-            _encryptionScopeProvider = encryptionScopeProvider;
-            _rvaDataAllocator = rvaDataAllocator;
-            _moduleEntityManager = moduleEntityManager;
         }
 
-        public void Init(ModuleDef mod)
+        public override void Init()
         {
-            _module = mod;
+            _randomCreator = EncryptionScope.localRandomCreator;
-            _encryptionScope = _encryptionScopeProvider.GetScope(mod);
+            _encryptor = EncryptionScope.encryptor;
-            _randomCreator = _encryptionScope.localRandomCreator;
-            _encryptor = _encryptionScope.encryptor;
         }
 
         const int maxFieldCount = 1000;
@@ -82,34 +67,37 @@ namespace Obfuz.Data
 
         private TypeSig GetTypeSigOfValue(object value)
         {
+            ModuleDef mod = Module;
             if (value is int)
-                return _module.CorLibTypes.Int32;
+                return mod.CorLibTypes.Int32;
             if (value is long)
-                return _module.CorLibTypes.Int64;
+                return mod.CorLibTypes.Int64;
             if (value is float)
-                return _module.CorLibTypes.Single;
+                return mod.CorLibTypes.Single;
             if (value is double)
-                return _module.CorLibTypes.Double;
+                return mod.CorLibTypes.Double;
             if (value is string)
-                return _module.CorLibTypes.String;
+                return mod.CorLibTypes.String;
             if (value is byte[])
-                return new SZArraySig(_module.CorLibTypes.Byte);
+                return new SZArraySig(mod.CorLibTypes.Byte);
             throw new NotSupportedException($"Unsupported type: {value.GetType()}");
         }
 
         private ConstFieldInfo CreateConstFieldInfo(object value)
         {
+            ModuleDef mod = Module;
             if (_holderTypeDef == null || _holderTypeDef.Fields.Count >= maxFieldCount)
             {
-                _module.EnableTypeDefFindCache = false;
+                using (var scope = new DisableTypeDefFindCacheScope(mod))
-                ITypeDefOrRef objectTypeRef = _module.Import(typeof(object));
+                {
+                    ITypeDefOrRef objectTypeRef = mod.Import(typeof(object));
                     _holderTypeDef = new TypeDefUser($"{ConstValues.ObfuzInternalSymbolNamePrefix}ConstFieldHolder${_holderTypeDefs.Count}", objectTypeRef);
-                _module.Types.Add(_holderTypeDef);
+                    mod.Types.Add(_holderTypeDef);
                     _holderTypeDefs.Add(_holderTypeDef);
-                _module.EnableTypeDefFindCache = true;
+                }
             }
 
-            var field = new FieldDefUser($"{ConstValues.ObfuzInternalSymbolNamePrefix}RVA_Value{_holderTypeDef.Fields.Count}", new FieldSig(GetTypeSigOfValue(value)), FieldAttributes.Static | FieldAttributes.Public | FieldAttributes.InitOnly);
+            var field = new FieldDefUser($"{ConstValues.ObfuzInternalSymbolNamePrefix}RVA_Value{_holderTypeDef.Fields.Count}", new FieldSig(GetTypeSigOfValue(value)), FieldAttributes.Static | FieldAttributes.Public);
             field.DeclaringType = _holderTypeDef;
             return new ConstFieldInfo
             {
@@ -163,41 +151,35 @@ namespace Obfuz.Data
             return AllocateAny(value);
         }
 
-        private DefaultMetadataImporter GetModuleMetadataImporter()
-        {
-            return _moduleEntityManager.GetDefaultModuleMetadataImporter(_module, _encryptionScopeProvider);
-        }
 
         private void CreateCCtorOfRvaTypeDef(TypeDef type)
         {
+            ModuleDef mod = Module;
             var cctor = new MethodDefUser(".cctor",
-                MethodSig.CreateStatic(_module.CorLibTypes.Void),
+                MethodSig.CreateStatic(mod.CorLibTypes.Void),
                 MethodImplAttributes.IL | MethodImplAttributes.Managed,
                 MethodAttributes.Static | MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName | MethodAttributes.Private);
             cctor.DeclaringType = type;
-            //_rvaTypeDef.Methods.Add(cctor);
             var body = new CilBody();
             cctor.Body = body;
             var ins = body.Instructions;
 
-            //IMethod method = _module.Import(typeof(System.Runtime.CompilerServices.RuntimeHelpers).GetMethod("InitializeArray", new[] { typeof(Array), typeof(RuntimeFieldHandle) }));
-            //Assert.IsNotNull(method);
 
-
+            DefaultMetadataImporter importer = this.GetDefaultModuleMetadataImporter();
-            DefaultMetadataImporter importer = GetModuleMetadataImporter();
+            RvaDataAllocator rvaDataAllocator = GetEntity<RvaDataAllocator>();
             // TODO. obfuscate init codes
             foreach (var field in type.Fields)
             {
                 ConstFieldInfo constInfo = _field2Fields[field];
                 IRandom localRandom = _randomCreator(HashUtil.ComputePrimitiveOrStringOrBytesHashCode(constInfo.value));
-                int ops = EncryptionUtil.GenerateEncryptionOpCodes(localRandom, _encryptor, 4);
+                int ops = EncryptionUtil.GenerateEncryptionOpCodes(localRandom, _encryptor, EncryptionScopeInfo.MaxEncryptionLevel, false);
                 int salt = localRandom.NextInt();
                 switch (constInfo.value)
                 {
                     case int i:
                     {
                         int encryptedValue = _encryptor.Encrypt(i, ops, salt);
-                        RvaData rvaData = _rvaDataAllocator.Allocate(_module, encryptedValue);
+                        RvaData rvaData = rvaDataAllocator.Allocate(encryptedValue);
                         ins.Add(Instruction.Create(OpCodes.Ldsfld, rvaData.field));
                         ins.Add(Instruction.CreateLdcI4(rvaData.offset));
                         ins.Add(Instruction.CreateLdcI4(ops));
@@ -208,7 +190,7 @@ namespace Obfuz.Data
                     case long l:
                     {
                         long encryptedValue = _encryptor.Encrypt(l, ops, salt);
-                        RvaData rvaData = _rvaDataAllocator.Allocate(_module, encryptedValue);
+                        RvaData rvaData = rvaDataAllocator.Allocate(encryptedValue);
                         ins.Add(Instruction.Create(OpCodes.Ldsfld, rvaData.field));
                         ins.Add(Instruction.CreateLdcI4(rvaData.offset));
                         ins.Add(Instruction.CreateLdcI4(ops));
@@ -219,7 +201,7 @@ namespace Obfuz.Data
                     case float f:
                     {
                         float encryptedValue = _encryptor.Encrypt(f, ops, salt);
-                        RvaData rvaData = _rvaDataAllocator.Allocate(_module, encryptedValue);
+                        RvaData rvaData = rvaDataAllocator.Allocate(encryptedValue);
                         ins.Add(Instruction.Create(OpCodes.Ldsfld, rvaData.field));
                         ins.Add(Instruction.CreateLdcI4(rvaData.offset));
                         ins.Add(Instruction.CreateLdcI4(ops));
@@ -230,7 +212,7 @@ namespace Obfuz.Data
                     case double d:
                     {
                         double encryptedValue = _encryptor.Encrypt(d, ops, salt);
-                        RvaData rvaData = _rvaDataAllocator.Allocate(_module, encryptedValue);
+                        RvaData rvaData = rvaDataAllocator.Allocate(encryptedValue);
                         ins.Add(Instruction.Create(OpCodes.Ldsfld, rvaData.field));
                         ins.Add(Instruction.CreateLdcI4(rvaData.offset));
                         ins.Add(Instruction.CreateLdcI4(ops));
@@ -241,7 +223,7 @@ namespace Obfuz.Data
                     case string s:
                     {
                         byte[] encryptedValue = _encryptor.Encrypt(s, ops, salt);
-                        RvaData rvaData = _rvaDataAllocator.Allocate(_module, encryptedValue);
+                        RvaData rvaData = rvaDataAllocator.Allocate(encryptedValue);
                         ins.Add(Instruction.Create(OpCodes.Ldsfld, rvaData.field));
                         ins.Add(Instruction.CreateLdcI4(rvaData.offset));
                         Assert.AreEqual(encryptedValue.Length, rvaData.size);
@@ -255,7 +237,7 @@ namespace Obfuz.Data
                     {
                         byte[] encryptedValue = _encryptor.Encrypt(bs, 0, bs.Length, ops, salt);
                         Assert.AreEqual(encryptedValue.Length, bs.Length);
-                        RvaData rvaData = _rvaDataAllocator.Allocate(_module, encryptedValue);
+                        RvaData rvaData = rvaDataAllocator.Allocate(encryptedValue);
                         ins.Add(Instruction.Create(OpCodes.Ldsfld, rvaData.field));
                         ins.Add(Instruction.CreateLdcI4(rvaData.offset));
                         ins.Add(Instruction.CreateLdcI4(bs.Length));
@@ -271,7 +253,7 @@ namespace Obfuz.Data
             ins.Add(Instruction.Create(OpCodes.Ret));
         }
 
-        public void Done()
+        public override void Done()
         {
             if (_done)
             {
@@ -284,61 +266,4 @@ namespace Obfuz.Data
             }
         }
     }
-
-    public class ConstFieldAllocator
-    {
-        private readonly EncryptionScopeProvider _encryptionScopeProvider;
-        private readonly RvaDataAllocator _rvaDataAllocator;
-        private readonly GroupByModuleEntityManager _moduleEntityManager;
-
-        public ConstFieldAllocator(EncryptionScopeProvider encryptionScopeProvider, RvaDataAllocator rvaDataAllocator, GroupByModuleEntityManager moduleEntityManager)
-        {
-            _encryptionScopeProvider = encryptionScopeProvider;
-            _rvaDataAllocator = rvaDataAllocator;
-            _moduleEntityManager = moduleEntityManager;
-        }
-
-        private ModuleConstFieldAllocator GetModuleAllocator(ModuleDef mod)
-        {
-            return _moduleEntityManager.GetEntity<ModuleConstFieldAllocator>(mod, () => new ModuleConstFieldAllocator(_encryptionScopeProvider, _rvaDataAllocator, _moduleEntityManager));
-        }
-
-        public FieldDef Allocate(ModuleDef mod, int value)
-        {
-            return GetModuleAllocator(mod).Allocate(value);
-        }
-
-        public FieldDef Allocate(ModuleDef mod, long value)
-        {
-            return GetModuleAllocator(mod).Allocate(value);
-        }
-
-        public FieldDef Allocate(ModuleDef mod, float value)
-        {
-            return GetModuleAllocator(mod).Allocate(value);
-        }
-
-        public FieldDef Allocate(ModuleDef mod, double value)
-        {
-            return GetModuleAllocator(mod).Allocate(value);
-        }
-
-        public FieldDef Allocate(ModuleDef mod, byte[] value)
-        {
-            return GetModuleAllocator(mod).Allocate(value);
-        }
-
-        public FieldDef Allocate(ModuleDef mod, string value)
-        {
-            return GetModuleAllocator(mod).Allocate(value);
-        }
-
-        public void Done()
-        {
-            foreach (var moduleAllocator in _moduleEntityManager.GetEntities<ModuleConstFieldAllocator>())
-            {
-                moduleAllocator.Done();
-            }
-        }
-    }
 }

Editor/Data/RvaDataAllocator.cs

@@ -0,0 +1,323 @@
+using dnlib.DotNet;
+using dnlib.DotNet.Emit;
+using Obfuz.Emit;
+using Obfuz.Utils;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using UnityEngine.Assertions;
+
+namespace Obfuz.Data
+{
+    public struct RvaData
+    {
+        public readonly FieldDef field;
+        public readonly int offset;
+        public readonly int size;
+
+        public RvaData(FieldDef field, int offset, int size)
+        {
+            this.field = field;
+            this.offset = offset;
+            this.size = size;
+        }
+    }
+
+    public class RvaDataAllocator : GroupByModuleEntityBase
+    {
+        const int maxRvaDataSize = 2 * 1024;
+
+        // in HybridCLR version below 8.3.0, the max total static field size of a type is 16KB, so we limit the total size of RVA data to 16KB
+        const int maxTotalRvaDataFieldSizeInHybridCLR = 16 * 1024;
+
+        private IRandom _random;
+
+        class RvaField
+        {
+            public FieldDef holderDataField;
+            public FieldDef runtimeValueField;
+            public int encryptionOps;
+            public uint size;
+            public List<byte> bytes;
+            public int salt;
+
+            public void FillPaddingToSize(int newSize)
+            {
+                for (int i = bytes.Count; i < newSize; i++)
+                {
+                    bytes.Add(0xAB);
+                }
+            }
+
+            public void FillPaddingToEnd()
+            {
+                // fill with random value
+                for (int i = bytes.Count; i < size; i++)
+                {
+                    bytes.Add(0xAB);
+                }
+            }
+        }
+
+        private class RvaTypeDefInfo
+        {
+            public readonly TypeDef typeDef;
+            public readonly int index;
+            public readonly List<RvaField> rvaFields = new List<RvaField>();
+
+            public RvaTypeDefInfo(TypeDef typeDef, int index)
+            {
+                this.typeDef = typeDef;
+                this.index = index;
+            }
+        }
+
+        private RvaField _currentField;
+
+        private RvaTypeDefInfo _currentRvaType;
+        private readonly List<RvaTypeDefInfo> _rvaTypeDefs = new List<RvaTypeDefInfo>();
+
+        private readonly Dictionary<int, TypeDef> _dataHolderTypeBySizes = new Dictionary<int, TypeDef>();
+        private bool _done;
+
+        public RvaDataAllocator()
+        {
+        }
+
+        public override void Init()
+        {
+            _random = EncryptionScope.localRandomCreator(HashUtil.ComputeHash(Module.Name));
+        }
+
+        private (FieldDef, FieldDef) CreateDataHolderRvaField(TypeDef dataHolderType)
+        {
+            if (_currentRvaType == null || _currentRvaType.rvaFields.Count >= maxTotalRvaDataFieldSizeInHybridCLR / maxRvaDataSize - 1)
+            {
+                using (var scope = new DisableTypeDefFindCacheScope(Module))
+                {
+                    var rvaTypeDef = new TypeDefUser($"$Obfuz$RVA${_rvaTypeDefs.Count}", Module.CorLibTypes.Object.ToTypeDefOrRef());
+                    Module.Types.Add(rvaTypeDef);
+                    _currentRvaType = new RvaTypeDefInfo(rvaTypeDef, _rvaTypeDefs.Count);
+                    _rvaTypeDefs.Add(_currentRvaType);
+                }
+            }
+
+            var holderField = new FieldDefUser($"$RVA_Data{_currentRvaType.rvaFields.Count}", new FieldSig(dataHolderType.ToTypeSig()), FieldAttributes.InitOnly | FieldAttributes.Static | FieldAttributes.HasFieldRVA);
+            holderField.DeclaringType = _currentRvaType.typeDef;
+
+            var runtimeValueField = new FieldDefUser($"$RVA_Value{_currentRvaType.rvaFields.Count}", new FieldSig(new SZArraySig(Module.CorLibTypes.Byte)), FieldAttributes.Static | FieldAttributes.Public);
+            runtimeValueField.DeclaringType = _currentRvaType.typeDef;
+            return (holderField, runtimeValueField);
+        }
+
+        private TypeDef GetDataHolderType(int size)
+        {
+            size = (size + 15) & ~15; // align to 16 bytes
+            if (_dataHolderTypeBySizes.TryGetValue(size, out var type))
+                return type;
+
+            using (var scope = new DisableTypeDefFindCacheScope(Module))
+            {
+                var dataHolderType = new TypeDefUser($"$ObfuzRVA$DataHolder{size}", Module.Import(typeof(ValueType)));
+                dataHolderType.Attributes = TypeAttributes.Public | TypeAttributes.Sealed;
+                dataHolderType.Layout = TypeAttributes.ExplicitLayout;
+                dataHolderType.PackingSize = 1;
+                dataHolderType.ClassSize = (uint)size;
+                _dataHolderTypeBySizes.Add(size, dataHolderType);
+                Module.Types.Add(dataHolderType);
+                return dataHolderType;
+            }
+        }
+
+        private static int AlignTo(int size, int alignment)
+        {
+            return (size + alignment - 1) & ~(alignment - 1);
+        }
+
+        private RvaField CreateRvaField(int size)
+        {
+            TypeDef dataHolderType = GetDataHolderType(size);
+            var (holderDataField, runtimeValueField) = CreateDataHolderRvaField(dataHolderType);
+            var newRvaField = new RvaField
+            {
+                holderDataField = holderDataField,
+                runtimeValueField = runtimeValueField,
+                size = dataHolderType.ClassSize,
+                bytes = new List<byte>((int)dataHolderType.ClassSize),
+                encryptionOps = _random.NextInt(),
+                salt = _random.NextInt(),
+            };
+            _currentRvaType.rvaFields.Add(newRvaField);
+            return newRvaField;
+        }
+
+        private RvaField GetRvaField(int preservedSize, int alignment)
+        {
+            if (_done)
+            {
+                throw new Exception("can't GetRvaField after done");
+            }
+            Assert.IsTrue(preservedSize % alignment == 0);
+            // for big size, create a new field
+            if (preservedSize >= maxRvaDataSize)
+            {
+                return CreateRvaField(preservedSize);
+            }
+
+            if (_currentField != null)
+            {
+                int offset = AlignTo(_currentField.bytes.Count, alignment);
+
+                int expectedSize = offset + preservedSize;
+                if (expectedSize <= _currentField.size)
+                {
+                    _currentField.FillPaddingToSize(offset);
+                    return _currentField;
+                }
+
+                _currentField.FillPaddingToEnd();
+            }
+            _currentField = CreateRvaField(maxRvaDataSize);
+            return _currentField;
+        }
+
+        public RvaData Allocate(int value)
+        {
+            RvaField field = GetRvaField(4, 4);
+            int offset = field.bytes.Count;
+            Assert.IsTrue(offset % 4 == 0);
+            field.bytes.AddRange(BitConverter.GetBytes(value));
+            return new RvaData(field.runtimeValueField, offset, 4);
+        }
+
+        public RvaData Allocate(long value)
+        {
+            RvaField field = GetRvaField(8, 8);
+            int offset = field.bytes.Count;
+            Assert.IsTrue(offset % 8 == 0);
+            field.bytes.AddRange(BitConverter.GetBytes(value));
+            return new RvaData(field.runtimeValueField, offset, 8);
+        }
+
+        public RvaData Allocate(float value)
+        {
+            RvaField field = GetRvaField(4, 4);
+            int offset = field.bytes.Count;
+            Assert.IsTrue(offset % 4 == 0);
+            field.bytes.AddRange(BitConverter.GetBytes(value));
+            return new RvaData(field.runtimeValueField, offset, 4);
+        }
+
+        public RvaData Allocate(double value)
+        {
+            RvaField field = GetRvaField(8, 8);
+            int offset = field.bytes.Count;
+            Assert.IsTrue(offset % 8 == 0);
+            field.bytes.AddRange(BitConverter.GetBytes(value));
+            return new RvaData(field.runtimeValueField, offset, 8);
+        }
+
+        public RvaData Allocate(string value)
+        {
+            byte[] bytes = Encoding.UTF8.GetBytes(value);
+            return Allocate(bytes);
+        }
+
+        public RvaData Allocate(byte[] value)
+        {
+            RvaField field = GetRvaField(value.Length, 1);
+            int offset = field.bytes.Count;
+            field.bytes.AddRange(value);
+            return new RvaData(field.runtimeValueField, offset, value.Length);
+        }
+
+
+        private void AddVerifyCodes(IList<Instruction> insts, DefaultMetadataImporter importer)
+        {
+            int verifyIntValue = 0x12345678;
+            EncryptionScopeInfo encryptionScope = this.EncryptionScope;
+            IRandom verifyRandom = encryptionScope.localRandomCreator(verifyIntValue);
+            int verifyOps = EncryptionUtil.GenerateEncryptionOpCodes(verifyRandom, encryptionScope.encryptor, EncryptionScopeInfo.MaxEncryptionLevel, false);
+            int verifySalt = verifyRandom.NextInt();
+            int encryptedVerifyIntValue = encryptionScope.encryptor.Encrypt(verifyIntValue, verifyOps, verifySalt);
+
+            insts.Add(Instruction.Create(OpCodes.Ldc_I4, verifyIntValue));
+            insts.Add(Instruction.CreateLdcI4(encryptedVerifyIntValue));
+            insts.Add(Instruction.CreateLdcI4(verifyOps));
+            insts.Add(Instruction.CreateLdcI4(verifySalt));
+            insts.Add(Instruction.Create(OpCodes.Call, importer.DecryptInt));
+            insts.Add(Instruction.Create(OpCodes.Call, importer.VerifySecretKey));
+
+        }
+
+        private void CreateCCtorOfRvaTypeDef()
+        {
+            foreach (RvaTypeDefInfo rvaTypeDef in _rvaTypeDefs)
+            {
+                ModuleDef mod = rvaTypeDef.typeDef.Module;
+                var cctorMethod = new MethodDefUser(".cctor",
+                    MethodSig.CreateStatic(Module.CorLibTypes.Void),
+                    MethodImplAttributes.IL | MethodImplAttributes.Managed,
+                    MethodAttributes.Static | MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName | MethodAttributes.Private);
+                cctorMethod.DeclaringType = rvaTypeDef.typeDef;
+                //_rvaTypeDef.Methods.Add(cctor);
+                var body = new CilBody();
+                cctorMethod.Body = body;
+                var ins = body.Instructions;
+
+                DefaultMetadataImporter importer = this.GetDefaultModuleMetadataImporter();
+                AddVerifyCodes(ins, importer);
+                foreach (var field in rvaTypeDef.rvaFields)
+                {
+                    // ldc
+                    // newarr
+                    // dup
+                    // stsfld
+                    // ldtoken
+                    // RuntimeHelpers.InitializeArray(array, fieldHandle);
+                    ins.Add(Instruction.Create(OpCodes.Ldc_I4, (int)field.size));
+                    ins.Add(Instruction.Create(OpCodes.Newarr, field.runtimeValueField.FieldType.Next.ToTypeDefOrRef()));
+                    ins.Add(Instruction.Create(OpCodes.Dup));
+                    ins.Add(Instruction.Create(OpCodes.Dup));
+                    ins.Add(Instruction.Create(OpCodes.Stsfld, field.runtimeValueField));
+                    ins.Add(Instruction.Create(OpCodes.Ldtoken, field.holderDataField));
+                    ins.Add(Instruction.Create(OpCodes.Call, importer.InitializedArray));
+
+                    // EncryptionService.DecryptBlock(array, field.encryptionOps, field.salt);
+                    ins.Add(Instruction.CreateLdcI4(field.encryptionOps));
+                    ins.Add(Instruction.Create(OpCodes.Ldc_I4, field.salt));
+                    ins.Add(Instruction.Create(OpCodes.Call, importer.DecryptBlock));
+
+                }
+                ins.Add(Instruction.Create(OpCodes.Ret));
+            }
+        }
+
+        private void SetFieldsRVA()
+        {
+            foreach (var field in _rvaTypeDefs.SelectMany(t => t.rvaFields))
+            {
+                Assert.IsTrue(field.bytes.Count <= field.size);
+                if (field.bytes.Count < field.size)
+                {
+                    field.FillPaddingToEnd();
+                }
+                byte[] data = field.bytes.ToArray();
+                EncryptionScope.encryptor.EncryptBlock(data, field.encryptionOps, field.salt);
+                field.holderDataField.InitialValue = data;
+            }
+        }
+
+        public override void Done()
+        {
+            if (_done)
+            {
+                throw new Exception("can't call Done twice");
+            }
+            _done = true;
+            SetFieldsRVA();
+            CreateCCtorOfRvaTypeDef();
+        }
+    }
+}

Editor/Emit/BasicBlockCollection.cs

@@ -3,9 +3,6 @@ using dnlib.DotNet.Emit;
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Runtime.Remoting.Messaging;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Obfuz.Emit
 {
@@ -41,13 +38,20 @@ namespace Obfuz.Emit
 
         public IList<BasicBlock> Blocks => _blocks;
 
-        public BasicBlockCollection(MethodDef method)
+        public BasicBlockCollection(MethodDef method, bool computeInLoop)
         {
             _method = method;
             HashSet<Instruction> splitPoints = BuildSplitPoint(method);
             BuildBasicBlocks(method, splitPoints);
             BuildInOutGraph(method);
+            if (computeInLoop)
+            {
+                ComputeBlocksInLoop();
+            }
+        }
 
+        public void ComputeBlocksInLoop()
+        {
             var loopBlocks = FindLoopBlocks(_blocks);
             foreach (var block in loopBlocks)
             {
@@ -100,6 +104,7 @@ namespace Obfuz.Emit
                         {
                             splitPoints.Add(nextInst);
                         }
+                        splitPoints.Add((Instruction)curInst.Operand);
                         break;
                     }
                     case FlowControl.Cond_Branch:
@@ -207,11 +212,21 @@ namespace Obfuz.Emit
                         }
                         break;
                     }
+                    case FlowControl.Call:
+                    case FlowControl.Next:
+                    {
+                        if (nextBlock != null)
+                        {
+                            curBlock.AddTargetBasicBlock(nextBlock);
+                        }
+                        break;
+                    }
                     case FlowControl.Return:
                     case FlowControl.Throw:
                     {
                         break;
                     }
+                    default: throw new NotSupportedException($"Unsupported flow control: {lastInst.OpCode.FlowControl} in method {method.FullName}");
                 }
             }
         }

Editor/Emit/DefaultMetadataImporter.cs

@@ -0,0 +1,423 @@
+using dnlib.DotNet;
+using System;
+using System.Reflection;
+using UnityEngine.Assertions;
+
+namespace Obfuz.Emit
+{
+    public class EncryptionServiceMetadataImporter
+    {
+        private readonly ModuleDef _module;
+        private readonly Type _encryptionServiceType;
+
+        private IMethod _encryptBlock;
+        private IMethod _decryptBlock;
+        private IMethod _encryptInt;
+        private IMethod _decryptInt;
+        private IMethod _encryptLong;
+        private IMethod _decryptLong;
+        private IMethod _encryptFloat;
+        private IMethod _decryptFloat;
+        private IMethod _encryptDouble;
+        private IMethod _decryptDouble;
+        private IMethod _encryptString;
+        private IMethod _decryptString;
+        private IMethod _encryptBytes;
+        private IMethod _decryptBytes;
+
+        private IMethod _decryptFromRvaInt;
+        private IMethod _decryptFromRvaLong;
+        private IMethod _decryptFromRvaFloat;
+        private IMethod _decryptFromRvaDouble;
+        private IMethod _decryptFromRvaString;
+        private IMethod _decryptFromRvaBytes;
+
+        private IMethod _decryptInitializeArray;
+
+        public IMethod EncryptBlock => _encryptBlock;
+        public IMethod DecryptBlock => _decryptBlock;
+
+        public IMethod EncryptInt => _encryptInt;
+        public IMethod DecryptInt => _decryptInt;
+        public IMethod EncryptLong => _encryptLong;
+        public IMethod DecryptLong => _decryptLong;
+        public IMethod EncryptFloat => _encryptFloat;
+        public IMethod DecryptFloat => _decryptFloat;
+        public IMethod EncryptDouble => _encryptDouble;
+        public IMethod DecryptDouble => _decryptDouble;
+        public IMethod EncryptString => _encryptString;
+        public IMethod DecryptString => _decryptString;
+        public IMethod EncryptBytes => _encryptBytes;
+        public IMethod DecryptBytes => _decryptBytes;
+
+        public IMethod DecryptFromRvaInt => _decryptFromRvaInt;
+        public IMethod DecryptFromRvaLong => _decryptFromRvaLong;
+        public IMethod DecryptFromRvaFloat => _decryptFromRvaFloat;
+        public IMethod DecryptFromRvaDouble => _decryptFromRvaDouble;
+        public IMethod DecryptFromRvaBytes => _decryptFromRvaBytes;
+        public IMethod DecryptFromRvaString => _decryptFromRvaString;
+
+        public IMethod DecryptInitializeArray => _decryptInitializeArray;
+
+        public EncryptionServiceMetadataImporter(ModuleDef mod, Type encryptionServiceType)
+        {
+            _module = mod;
+            _encryptionServiceType = encryptionServiceType;
+            _encryptBlock = mod.Import(encryptionServiceType.GetMethod("EncryptBlock", new[] { typeof(byte[]), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_encryptBlock);
+            _decryptBlock = mod.Import(encryptionServiceType.GetMethod("DecryptBlock", new[] { typeof(byte[]), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptBlock);
+            _encryptInt = mod.Import(encryptionServiceType.GetMethod("Encrypt", new[] { typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_encryptInt);
+            _decryptInt = mod.Import(encryptionServiceType.GetMethod("Decrypt", new[] { typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptInt);
+            _encryptLong = mod.Import(encryptionServiceType.GetMethod("Encrypt", new[] { typeof(long), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_encryptLong);
+            _decryptLong = mod.Import(encryptionServiceType.GetMethod("Decrypt", new[] { typeof(long), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptLong);
+            _encryptFloat = mod.Import(encryptionServiceType.GetMethod("Encrypt", new[] { typeof(float), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_encryptFloat);
+            _decryptFloat = mod.Import(encryptionServiceType.GetMethod("Decrypt", new[] { typeof(float), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptFloat);
+            _encryptDouble = mod.Import(encryptionServiceType.GetMethod("Encrypt", new[] { typeof(double), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_encryptDouble);
+            _decryptDouble = mod.Import(encryptionServiceType.GetMethod("Decrypt", new[] { typeof(double), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptDouble);
+            _encryptString = mod.Import(encryptionServiceType.GetMethod("Encrypt", new[] { typeof(string), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_encryptString);
+            _decryptString = mod.Import(encryptionServiceType.GetMethod("DecryptString", new[] { typeof(byte[]), typeof(int), typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptString);
+            _encryptBytes = mod.Import(encryptionServiceType.GetMethod("Encrypt", new[] { typeof(byte[]), typeof(int), typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_encryptBytes);
+            _decryptBytes = mod.Import(encryptionServiceType.GetMethod("Decrypt", new[] { typeof(byte[]), typeof(int), typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptBytes);
+
+            _decryptFromRvaInt = mod.Import(encryptionServiceType.GetMethod("DecryptFromRvaInt", new[] { typeof(byte[]), typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptFromRvaInt);
+            _decryptFromRvaLong = mod.Import(encryptionServiceType.GetMethod("DecryptFromRvaLong", new[] { typeof(byte[]), typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptFromRvaLong);
+            _decryptFromRvaFloat = mod.Import(encryptionServiceType.GetMethod("DecryptFromRvaFloat", new[] { typeof(byte[]), typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptFromRvaFloat);
+            _decryptFromRvaDouble = mod.Import(encryptionServiceType.GetMethod("DecryptFromRvaDouble", new[] { typeof(byte[]), typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptFromRvaDouble);
+            _decryptFromRvaBytes = mod.Import(encryptionServiceType.GetMethod("DecryptFromRvaBytes", new[] { typeof(byte[]), typeof(int), typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptFromRvaBytes);
+            _decryptFromRvaString = mod.Import(encryptionServiceType.GetMethod("DecryptFromRvaString", new[] { typeof(byte[]), typeof(int), typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptFromRvaString);
+            _decryptInitializeArray = mod.Import(encryptionServiceType.GetMethod("DecryptInitializeArray", new[] { typeof(System.Array), typeof(System.RuntimeFieldHandle), typeof(int), typeof(int), typeof(int) }));
+            Assert.IsNotNull(_decryptInitializeArray);
+        }
+    }
+
+    public class DefaultMetadataImporter : GroupByModuleEntityBase
+    {
+        private EncryptionServiceMetadataImporter _defaultEncryptionServiceMetadataImporter;
+
+
+        private EncryptionServiceMetadataImporter _staticDefaultEncryptionServiceMetadataImporter;
+        private EncryptionServiceMetadataImporter _dynamicDefaultEncryptionServiceMetadataImporter;
+
+        public DefaultMetadataImporter()
+        {
+        }
+
+        public override void Init()
+        {
+            ModuleDef mod = Module;
+
+            var constUtilityType = typeof(ConstUtility);
+
+            _castIntAsFloat = mod.Import(constUtilityType.GetMethod("CastIntAsFloat"));
+            Assert.IsNotNull(_castIntAsFloat, "CastIntAsFloat not found");
+            _castLongAsDouble = mod.Import(constUtilityType.GetMethod("CastLongAsDouble"));
+            Assert.IsNotNull(_castLongAsDouble, "CastLongAsDouble not found");
+            _castFloatAsInt = mod.Import(constUtilityType.GetMethod("CastFloatAsInt"));
+            Assert.IsNotNull(_castFloatAsInt, "CastFloatAsInt not found");
+            _castDoubleAsLong = mod.Import(constUtilityType.GetMethod("CastDoubleAsLong"));
+            Assert.IsNotNull(_castDoubleAsLong, "CastDoubleAsLong not found");
+
+            _initializeArray = mod.Import(typeof(System.Runtime.CompilerServices.RuntimeHelpers).GetMethod("InitializeArray", new[] { typeof(Array), typeof(RuntimeFieldHandle) }));
+            Assert.IsNotNull(_initializeArray);
+            _verifySecretKey = mod.Import(typeof(AssertUtility).GetMethod("VerifySecretKey", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_verifySecretKey, "VerifySecretKey not found");
+
+            _obfuscationTypeMapperRegisterType = mod.Import(typeof(ObfuscationTypeMapper).GetMethod("RegisterType", BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static, null, new[] { typeof(string) }, null));
+            Assert.IsNotNull(_obfuscationTypeMapperRegisterType, "ObfuscationTypeMapper.RegisterType not found");
+
+            var exprUtilityType = typeof(ExprUtility);
+            _addInt = mod.Import(exprUtilityType.GetMethod("Add", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_addInt, "ExprUtility.Add(int, int) not found");
+            _addLong = mod.Import(exprUtilityType.GetMethod("Add", new[] { typeof(long), typeof(long) }));
+            Assert.IsNotNull(_addLong, "ExprUtility.Add(long, long) not found");
+            _addFloat = mod.Import(exprUtilityType.GetMethod("Add", new[] { typeof(float), typeof(float) }));
+            Assert.IsNotNull(_addFloat, "ExprUtility.Add(float, float) not found");
+            _addDouble = mod.Import(exprUtilityType.GetMethod("Add", new[] { typeof(double), typeof(double) }));
+            Assert.IsNotNull(_addDouble, "ExprUtility.Add(double, double) not found");
+            _addIntPtr = mod.Import(exprUtilityType.GetMethod("Add", new[] { typeof(IntPtr), typeof(IntPtr) }));
+            Assert.IsNotNull(_addIntPtr, "ExprUtility.Add(IntPtr, IntPtr) not found");
+            _addIntPtrInt = mod.Import(exprUtilityType.GetMethod("Add", new[] { typeof(IntPtr), typeof(int) }));
+            Assert.IsNotNull(_addIntPtrInt, "ExprUtility.Add(IntPtr, int) not found");
+
+            _subtractInt = mod.Import(exprUtilityType.GetMethod("Subtract", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_subtractInt, "ExprUtility.Subtract(int, int) not found");
+            _subtractLong = mod.Import(exprUtilityType.GetMethod("Subtract", new[] { typeof(long), typeof(long) }));
+            Assert.IsNotNull(_subtractLong, "ExprUtility.Subtract(long, long) not found");
+            _subtractFloat = mod.Import(exprUtilityType.GetMethod("Subtract", new[] { typeof(float), typeof(float) }));
+            Assert.IsNotNull(_subtractFloat, "ExprUtility.Subtract(float, float) not found");
+            _subtractDouble = mod.Import(exprUtilityType.GetMethod("Subtract", new[] { typeof(double), typeof(double) }));
+            Assert.IsNotNull(_subtractDouble, "ExprUtility.Subtract(double, double) not found");
+            _subtractIntPtr = mod.Import(exprUtilityType.GetMethod("Subtract", new[] { typeof(IntPtr), typeof(IntPtr) }));
+            Assert.IsNotNull(_subtractIntPtr, "ExprUtility.Subtract(IntPtr, IntPtr) not found");
+            _subtractIntPtrInt = mod.Import(exprUtilityType.GetMethod("Subtract", new[] { typeof(IntPtr), typeof(int) }));
+            Assert.IsNotNull(_subtractIntPtrInt, "ExprUtility.Subtract(IntPtr, int) not found");
+
+            _multiplyInt = mod.Import(exprUtilityType.GetMethod("Multiply", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_multiplyInt, "ExprUtility.Multiply(int, int) not found");
+            _multiplyLong = mod.Import(exprUtilityType.GetMethod("Multiply", new[] { typeof(long), typeof(long) }));
+            Assert.IsNotNull(_multiplyLong, "ExprUtility.Multiply(long, long) not found");
+            _multiplyFloat = mod.Import(exprUtilityType.GetMethod("Multiply", new[] { typeof(float), typeof(float) }));
+            Assert.IsNotNull(_multiplyFloat, "ExprUtility.Multiply(float, float) not found");
+            _multiplyDouble = mod.Import(exprUtilityType.GetMethod("Multiply", new[] { typeof(double), typeof(double) }));
+            Assert.IsNotNull(_multiplyDouble, "ExprUtility.Multiply(double, double) not found");
+            _multiplyIntPtr = mod.Import(exprUtilityType.GetMethod("Multiply", new[] { typeof(IntPtr), typeof(IntPtr) }));
+            Assert.IsNotNull(_multiplyIntPtr, "ExprUtility.Multiply(IntPtr, IntPtr) not found");
+            _multiplyIntPtrInt = mod.Import(exprUtilityType.GetMethod("Multiply", new[] { typeof(IntPtr), typeof(int) }));
+            Assert.IsNotNull(_multiplyIntPtrInt, "ExprUtility.Multiply(IntPtr, int) not found");
+
+            _divideInt = mod.Import(exprUtilityType.GetMethod("Divide", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_divideInt, "ExprUtility.Divide(int, int) not found");
+            _divideLong = mod.Import(exprUtilityType.GetMethod("Divide", new[] { typeof(long), typeof(long) }));
+            Assert.IsNotNull(_divideLong);
+            _divideFloat = mod.Import(exprUtilityType.GetMethod("Divide", new[] { typeof(float), typeof(float) }));
+            Assert.IsNotNull(_divideFloat, "ExprUtility.Divide(float, float) not found");
+            _divideDouble = mod.Import(exprUtilityType.GetMethod("Divide", new[] { typeof(double), typeof(double) }));
+            Assert.IsNotNull(_divideDouble, "ExprUtility.Divide(double, double) not found");
+            _divideUnInt = mod.Import(exprUtilityType.GetMethod("DivideUn", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_divideUnInt, "ExprUtility.DivideUn(int, int) not found");
+            _divideUnLong = mod.Import(exprUtilityType.GetMethod("DivideUn", new[] { typeof(long), typeof(long) }));
+            Assert.IsNotNull(_divideUnLong, "ExprUtility.DivideUn(long, long) not found");
+            _remInt = mod.Import(exprUtilityType.GetMethod("Rem", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_remInt, "ExprUtility.Rem(int, int) not found");
+            _remLong = mod.Import(exprUtilityType.GetMethod("Rem", new[] { typeof(long), typeof(long) }));
+            Assert.IsNotNull(_remLong, "ExprUtility.Rem(long, long) not found");
+            _remFloat = mod.Import(exprUtilityType.GetMethod("Rem", new[] { typeof(float), typeof(float) }));
+            Assert.IsNotNull(_remFloat, "ExprUtility.Rem(float, float) not found");
+            _remDouble = mod.Import(exprUtilityType.GetMethod("Rem", new[] { typeof(double), typeof(double) }));
+            Assert.IsNotNull(_remDouble, "ExprUtility.Rem(double, double) not found");
+            _remUnInt = mod.Import(exprUtilityType.GetMethod("RemUn", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_remUnInt, "ExprUtility.RemUn(int, int) not found");
+            _remUnLong = mod.Import(exprUtilityType.GetMethod("RemUn", new[] { typeof(long), typeof(long) }));
+            Assert.IsNotNull(_remUnLong, "ExprUtility.RemUn(long, long) not found");
+            _negInt = mod.Import(exprUtilityType.GetMethod("Negate", new[] { typeof(int) }));
+            Assert.IsNotNull(_negInt, "ExprUtility.Negate(int) not found");
+            _negLong = mod.Import(exprUtilityType.GetMethod("Negate", new[] { typeof(long) }));
+            Assert.IsNotNull(_negLong, "ExprUtility.Negate(long) not found");
+            _negFloat = mod.Import(exprUtilityType.GetMethod("Negate", new[] { typeof(float) }));
+            Assert.IsNotNull(_negFloat, "ExprUtility.Negate(float) not found");
+            _negDouble = mod.Import(exprUtilityType.GetMethod("Negate", new[] { typeof(double) }));
+            Assert.IsNotNull(_negDouble, "ExprUtility.Negate(double) not found");
+
+            _andInt = mod.Import(exprUtilityType.GetMethod("And", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_andInt, "ExprUtility.And(int, int) not found");
+            _andLong = mod.Import(exprUtilityType.GetMethod("And", new[] { typeof(long), typeof(long) }));
+            Assert.IsNotNull(_andLong, "ExprUtility.And(long, long) not found");
+            _orInt = mod.Import(exprUtilityType.GetMethod("Or", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_orInt, "ExprUtility.Or(int, int) not found");
+            _orLong = mod.Import(exprUtilityType.GetMethod("Or", new[] { typeof(long), typeof(long) }));
+            Assert.IsNotNull(_orLong, "ExprUtility.Or(long, long) not found");
+            _xorInt = mod.Import(exprUtilityType.GetMethod("Xor", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_xorInt, "ExprUtility.Xor(int, int) not found");
+            _xorLong = mod.Import(exprUtilityType.GetMethod("Xor", new[] { typeof(long), typeof(long) }));
+            Assert.IsNotNull(_xorLong, "ExprUtility.Xor(long, long) not found");
+            _notInt = mod.Import(exprUtilityType.GetMethod("Not", new[] { typeof(int) }));
+            Assert.IsNotNull(_notInt, "ExprUtility.Not(int) not found");
+            _notLong = mod.Import(exprUtilityType.GetMethod("Not", new[] { typeof(long) }));
+            Assert.IsNotNull(_notLong, "ExprUtility.Not(long) not found");
+
+            _shlInt = mod.Import(exprUtilityType.GetMethod("ShiftLeft", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_shlInt, "ExprUtility.ShiftLeft(int, int) not found");
+            _shlLong = mod.Import(exprUtilityType.GetMethod("ShiftLeft", new[] { typeof(long), typeof(int) }));
+            Assert.IsNotNull(_shlLong, "ExprUtility.ShiftLeft(long, int) not found");
+            _shrInt = mod.Import(exprUtilityType.GetMethod("ShiftRight", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_shrInt, "ExprUtility.ShiftRight(int, int) not found");
+            _shrLong = mod.Import(exprUtilityType.GetMethod("ShiftRight", new[] { typeof(long), typeof(int) }));
+            Assert.IsNotNull(_shrLong, "ExprUtility.ShiftRight(long, int) not found");
+            _shrUnInt = mod.Import(exprUtilityType.GetMethod("ShiftRightUn", new[] { typeof(int), typeof(int) }));
+            Assert.IsNotNull(_shrUnInt, "ExprUtility.ShiftRightUn(int, int) not found");
+            _shrUnLong = mod.Import(exprUtilityType.GetMethod("ShiftRightUn", new[] { typeof(long), typeof(int) }));
+            Assert.IsNotNull(_shrUnLong, "ExprUtility.ShiftRightUn(long, int) not found");
+
+
+            _staticDefaultEncryptionServiceMetadataImporter = new EncryptionServiceMetadataImporter(mod, typeof(EncryptionService<DefaultStaticEncryptionScope>));
+            _dynamicDefaultEncryptionServiceMetadataImporter = new EncryptionServiceMetadataImporter(mod, typeof(EncryptionService<DefaultDynamicEncryptionScope>));
+            if (EncryptionScopeProvider.IsDynamicSecretAssembly(mod))
+            {
+                _defaultEncryptionServiceMetadataImporter = _dynamicDefaultEncryptionServiceMetadataImporter;
+            }
+            else
+            {
+                _defaultEncryptionServiceMetadataImporter = _staticDefaultEncryptionServiceMetadataImporter;
+            }
+        }
+
+        public override void Done()
+        {
+
+        }
+
+        public EncryptionServiceMetadataImporter GetEncryptionServiceMetadataImporterOfModule(ModuleDef mod)
+        {
+            return EncryptionScopeProvider.IsDynamicSecretAssembly(mod) ? _dynamicDefaultEncryptionServiceMetadataImporter : _staticDefaultEncryptionServiceMetadataImporter;
+        }
+
+        private ModuleDef _module;
+        private IMethod _castIntAsFloat;
+        private IMethod _castLongAsDouble;
+        private IMethod _castFloatAsInt;
+        private IMethod _castDoubleAsLong;
+        private IMethod _initializeArray;
+        private IMethod _verifySecretKey;
+
+        private IMethod _obfuscationTypeMapperRegisterType;
+
+        private IMethod _addInt;
+        private IMethod _addLong;
+        private IMethod _addFloat;
+        private IMethod _addDouble;
+        private IMethod _addIntPtr;
+        private IMethod _addIntPtrInt;
+        private IMethod _subtractInt;
+        private IMethod _subtractLong;
+        private IMethod _subtractFloat;
+        private IMethod _subtractDouble;
+        private IMethod _subtractIntPtr;
+        private IMethod _subtractIntPtrInt;
+        private IMethod _multiplyInt;
+        private IMethod _multiplyLong;
+        private IMethod _multiplyFloat;
+        private IMethod _multiplyDouble;
+        private IMethod _multiplyIntPtr;
+        private IMethod _multiplyIntPtrInt;
+        private IMethod _divideInt;
+        private IMethod _divideLong;
+        private IMethod _divideFloat;
+        private IMethod _divideDouble;
+        private IMethod _divideUnInt;
+        private IMethod _divideUnLong;
+        private IMethod _remInt;
+        private IMethod _remLong;
+        private IMethod _remFloat;
+        private IMethod _remDouble;
+        private IMethod _remUnInt;
+        private IMethod _remUnLong;
+        private IMethod _negInt;
+        private IMethod _negLong;
+        private IMethod _negFloat;
+        private IMethod _negDouble;
+
+        private IMethod _andInt;
+        private IMethod _andLong;
+        private IMethod _orInt;
+        private IMethod _orLong;
+        private IMethod _xorInt;
+        private IMethod _xorLong;
+        private IMethod _notInt;
+        private IMethod _notLong;
+
+        private IMethod _shlInt;
+        private IMethod _shlLong;
+        private IMethod _shrInt;
+        private IMethod _shrLong;
+        private IMethod _shrUnInt;
+        private IMethod _shrUnLong;
+
+        public IMethod CastIntAsFloat => _castIntAsFloat;
+        public IMethod CastLongAsDouble => _castLongAsDouble;
+        public IMethod CastFloatAsInt => _castFloatAsInt;
+        public IMethod CastDoubleAsLong => _castDoubleAsLong;
+
+        public IMethod InitializedArray => _initializeArray;
+
+        public IMethod VerifySecretKey => _verifySecretKey;
+
+        public IMethod ObfuscationTypeMapperRegisterType => _obfuscationTypeMapperRegisterType;
+
+        public IMethod EncryptBlock => _defaultEncryptionServiceMetadataImporter.EncryptBlock;
+        public IMethod DecryptBlock => _defaultEncryptionServiceMetadataImporter.DecryptBlock;
+
+        public IMethod EncryptInt => _defaultEncryptionServiceMetadataImporter.EncryptInt;
+        public IMethod DecryptInt => _defaultEncryptionServiceMetadataImporter.DecryptInt;
+        public IMethod EncryptLong => _defaultEncryptionServiceMetadataImporter.EncryptLong;
+        public IMethod DecryptLong => _defaultEncryptionServiceMetadataImporter.DecryptLong;
+        public IMethod EncryptFloat => _defaultEncryptionServiceMetadataImporter.EncryptFloat;
+        public IMethod DecryptFloat => _defaultEncryptionServiceMetadataImporter.DecryptFloat;
+        public IMethod EncryptDouble => _defaultEncryptionServiceMetadataImporter.EncryptDouble;
+        public IMethod DecryptDouble => _defaultEncryptionServiceMetadataImporter.DecryptDouble;
+        public IMethod EncryptString => _defaultEncryptionServiceMetadataImporter.EncryptString;
+        public IMethod DecryptString => _defaultEncryptionServiceMetadataImporter.DecryptString;
+        public IMethod EncryptBytes => _defaultEncryptionServiceMetadataImporter.EncryptBytes;
+        public IMethod DecryptBytes => _defaultEncryptionServiceMetadataImporter.DecryptBytes;
+
+        public IMethod DecryptFromRvaInt => _defaultEncryptionServiceMetadataImporter.DecryptFromRvaInt;
+        public IMethod DecryptFromRvaLong => _defaultEncryptionServiceMetadataImporter.DecryptFromRvaLong;
+        public IMethod DecryptFromRvaFloat => _defaultEncryptionServiceMetadataImporter.DecryptFromRvaFloat;
+        public IMethod DecryptFromRvaDouble => _defaultEncryptionServiceMetadataImporter.DecryptFromRvaDouble;
+        public IMethod DecryptFromRvaBytes => _defaultEncryptionServiceMetadataImporter.DecryptFromRvaBytes;
+        public IMethod DecryptFromRvaString => _defaultEncryptionServiceMetadataImporter.DecryptFromRvaString;
+
+        public IMethod DecryptInitializeArray => _defaultEncryptionServiceMetadataImporter.DecryptInitializeArray;
+
+        public IMethod AddInt => _addInt;
+        public IMethod AddLong => _addLong;
+        public IMethod AddFloat => _addFloat;
+        public IMethod AddDouble => _addDouble;
+        public IMethod AddIntPtr => _addIntPtr;
+        public IMethod AddIntPtrInt => _addIntPtrInt;
+        public IMethod SubtractInt => _subtractInt;
+        public IMethod SubtractLong => _subtractLong;
+        public IMethod SubtractFloat => _subtractFloat;
+        public IMethod SubtractDouble => _subtractDouble;
+        public IMethod SubtractIntPtr => _subtractIntPtr;
+        public IMethod SubtractIntPtrInt => _subtractIntPtrInt;
+
+        public IMethod MultiplyInt => _multiplyInt;
+        public IMethod MultiplyLong => _multiplyLong;
+        public IMethod MultiplyFloat => _multiplyFloat;
+        public IMethod MultiplyDouble => _multiplyDouble;
+        public IMethod MultiplyIntPtr => _multiplyIntPtr;
+        public IMethod MultiplyIntPtrInt => _multiplyIntPtrInt;
+
+        public IMethod DivideInt => _divideInt;
+        public IMethod DivideLong => _divideLong;
+        public IMethod DivideFloat => _divideFloat;
+        public IMethod DivideDouble => _divideDouble;
+        public IMethod DivideUnInt => _divideUnInt;
+        public IMethod DivideUnLong => _divideUnLong;
+        public IMethod RemInt => _remInt;
+        public IMethod RemLong => _remLong;
+        public IMethod RemFloat => _remFloat;
+        public IMethod RemDouble => _remDouble;
+        public IMethod RemUnInt => _remUnInt;
+        public IMethod RemUnLong => _remUnLong;
+        public IMethod NegInt => _negInt;
+        public IMethod NegLong => _negLong;
+        public IMethod NegFloat => _negFloat;
+        public IMethod NegDouble => _negDouble;
+        public IMethod AndInt => _andInt;
+        public IMethod AndLong => _andLong;
+        public IMethod OrInt => _orInt;
+        public IMethod OrLong => _orLong;
+        public IMethod XorInt => _xorInt;
+        public IMethod XorLong => _xorLong;
+        public IMethod NotInt => _notInt;
+        public IMethod NotLong => _notLong;
+        public IMethod ShlInt => _shlInt;
+        public IMethod ShlLong => _shlLong;
+        public IMethod ShrInt => _shrInt;
+        public IMethod ShrLong => _shrLong;
+        public IMethod ShrUnInt => _shrUnInt;
+        public IMethod ShrUnLong => _shrUnLong;
+
+
+    }
+}

Editor/Emit/EntityExtensions.cs

@@ -0,0 +1,15 @@
+namespace Obfuz.Emit
+{
+    public static class EntityExtensions
+    {
+        public static T GetEntity<T>(this IGroupByModuleEntity entity) where T : IGroupByModuleEntity, new()
+        {
+            return entity.Manager.GetEntity<T>(entity.Module);
+        }
+
+        public static DefaultMetadataImporter GetDefaultModuleMetadataImporter(this IGroupByModuleEntity entity)
+        {
+            return entity.GetEntity<DefaultMetadataImporter>();
+        }
+    }
+}

Editor/Emit/EntityExtensions.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 639006a739675484884778c298eebdc4
+guid: 6e9557733f180764692756653eb60f88
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Editor/Emit/EvalStackCalculator.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 639006a739675484884778c298eebdc4
+guid: f25425a3077f6db41873dee4223d0abc
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Editor/Emit/GroupByModuleEntityManager.cs

@@ -0,0 +1,89 @@
+using dnlib.DotNet;
+using System;
+using System.Collections.Generic;
+
+namespace Obfuz.Emit
+{
+    public interface IGroupByModuleEntity
+    {
+        GroupByModuleEntityManager Manager { get; set; }
+
+        ModuleDef Module { get; set; }
+
+        EncryptionScopeProvider EncryptionScopeProvider { get; }
+
+        EncryptionScopeInfo EncryptionScope { get; set; }
+
+        void Init();
+
+        void Done();
+    }
+
+    public abstract class GroupByModuleEntityBase : IGroupByModuleEntity
+    {
+        public GroupByModuleEntityManager Manager { get; set; }
+
+        public ModuleDef Module { get; set; }
+
+        public EncryptionScopeInfo EncryptionScope { get; set; }
+
+        public EncryptionScopeProvider EncryptionScopeProvider => Manager.EncryptionScopeProvider;
+
+        public T GetEntity<T>() where T : IGroupByModuleEntity, new()
+        {
+            return Manager.GetEntity<T>(Module);
+        }
+
+        public abstract void Init();
+
+        public abstract void Done();
+    }
+
+    public class GroupByModuleEntityManager
+    {
+        private readonly Dictionary<(ModuleDef, Type), IGroupByModuleEntity> _moduleEntityManagers = new Dictionary<(ModuleDef, Type), IGroupByModuleEntity>();
+
+        public EncryptionScopeProvider EncryptionScopeProvider { get; set; }
+
+        public T GetEntity<T>(ModuleDef mod) where T : IGroupByModuleEntity, new()
+        {
+            var key = (mod, typeof(T));
+            if (_moduleEntityManagers.TryGetValue(key, out var emitManager))
+            {
+                return (T)emitManager;
+            }
+            else
+            {
+                T newEmitManager = new T();
+                newEmitManager.Manager = this;
+                newEmitManager.Module = mod;
+                newEmitManager.EncryptionScope = EncryptionScopeProvider.GetScope(mod);
+                newEmitManager.Init();
+                _moduleEntityManagers[key] = newEmitManager;
+                return newEmitManager;
+            }
+        }
+
+        public List<T> GetEntities<T>() where T : IGroupByModuleEntity, new()
+        {
+            var managers = new List<T>();
+            foreach (var kv in _moduleEntityManagers)
+            {
+                if (kv.Key.Item2 == typeof(T))
+                {
+                    managers.Add((T)kv.Value);
+                }
+            }
+            return managers;
+        }
+
+        public void Done<T>() where T : IGroupByModuleEntity, new()
+        {
+            var managers = GetEntities<T>();
+            foreach (var manager in managers)
+            {
+                manager.Done();
+            }
+        }
+    }
+}

Editor/Emit/LocalVariableAllocator.cs

@@ -0,0 +1,74 @@
+using dnlib.DotNet;
+using dnlib.DotNet.Emit;
+using System;
+using System.Collections.Generic;
+
+namespace Obfuz.Emit
+{
+    class ScopeLocalVariables : IDisposable
+    {
+        private readonly LocalVariableAllocator _localVariableAllocator;
+
+        private readonly List<Local> _allocatedVars = new List<Local>();
+
+        public IReadOnlyList<Local> AllocatedLocals => _allocatedVars;
+
+
+        public ScopeLocalVariables(LocalVariableAllocator localVariableAllocator)
+        {
+            _localVariableAllocator = localVariableAllocator;
+        }
+
+        public Local AllocateLocal(TypeSig type)
+        {
+            var local = _localVariableAllocator.AllocateLocal(type);
+            _allocatedVars.Add(local);
+            return local;
+        }
+
+        public void Dispose()
+        {
+            foreach (var local in _allocatedVars)
+            {
+                _localVariableAllocator.ReturnLocal(local);
+            }
+        }
+    }
+
+    class LocalVariableAllocator
+    {
+        private readonly MethodDef _method;
+        private readonly List<Local> _freeLocals = new List<Local>();
+
+        public LocalVariableAllocator(MethodDef method)
+        {
+            _method = method;
+        }
+
+        public Local AllocateLocal(TypeSig type)
+        {
+            foreach (var local in _freeLocals)
+            {
+                if (TypeEqualityComparer.Instance.Equals(local.Type, type))
+                {
+                    _freeLocals.Remove(local);
+                    return local;
+                }
+            }
+            var newLocal = new Local(type);
+            // _freeLocals.Add(newLocal);
+            _method.Body.Variables.Add(newLocal);
+            return newLocal;
+        }
+
+        public void ReturnLocal(Local local)
+        {
+            _freeLocals.Add(local);
+        }
+
+        public ScopeLocalVariables CreateScope()
+        {
+            return new ScopeLocalVariables(this);
+        }
+    }
+}

Editor/Emit/LocalVariableAllocator.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 406c63e9d464ca544ac337bc8fcce30e
+guid: 955da34fbde179641a94108ec53405ce
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Editor/EncryptionVM/Instructions/AddRotateXorInstruction.cs

@@ -1,8 +1,4 @@
-using System;
+using System.Collections.Generic;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Obfuz.EncryptionVM.Instructions
 {

Editor/EncryptionVM/Instructions/AddXorRotateInstruction.cs

@@ -1,8 +1,4 @@
-using System;
+using System.Collections.Generic;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Obfuz.EncryptionVM.Instructions
 {

Editor/EncryptionVM/Instructions/EncryptFunction.cs

@@ -1,8 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Obfuz.EncryptionVM.Instructions
 {

Editor/EncryptionVM/Instructions/MultipleInstruction.cs

@@ -1,5 +1,4 @@
-using NUnit.Framework;
+using Obfuz.Utils;
-using System;
 using System.Collections.Generic;
 
 namespace Obfuz.EncryptionVM.Instructions
@@ -14,31 +13,14 @@ namespace Obfuz.EncryptionVM.Instructions
         {
             _multiValue = addValue;
             _opKeyIndex = opKeyIndex;
-            _revertMultiValue = (int)ModInverseOdd((uint)addValue);
+            _revertMultiValue = MathUtil.ModInverse32(addValue);
             Verify();
         }
 
         private void Verify()
         {
             int a = 1122334;
-            Assert.AreEqual(a, a * _multiValue * _revertMultiValue);
+            UnityEngine.Assertions.Assert.AreEqual(a, a * _multiValue * _revertMultiValue);
-        }
-
-        public static uint ModInverseOdd(uint a)
-        {
-            if (a % 2 == 0)
-                throw new ArgumentException("Input must be an odd number.", nameof(a));
-
-            uint x = 1; // 初始解：x₀ = 1 (mod 2)
-            for (int i = 0; i < 5; i++) // 迭代5次（2^1 → 2^32）
-            {
-                int shift = 2 << i;        // 当前模数为 2^(2^(i+1))
-                ulong mod = 1UL << shift; // 使用 ulong 避免溢出
-                ulong ax = (ulong)a * x;  // 计算 a*x（64位避免截断）
-                ulong term = (2 - ax) % mod;
-                x = (uint)((x * term) % mod); // 更新 x，结果截断为 uint
-            }
-            return x; // 最终解为 x₅ mod 2^32
         }
 
         public override int Encrypt(int value, int[] secretKey, int salt)

Editor/EncryptionVM/Instructions/MultipleRotateXorInstruction.cs

@@ -1,8 +1,5 @@
-using System;
+using Obfuz.Utils;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Obfuz.EncryptionVM.Instructions
 {
@@ -21,7 +18,7 @@ namespace Obfuz.EncryptionVM.Instructions
         public MultipleRotateXorInstruction(int multipleValue, int index1, int rotateBitNum, int xorValue)
         {
             _multipleValue = multipleValue;
-            _revertMultipleValue = (int)MultipleInstruction.ModInverseOdd((uint)multipleValue);
+            _revertMultipleValue = MathUtil.ModInverse32(multipleValue);
             _index1 = index1;
             _rotateBitNum = rotateBitNum;
             _xorValue = xorValue;

Editor/EncryptionVM/Instructions/MultipleXorRotateInstruction.cs

@@ -1,8 +1,5 @@
-using System;
+using Obfuz.Utils;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Obfuz.EncryptionVM.Instructions
 {
@@ -21,7 +18,7 @@ namespace Obfuz.EncryptionVM.Instructions
         public MultipleXorRotateInstruction(int multipleValue, int index1, int xorValue, int rotateBitNum)
         {
             _multipleValue = multipleValue;
-            _revertMultipleValue = (int)MultipleInstruction.ModInverseOdd((uint)multipleValue);
+            _revertMultipleValue = MathUtil.ModInverse32(multipleValue);
             _index1 = index1;
             _rotateBitNum = rotateBitNum;
             _xorValue = xorValue;

Editor/EncryptionVM/Instructions/XorAddRotateInstruction.cs

@@ -1,8 +1,4 @@
-using System;
+using System.Collections.Generic;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Obfuz.EncryptionVM.Instructions
 {

Editor/EncryptionVM/Instructions/XorMultipleRotateInstruction.cs

@@ -1,8 +1,5 @@
-using System;
+using Obfuz.Utils;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Obfuz.EncryptionVM.Instructions
 {
@@ -21,7 +18,7 @@ namespace Obfuz.EncryptionVM.Instructions
         public XorMultipleRotateInstruction(int xorValue, int multipleValue, int index1, int rotateBitNum)
         {
             _multipleValue = multipleValue;
-            _revertMultipleValue = (int)MultipleInstruction.ModInverseOdd((uint)multipleValue);
+            _revertMultipleValue = MathUtil.ModInverse32(multipleValue);
             _index1 = index1;
             _rotateBitNum = rotateBitNum;
             _xorValue = xorValue;

Editor/EncryptionVM/VirtualMachineCodeGenerator.cs

@@ -1,11 +1,8 @@
 using Obfuz.Utils;
-using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Linq;
 using System.Text;
 using System.Text.RegularExpressions;
-using System.Threading.Tasks;
 using UnityEngine;
 
 namespace Obfuz.EncryptionVM
@@ -55,7 +52,6 @@ namespace Obfuz.EncryptionVM
 
             File.WriteAllText(outputFile, code, Encoding.UTF8);
             Debug.Log($"Generate EncryptionVM code to {outputFile}");
-            UnityEditor.AssetDatabase.Refresh();
         }
 
         private string GenerateCode()

Editor/EncryptionVM/VirtualMachineCreator.cs

@@ -1,10 +1,7 @@
-using NUnit.Framework;
+using Obfuz.EncryptionVM.Instructions;
-using Obfuz.EncryptionVM.Instructions;
 using Obfuz.Utils;
 using System;
 using System.Collections.Generic;
-using UnityEngine.Assertions;
-using UnityEngine.UIElements;
 
 namespace Obfuz.EncryptionVM
 {

Editor/EncryptionVM/VirtualMachineSimulator.cs

@@ -1,12 +1,6 @@
 using Obfuz.Utils;
-using System;
 using System.Collections.Generic;
-using System.Linq.Expressions;
-using System.Runtime.CompilerServices;
-using System.Text;
-using UnityEngine;
 using UnityEngine.Assertions;
-using UnityEngine.UIElements;
 
 namespace Obfuz.EncryptionVM
 {
@@ -47,7 +41,7 @@ namespace Obfuz.EncryptionVM
             byte[] strBytes = Encrypt("abcdef", ops, salt);
             Assert.AreEqual("abcdef", DecryptString(strBytes, 0, strBytes.Length, ops, salt));
             var arr = new byte[100];
-            for (int i = 0; i < arr.Length ; i++)
+            for (int i = 0; i < arr.Length; i++)
             {
                 arr[i] = (byte)i;
             }

Editor/GarbageCodeGeneration.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 5be12685e3d38a24ab47ccfde4f424a1
+guid: f47f2abd9eb7ba8469ba5cb1bb085d33
 folderAsset: yes
 DefaultImporter:
   externalObjects: {}

Editor/GarbageCodeGeneration/ConfigGarbageCodeGenerator.cs

@@ -0,0 +1,117 @@
+using Obfuz.Utils;
+using System;
+using System.Linq;
+using System.Text;
+
+namespace Obfuz.GarbageCodeGeneration
+{
+
+    public class ConfigGarbageCodeGenerator : SpecificGarbageCodeGeneratorBase
+    {
+
+        private readonly string[] _types = new string[]
+        {
+            "bool",
+            "byte",
+            "short",
+            "int",
+            "long",
+            "float",
+            "double",
+        };
+
+        private string CreateRandomType(IRandom random)
+        {
+            return _types[random.NextInt(_types.Length)];
+        }
+
+        private string GetReadMethodNameOfType(string type)
+        {
+            switch (type)
+            {
+                case "bool": return "ReadBoolean";
+                case "byte": return "ReadByte";
+                case "short": return "ReadInt16";
+                case "int": return "ReadInt32";
+                case "long": return "ReadInt64";
+                case "float": return "ReadSingle";
+                case "double": return "ReadDouble";
+                default: throw new ArgumentException($"Unsupported type: {type}");
+            }
+        }
+        class FieldGenerationInfo
+        {
+            public int index;
+            public string name;
+            public string type;
+        }
+
+        class MethodGenerationInfo
+        {
+            public int index;
+            public string name;
+        }
+
+        protected override object CreateField(int index, IRandom random, GenerationParameters parameters)
+        {
+            return new FieldGenerationInfo
+            {
+                index = index,
+                name = $"x{index}",
+                type = CreateRandomType(random),
+            };
+        }
+
+        protected override object CreateMethod(int index, IRandom random, GenerationParameters parameters)
+        {
+            return new MethodGenerationInfo
+            {
+                index = index,
+                name = $"Load{index}",
+            };
+        }
+
+        protected override void GenerateUsings(StringBuilder result, IClassGenerationInfo cgi)
+        {
+        }
+
+        protected override void GenerateField(StringBuilder result, IClassGenerationInfo cgi, IRandom random, object field, string indent)
+        {
+            var fgi = (FieldGenerationInfo)field;
+            result.AppendLine($"{indent}public {fgi.type} {fgi.name};");
+        }
+
+        protected override void GenerateMethod(StringBuilder result, IClassGenerationInfo cgi, IRandom random, object method, string indent)
+        {
+            var mgi = (MethodGenerationInfo)method;
+            result.AppendLine($"{indent}public void {mgi.name}(BinaryReader reader)");
+            result.AppendLine($"{indent}{{");
+
+            string indent2 = indent + "    ";
+            result.AppendLine($"{indent2}int a = 0;");
+            result.AppendLine($"{indent2}int b = 0;");
+            int maxN = 100;
+            var shuffledFields = cgi.Fields.ToList();
+            RandomUtil.ShuffleList(shuffledFields, random);
+            foreach (FieldGenerationInfo fgi in shuffledFields)
+            {
+                result.AppendLine($"{indent2}this.{fgi.name} = reader.{GetReadMethodNameOfType(fgi.type)}();");
+                if (random.NextInPercentage(0.5f))
+                {
+                    result.AppendLine($"{indent2}a = b * {random.NextInt(maxN)} + reader.ReadInt32();");
+                    result.AppendLine($"{indent2}b = a * reader.ReadInt32() + {random.NextInt(maxN)};");
+                }
+                if (random.NextInPercentage(0.5f))
+                {
+                    result.AppendLine($"{indent2}a += {random.NextInt(0, 10000)};");
+                }
+                if (random.NextInPercentage(0.5f))
+                {
+                    result.AppendLine($"{indent2}b += {random.NextInt(0, 10000)};");
+                }
+            }
+
+            result.AppendLine($"{indent}}}");
+        }
+    }
+}

Editor/GarbageCodeGeneration/ConfigGarbageCodeGenerator.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 406c63e9d464ca544ac337bc8fcce30e
+guid: 327cb4a465ff23944a5fea30bf3beeeb
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Editor/GarbageCodeGeneration/GarbageCodeGenerator.cs

@@ -0,0 +1,88 @@
+using Obfuz.Settings;
+using Obfuz.Utils;
+using System;
+using UnityEngine;
+
+namespace Obfuz.GarbageCodeGeneration
+{
+
+    public class GarbageCodeGenerator
+    {
+        private const int CodeGenerationSecretKeyLength = 1024;
+
+        private readonly GarbageCodeGenerationSettings _settings;
+        private readonly int[] _intGenerationSecretKey;
+
+        public GarbageCodeGenerator(GarbageCodeGenerationSettings settings)
+        {
+            _settings = settings;
+
+            byte[] byteGenerationSecretKey = KeyGenerator.GenerateKey(settings.codeGenerationSecret, CodeGenerationSecretKeyLength);
+            _intGenerationSecretKey = KeyGenerator.ConvertToIntKey(byteGenerationSecretKey);
+        }
+
+        public void Generate()
+        {
+            GenerateTask(_settings.defaultTask);
+            if (_settings.additionalTasks != null && _settings.additionalTasks.Length > 0)
+            {
+                foreach (var task in _settings.additionalTasks)
+                {
+                    GenerateTask(task);
+                }
+            }
+        }
+
+        public void CleanCodes()
+        {
+            Debug.Log($"Cleaning generated garbage codes begin.");
+            if (_settings.defaultTask != null)
+            {
+                FileUtil.RemoveDir(_settings.defaultTask.outputPath, true);
+            }
+            if (_settings.additionalTasks != null && _settings.additionalTasks.Length > 0)
+            {
+                foreach (var task in _settings.additionalTasks)
+                {
+                    FileUtil.RemoveDir(task.outputPath, true);
+                }
+            }
+        }
+
+        private void GenerateTask(GarbageCodeGenerationTask task)
+        {
+            Debug.Log($"Generating garbage code with seed: {task.codeGenerationRandomSeed}, class count: {task.classCount}, method count per class: {task.methodCountPerClass}, types: {task.garbageCodeType}, output path: {task.outputPath}");
+
+            if (string.IsNullOrWhiteSpace(task.outputPath))
+            {
+                throw new Exception("outputPath of GarbageCodeGenerationTask is empty!");
+            }
+
+            var generator = CreateSpecificCodeGenerator(task.garbageCodeType);
+
+            var parameters = new GenerationParameters
+            {
+                random = new RandomWithKey(_intGenerationSecretKey, task.codeGenerationRandomSeed),
+                classNamespace = task.classNamespace,
+                classNamePrefix = task.classNamePrefix,
+                classCount = task.classCount,
+                methodCountPerClass = task.methodCountPerClass,
+                fieldCountPerClass = task.fieldCountPerClass,
+                outputPath = task.outputPath,
+            };
+            generator.Generate(parameters);
+
+            Debug.Log($"Generate garbage code end.");
+        }
+
+        private ISpecificGarbageCodeGenerator CreateSpecificCodeGenerator(GarbageCodeType type)
+        {
+            switch (type)
+            {
+                case GarbageCodeType.Config: return new ConfigGarbageCodeGenerator();
+                case GarbageCodeType.UI: return new UIGarbageCodeGenerator();
+                default: throw new NotSupportedException($"Garbage code type {type} is not supported.");
+            }
+        }
+    }
+}

Editor/GarbageCodeGeneration/GarbageCodeGenerator.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: ff64fd1e6f7b8874db5a5228fab159f9
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Editor/GarbageCodeGeneration/ISpecificGarbageCodeGenerator.cs

@@ -0,0 +1,21 @@
+using Obfuz.Utils;
+
+namespace Obfuz.GarbageCodeGeneration
+{
+    public class GenerationParameters
+    {
+        public IRandom random;
+
+        public string classNamespace;
+        public string classNamePrefix;
+        public int classCount;
+        public int methodCountPerClass;
+        public int fieldCountPerClass;
+        public string outputPath;
+    }
+
+    public interface ISpecificGarbageCodeGenerator
+    {
+        void Generate(GenerationParameters parameters);
+    }
+}

Editor/GarbageCodeGeneration/ISpecificGarbageCodeGenerator.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 74a17802b5aab2e40a3c89e0ddbcec0d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Editor/GarbageCodeGeneration/SpecificGarbageCodeGeneratorBase.cs

@@ -0,0 +1,106 @@
+using Obfuz.Utils;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using UnityEngine;
+
+namespace Obfuz.GarbageCodeGeneration
+{
+    public abstract class SpecificGarbageCodeGeneratorBase : ISpecificGarbageCodeGenerator
+    {
+        protected interface IClassGenerationInfo
+        {
+            string Namespace { get; set; }
+
+            string Name { get; set; }
+
+            IList<object> Fields { get; set; }
+
+            IList<object> Methods { get; set; }
+        }
+
+        protected class ClassGenerationInfo : IClassGenerationInfo
+        {
+            public string Namespace { get; set; }
+            public string Name { get; set; }
+            public IList<object> Fields { get; set; } = new List<object>();
+            public IList<object> Methods { get; set; } = new List<object>();
+        }
+
+        public virtual void Generate(GenerationParameters parameters)
+        {
+            FileUtil.RecreateDir(parameters.outputPath);
+
+            for (int i = 0; i < parameters.classCount; i++)
+            {
+                Debug.Log($"[{GetType().Name}] Generating class {i}");
+                var localRandom = new RandomWithKey(((RandomWithKey)parameters.random).Key, parameters.random.NextInt());
+                string outputFile = $"{parameters.outputPath}/__GeneratedGarbageClass_{i}.cs";
+                var result = new StringBuilder(64 * 1024);
+                GenerateClass(i, localRandom, result, parameters);
+                File.WriteAllText(outputFile, result.ToString(), Encoding.UTF8);
+                Debug.Log($"[{GetType().Name}] Generated class {i} to {outputFile}");
+            }
+        }
+
+        protected abstract object CreateField(int index, IRandom random, GenerationParameters parameters);
+
+        protected abstract object CreateMethod(int index, IRandom random, GenerationParameters parameters);
+
+        protected virtual IClassGenerationInfo CreateClassGenerationInfo(string classNamespace, string className, IRandom random, GenerationParameters parameters)
+        {
+            var cgi = new ClassGenerationInfo
+            {
+                Namespace = classNamespace,
+                Name = className,
+            };
+
+            for (int i = 0; i < parameters.fieldCountPerClass; i++)
+            {
+                cgi.Fields.Add(CreateField(i, random, parameters));
+            }
+
+            for (int i = 0; i < parameters.methodCountPerClass; i++)
+            {
+                cgi.Methods.Add(CreateMethod(i, random, parameters));
+            }
+
+            return cgi;
+        }
+
+        protected virtual void GenerateClass(int classIndex, IRandom random, StringBuilder result, GenerationParameters parameters)
+        {
+            IClassGenerationInfo cgi = CreateClassGenerationInfo(parameters.classNamespace, $"{parameters.classNamePrefix}{classIndex}", random, parameters);
+            result.AppendLine("using System;");
+            result.AppendLine("using System.Collections.Generic;");
+            result.AppendLine("using System.Linq;");
+            result.AppendLine("using System.IO;");
+            result.AppendLine("using UnityEngine;");
+
+            GenerateUsings(result, cgi);
+
+            result.AppendLine($"namespace {cgi.Namespace}");
+            result.AppendLine("{");
+            result.AppendLine($"    public class {cgi.Name}");
+            result.AppendLine("    {");
+
+            string indent = "        ";
+            foreach (object field in cgi.Fields)
+            {
+                GenerateField(result, cgi, random, field, indent);
+            }
+            foreach (object method in cgi.Methods)
+            {
+                GenerateMethod(result, cgi, random, method, indent);
+            }
+            result.AppendLine("    }");
+            result.AppendLine("}");
+        }
+
+        protected abstract void GenerateUsings(StringBuilder result, IClassGenerationInfo cgi);
+
+        protected abstract void GenerateField(StringBuilder result, IClassGenerationInfo cgi, IRandom random, object field, string indent);
+
+        protected abstract void GenerateMethod(StringBuilder result, IClassGenerationInfo cgi, IRandom random, object method, string indent);
+    }
+}

Editor/GarbageCodeGeneration/SpecificGarbageCodeGeneratorBase.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: bae18fd49482f00439d37f28a6a78d9b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Editor/GarbageCodeGeneration/UIGarbageCodeGenerator.cs

@@ -0,0 +1,157 @@
+using Obfuz.Utils;
+using System;
+using System.Linq;
+using System.Text;
+
+namespace Obfuz.GarbageCodeGeneration
+{
+
+    public class UIGarbageCodeGenerator : SpecificGarbageCodeGeneratorBase
+    {
+        /*
+         * 
+         *         public Button b1;
+        public Image b2;
+        public RawImage b30;
+        public Text b3;
+        public Slider b4;
+        public ScrollRect b5;
+        public Scrollbar b6;
+        public Mask b7;
+        public RectMask2D b70;
+        public Canvas b8;
+        public CanvasGroup b9;
+        public RectTransform b10;
+        public Transform b11;
+        public GameObject b12;
+         */
+
+        private readonly string[] _types = new string[]
+        {
+            "Button",
+            "Image",
+            "RawImage",
+            "Text",
+            "Slider",
+            "ScrollRect",
+            "Scrollbar",
+            "Mask",
+            "RectMask2D",
+            "Canvas",
+            "CanvasGroup",
+            "RectTransform",
+            //"Transform",
+            //"GameObject",
+        };
+
+        private string CreateRandomType(IRandom random)
+        {
+            return _types[random.NextInt(_types.Length)];
+        }
+
+        private string GetReadMethodNameOfType(string type)
+        {
+            switch (type)
+            {
+                case "bool": return "ReadBoolean";
+                case "byte": return "ReadByte";
+                case "short": return "ReadInt16";
+                case "int": return "ReadInt32";
+                case "long": return "ReadInt64";
+                case "float": return "ReadSingle";
+                case "double": return "ReadDouble";
+                default: throw new ArgumentException($"Unsupported type: {type}");
+            }
+        }
+        class FieldGenerationInfo
+        {
+            public int index;
+            public string name;
+            public string type;
+        }
+
+        class MethodGenerationInfo
+        {
+            public int index;
+            public string name;
+        }
+
+        protected override object CreateField(int index, IRandom random, GenerationParameters parameters)
+        {
+            return new FieldGenerationInfo
+            {
+                index = index,
+                name = $"x{index}",
+                type = CreateRandomType(random),
+            };
+        }
+
+        protected override object CreateMethod(int index, IRandom random, GenerationParameters parameters)
+        {
+            return new MethodGenerationInfo
+            {
+                index = index,
+                name = $"Init{index}",
+            };
+        }
+
+        protected override void GenerateUsings(StringBuilder result, IClassGenerationInfo cgi)
+        {
+            result.AppendLine("using UnityEngine.UI;");
+        }
+
+        protected override void GenerateField(StringBuilder result, IClassGenerationInfo cgi, IRandom random, object field, string indent)
+        {
+            var fgi = (FieldGenerationInfo)field;
+            result.AppendLine($"{indent}public {fgi.type} {fgi.name};");
+        }
+
+        protected override void GenerateMethod(StringBuilder result, IClassGenerationInfo cgi, IRandom random, object method, string indent)
+        {
+            var mgi = (MethodGenerationInfo)method;
+            result.AppendLine($"{indent}public void {mgi.name}(GameObject go)");
+            result.AppendLine($"{indent}{{");
+
+            string indent2 = indent + "    ";
+            result.AppendLine($"{indent2}int a = 0;");
+            result.AppendLine($"{indent2}int b = 0;");
+            int maxN = 100;
+            var shuffledFields = cgi.Fields.ToList();
+            RandomUtil.ShuffleList(shuffledFields, random);
+            foreach (FieldGenerationInfo fgi in shuffledFields)
+            {
+                if (random.NextInPercentage(0.5f))
+                {
+                    result.AppendLine($"{indent2}this.{fgi.name} = go.transform.Find(\"ui/{fgi.name}\").GetComponent<{fgi.type}>();");
+                }
+                else
+                {
+                    result.AppendLine($"{indent2}this.{fgi.name} = go.GetComponent<{fgi.type}>();");
+                }
+                if (random.NextInPercentage(0.5f))
+                {
+                    result.AppendLine($"{indent2}a = b * {random.NextInt(maxN)} + go.layer;");
+                    result.AppendLine($"{indent2}b = a * go.layer + {random.NextInt(maxN)};");
+                }
+                if (random.NextInPercentage(0.5f))
+                {
+                    result.AppendLine($"{indent2}a *= {random.NextInt(0, 10000)};");
+                }
+                if (random.NextInPercentage(0.5f))
+                {
+                    result.AppendLine($"{indent2}b /= {random.NextInt(0, 10000)};");
+                }
+                if (random.NextInPercentage(0.5f))
+                {
+                    result.AppendLine($"{indent2}a = a * b << {random.NextInt(0, 10000)};");
+                }
+                if (random.NextInPercentage(0.5f))
+                {
+                    result.AppendLine($"{indent2}b = a / b & {random.NextInt(0, 10000)};");
+                }
+            }
+
+            result.AppendLine($"{indent}}}");
+        }
+    }
+}

Editor/GarbageCodeGeneration/UIGarbageCodeGenerator.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 5071c4b9c7f5aef409f3e7fdb45ecd8d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Editor/IObfuscationPass.cs

@@ -1,9 +1,4 @@
 using Obfuz.ObfusPasses;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace Obfuz
 {

Editor/ObfusPasses/BasicBlockObfuscationPassBase.cs

@@ -1,54 +1,20 @@
-using dnlib.DotNet.Emit;
+using dnlib.DotNet;
-using dnlib.DotNet;
+using dnlib.DotNet.Emit;
-using System.Collections.Generic;
-using System.Linq;
 using Obfuz.Emit;
+using System.Collections.Generic;
 
 namespace Obfuz.ObfusPasses
 {
-    public abstract class BasicBlockObfuscationPassBase : ObfuscationPassBase
+    public abstract class BasicBlockObfuscationPassBase : ObfuscationMethodPassBase
     {
-        protected abstract bool NeedObfuscateMethod(MethodDef method);
+        protected virtual bool ComputeBlockInLoop => true;
-
-        public override void Process()
-        {
-            var ctx = ObfuscationPassContext.Current;
-            ObfuscationMethodWhitelist whiteList = ctx.whiteList;
-            ConfigurablePassPolicy passPolicy = ctx.passPolicy;
-            foreach (ModuleDef mod in ctx.modulesToObfuscate)
-            {
-                if (whiteList.IsInWhiteList(mod) || !Support(passPolicy.GetAssemblyObfuscationPasses(mod)))
-                {
-                    continue;
-                }
-                // ToArray to avoid modify list exception
-                foreach (TypeDef type in mod.GetTypes().ToArray())
-                {
-                    if (whiteList.IsInWhiteList(type) || !Support(passPolicy.GetTypeObfuscationPasses(type)))
-                    {
-                        continue;
-                    }
-                    // ToArray to avoid modify list exception
-                    foreach (MethodDef method in type.Methods.ToArray())
-                    {
-                        if (!method.HasBody || ctx.whiteList.IsInWhiteList(method) || !Support(passPolicy.GetMethodObfuscationPasses(method)) || !NeedObfuscateMethod(method))
-                        {
-                            continue;
-                        }
-                        // TODO if isGeneratedBy Obfuscator, continue
-                        ObfuscateData(method);
-                    }
-                }
-            }
-        }
-
 
         protected abstract bool TryObfuscateInstruction(MethodDef callingMethod, Instruction inst, BasicBlock block, int instructionIndex,
             IList<Instruction> globalInstructions, List<Instruction> outputInstructions, List<Instruction> totalFinalInstructions);
 
-        private void ObfuscateData(MethodDef method)
+        protected override void ObfuscateData(MethodDef method)
         {
-            BasicBlockCollection bbc = new BasicBlockCollection(method);
+            BasicBlockCollection bbc = new BasicBlockCollection(method, ComputeBlockInLoop);
 
             IList<Instruction> instructions = method.Body.Instructions;
 

Editor/ObfusPasses/CallObfus/CallObfusPass.cs

@@ -0,0 +1,166 @@
+using dnlib.DotNet;
+using dnlib.DotNet.Emit;
+using Obfuz.Emit;
+using Obfuz.Settings;
+using Obfuz.Utils;
+using System.Collections.Generic;
+
+namespace Obfuz.ObfusPasses.CallObfus
+{
+    class ObfusMethodContext
+    {
+        public MethodDef method;
+        public LocalVariableAllocator localVariableAllocator;
+        public IRandom localRandom;
+        public EncryptionScopeInfo encryptionScope;
+    }
+
+    public class CallObfusPass : ObfuscationMethodPassBase
+    {
+        public static CallObfuscationSettingsFacade CurrentSettings { get; private set; }
+
+        private readonly CallObfuscationSettingsFacade _settings;
+        private SpecialWhiteListMethodCalculator _specialWhiteListMethodCache;
+
+        private IObfuscator _dynamicProxyObfuscator;
+        private IObfuscationPolicy _dynamicProxyPolicy;
+
+        public override ObfuscationPassType Type => ObfuscationPassType.CallObfus;
+
+        public CallObfusPass(CallObfuscationSettingsFacade settings)
+        {
+            _settings = settings;
+            CurrentSettings = settings;
+        }
+
+        public override void Stop()
+        {
+            _dynamicProxyObfuscator.Done();
+        }
+
+        public override void Start()
+        {
+            var ctx = ObfuscationPassContext.Current;
+
+            _specialWhiteListMethodCache = new SpecialWhiteListMethodCalculator(ctx.coreSettings.targetRuntime, _settings.obfuscateCallToMethodInMscorlib);
+            _dynamicProxyObfuscator = CreateObfuscator(ctx, _settings.proxyMode);
+            _dynamicProxyPolicy = new ConfigurableObfuscationPolicy(ctx.coreSettings.assembliesToObfuscate, _settings.ruleFiles);
+        }
+
+        private IObfuscator CreateObfuscator(ObfuscationPassContext ctx, ProxyMode mode)
+        {
+            switch (mode)
+            {
+                case ProxyMode.Dispatch:
+                return new DispatchProxyObfuscator(ctx.moduleEntityManager);
+                case ProxyMode.Delegate:
+                return new DelegateProxyObfuscator(ctx.moduleEntityManager);
+                default:
+                throw new System.NotSupportedException($"Unsupported proxy mode: {mode}");
+            }
+        }
+
+        protected override void ObfuscateData(MethodDef method)
+        {
+            BasicBlockCollection bbc = new BasicBlockCollection(method, false);
+
+            IList<Instruction> instructions = method.Body.Instructions;
+
+            var outputInstructions = new List<Instruction>();
+            var totalFinalInstructions = new List<Instruction>();
+
+            ObfuscationPassContext ctx = ObfuscationPassContext.Current;
+            var encryptionScope = ctx.moduleEntityManager.EncryptionScopeProvider.GetScope(method.Module);
+            var localRandom = encryptionScope.localRandomCreator(MethodEqualityComparer.CompareDeclaringTypes.GetHashCode(method));
+            var omc = new ObfusMethodContext
+            {
+                method = method,
+                localVariableAllocator = new LocalVariableAllocator(method),
+                localRandom = localRandom,
+                encryptionScope = encryptionScope,
+            };
+            Instruction lastInst = null;
+            for (int i = 0; i < instructions.Count; i++)
+            {
+                Instruction inst = instructions[i];
+                BasicBlock block = bbc.GetBasicBlockByInstruction(inst);
+                outputInstructions.Clear();
+                if (TryObfuscateInstruction(method, lastInst, inst, outputInstructions, omc))
+                {
+                    // current instruction may be the target of control flow instruction, so we can't remove it directly.
+                    // we replace it with nop now, then remove it in CleanUpInstructionPass
+                    inst.OpCode = outputInstructions[0].OpCode;
+                    inst.Operand = outputInstructions[0].Operand;
+                    totalFinalInstructions.Add(inst);
+                    for (int k = 1; k < outputInstructions.Count; k++)
+                    {
+                        totalFinalInstructions.Add(outputInstructions[k]);
+                    }
+                }
+                else
+                {
+                    totalFinalInstructions.Add(inst);
+                }
+                lastInst = inst;
+            }
+
+            instructions.Clear();
+            foreach (var obInst in totalFinalInstructions)
+            {
+                instructions.Add(obInst);
+            }
+        }
+
+        protected override bool NeedObfuscateMethod(MethodDef method)
+        {
+            return _dynamicProxyPolicy.NeedObfuscateCallInMethod(method);
+        }
+
+        private bool TryObfuscateInstruction(MethodDef callerMethod, Instruction lastInst, Instruction inst, List<Instruction> outputInstructions, ObfusMethodContext ctx)
+        {
+            IMethod calledMethod = inst.Operand as IMethod;
+            if (calledMethod == null || !calledMethod.IsMethod)
+            {
+                return false;
+            }
+            if (MetaUtil.ContainsContainsGenericParameter(calledMethod))
+            {
+                return false;
+            }
+
+            bool callVir;
+            switch (inst.OpCode.Code)
+            {
+                case Code.Call:
+                {
+                    callVir = false;
+                    break;
+                }
+                case Code.Callvirt:
+                {
+                    if (lastInst != null && lastInst.OpCode.Code == Code.Constrained)
+                    {
+                        return false;
+                    }
+                    callVir = true;
+                    break;
+                }
+                default: return false;
+            }
+
+
+            if (_specialWhiteListMethodCache.IsInWhiteList(calledMethod))
+            {
+                return false;
+            }
+
+
+            if (!_dynamicProxyPolicy.NeedObfuscateCalledMethod(callerMethod, calledMethod, callVir))
+            {
+                return false;
+            }
+
+            return _dynamicProxyObfuscator.Obfuscate(callerMethod, calledMethod, callVir, outputInstructions);
+        }
+    }
+}

Editor/ObfusPasses/CallObfus/ConfigurableObfuscationPolicy.cs

@@ -1,13 +1,10 @@
 using dnlib.DotNet;
 using Obfuz.Conf;
+using Obfuz.Settings;
 using Obfuz.Utils;
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using System.Xml;
-using UnityEngine;
 
 namespace Obfuz.ObfusPasses.CallObfus
 {
@@ -38,29 +35,12 @@ namespace Obfuz.ObfusPasses.CallObfus
 
         class ObfuscationRule : IRule<ObfuscationRule>
         {
-            public bool? disableObfuscation;
+            public ObfuscationLevel? obfuscationLevel;
-            public bool? obfuscateCallInLoop;
-            public bool? cacheCallIndexInLoop;
-            public bool? cacheCallIndexNotLoop;
 
             public void InheritParent(ObfuscationRule parentRule)
             {
-                if (disableObfuscation == null)
+                if (obfuscationLevel == null)
-                {
+                    obfuscationLevel = parentRule.obfuscationLevel;
-                    disableObfuscation = parentRule.disableObfuscation;
-                }
-                if (obfuscateCallInLoop == null)
-                {
-                    obfuscateCallInLoop = parentRule.obfuscateCallInLoop;
-                }
-                if (cacheCallIndexInLoop == null)
-                {
-                    cacheCallIndexInLoop = parentRule.cacheCallIndexInLoop;
-                }
-                if (cacheCallIndexNotLoop == null)
-                {
-                    cacheCallIndexNotLoop = parentRule.cacheCallIndexNotLoop;
-                }
             }
         }
 
@@ -79,10 +59,7 @@ namespace Obfuz.ObfusPasses.CallObfus
 
         private static readonly ObfuscationRule s_default = new ObfuscationRule()
         {
-            disableObfuscation = false,
+            obfuscationLevel = ObfuscationLevel.Basic,
-            obfuscateCallInLoop = true,
-            cacheCallIndexInLoop = true,
-            cacheCallIndexNotLoop = false,
         };
 
         private readonly XmlAssemblyTypeMethodRuleParser<AssemblySpec, TypeSpec, MethodSpec, ObfuscationRule> _configParser;
@@ -90,11 +67,12 @@ namespace Obfuz.ObfusPasses.CallObfus
         private ObfuscationRule _global;
         private readonly List<WhiteListAssembly> _whiteListAssemblies = new List<WhiteListAssembly>();
 
-        private readonly Dictionary<IMethod, bool> _whiteListMethodCache = new Dictionary<IMethod, bool>(MethodEqualityComparer.CompareDeclaringTypes);
+        private readonly CachedDictionary<IMethod, bool> _whiteListMethodCache;
         private readonly Dictionary<MethodDef, ObfuscationRule> _methodRuleCache = new Dictionary<MethodDef, ObfuscationRule>();
 
         public ConfigurableObfuscationPolicy(List<string> toObfuscatedAssemblyNames, List<string> xmlConfigFiles)
         {
+            _whiteListMethodCache = new CachedDictionary<IMethod, bool>(MethodEqualityComparer.CompareDeclaringTypes, this.ComputeIsInWhiteList);
             _configParser = new XmlAssemblyTypeMethodRuleParser<AssemblySpec, TypeSpec, MethodSpec, ObfuscationRule>(toObfuscatedAssemblyNames,
                 ParseObfuscationRule, ParseGlobalElement);
             LoadConfigs(xmlConfigFiles);
@@ -150,21 +128,9 @@ namespace Obfuz.ObfusPasses.CallObfus
         private ObfuscationRule ParseObfuscationRule(string configFile, XmlElement ele)
         {
             var rule = new ObfuscationRule();
-            if (ele.HasAttribute("disableObfuscation"))
+            if (ele.HasAttribute("obfuscationLevel"))
             {
-                rule.disableObfuscation = ConfigUtil.ParseBool(ele.GetAttribute("disableObfuscation"));
+                rule.obfuscationLevel = ConfigUtil.ParseObfuscationLevel(ele.GetAttribute("obfuscationLevel"));
-            }
-            if (ele.HasAttribute("obfuscateCallInLoop"))
-            {
-                rule.obfuscateCallInLoop = ConfigUtil.ParseBool(ele.GetAttribute("obfuscateCallInLoop"));
-            }
-            if (ele.HasAttribute("cacheCallIndexInLoop"))
-            {
-                rule.cacheCallIndexInLoop = ConfigUtil.ParseBool(ele.GetAttribute("cacheCallIndexInLoop"));
-            }
-            if (ele.HasAttribute("cacheCallIndexNotLoop"))
-            {
-                rule.cacheCallIndexNotLoop = ConfigUtil.ParseBool(ele.GetAttribute("cacheCallIndexNotLoop"));
             }
             return rule;
         }
@@ -256,7 +222,7 @@ namespace Obfuz.ObfusPasses.CallObfus
         {
             if (!_methodRuleCache.TryGetValue(method, out var rule))
             {
-                rule = _configParser.GetMethodRule(method, s_default);
+                rule = _configParser.GetMethodRule(method, _global);
                 _methodRuleCache[method] = rule;
             }
             return rule;
@@ -265,44 +231,7 @@ namespace Obfuz.ObfusPasses.CallObfus
         public override bool NeedObfuscateCallInMethod(MethodDef method)
         {
             ObfuscationRule rule = GetMethodObfuscationRule(method);
-            return rule.disableObfuscation != true;
+            return rule.obfuscationLevel != null && rule.obfuscationLevel.Value >= ObfuscationLevel.Basic;
-        }
-
-        public override ObfuscationCachePolicy GetMethodObfuscationCachePolicy(MethodDef method)
-        {
-            ObfuscationRule rule = GetMethodObfuscationRule(method);
-            return new ObfuscationCachePolicy()
-            {
-                cacheInLoop = rule.cacheCallIndexInLoop.Value,
-                cacheNotInLoop = rule.cacheCallIndexNotLoop.Value,
-            };
-        }
-
-
-        private bool IsSpecialNotObfuscatedMethod(TypeDef typeDef, IMethod method)
-        {
-            if (typeDef.IsDelegate || typeDef.IsEnum)
-                return true;
-
-            string methodName = method.Name;
-
-            // doesn't proxy call if the method is a constructor
-            if (methodName == ".ctor")
-            {
-                return true;
-            }
-
-            if (typeDef.Name == "EncryptionService`1")
-            {
-                return true;
-            }
-            // special handle
-            // don't proxy call for List<T>.Enumerator GetEnumerator()
-            if (methodName == "GetEnumerator")
-            {
-                return true;
-            }
-            return false;
         }
 
         private bool ComputeIsInWhiteList(IMethod calledMethod)
@@ -330,11 +259,6 @@ namespace Obfuz.ObfusPasses.CallObfus
 
             TypeDef typeDef = declaringType.ResolveTypeDef();
 
-            if (IsSpecialNotObfuscatedMethod(typeDef, calledMethod))
-            {
-                return true;
-            }
-
             string assName = typeDef.Module.Assembly.Name;
             string typeFullName = typeDef.FullName;
             string methodName = calledMethod.Name;
@@ -364,44 +288,9 @@ namespace Obfuz.ObfusPasses.CallObfus
             return false;
         }
 
-        private bool IsInWhiteList(IMethod method)
+        public override bool NeedObfuscateCalledMethod(MethodDef callerMethod, IMethod calledMethod, bool callVir)
         {
-            if (!_whiteListMethodCache.TryGetValue(method, out var isWhiteList))
+            if (_whiteListMethodCache.GetValue(calledMethod))
-            {
-                isWhiteList = ComputeIsInWhiteList(method);
-                _whiteListMethodCache.Add(method, isWhiteList);
-            }
-            return isWhiteList;
-        }
-
-        private bool IsTypeSelfAndParentPublic(TypeDef type)
-        {
-            if (type.DeclaringType != null && !IsTypeSelfAndParentPublic(type.DeclaringType))
-            {
-                return false;
-            }
-
-            return type.IsPublic;
-        }
-
-        public override bool NeedObfuscateCalledMethod(MethodDef callerMethod, IMethod calledMethod, bool callVir, bool currentInLoop)
-        {
-            if (IsInWhiteList(calledMethod))
-            {
-                return false;
-            }
-
-            // mono has more strict access control, calls non-public method will raise exception.
-            if (PlatformUtil.IsMonoBackend())
-            {
-                MethodDef calledMethodDef = calledMethod.ResolveMethodDef();
-                if (calledMethodDef != null && (!calledMethodDef.IsPublic || !IsTypeSelfAndParentPublic(calledMethodDef.DeclaringType)))
-                {
-                    return false;
-                }
-            }
-            ObfuscationRule rule = GetMethodObfuscationRule(callerMethod);
-            if (currentInLoop && rule.obfuscateCallInLoop == false)
             {
                 return false;
             }

Editor/ObfusPasses/CallObfus/DelegateProxyAllocator.cs

@@ -0,0 +1,265 @@
+using dnlib.DotNet;
+using dnlib.DotNet.Emit;
+using Obfuz.Data;
+using Obfuz.Emit;
+using Obfuz.Settings;
+using Obfuz.Utils;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Obfuz.ObfusPasses.CallObfus
+{
+
+    struct DelegateProxyMethodData
+    {
+        public readonly FieldDef delegateInstanceField;
+        public readonly MethodDef delegateInvokeMethod;
+
+        public DelegateProxyMethodData(FieldDef delegateInstanceField, MethodDef delegateInvokeMethod)
+        {
+            this.delegateInstanceField = delegateInstanceField;
+            this.delegateInvokeMethod = delegateInvokeMethod;
+        }
+    }
+
+    class DelegateProxyAllocator : GroupByModuleEntityBase
+    {
+        private readonly CachedDictionary<MethodSig, TypeDef> _delegateTypes;
+        private readonly HashSet<string> _allocatedDelegateNames = new HashSet<string>();
+
+        private TypeDef _delegateInstanceHolderType;
+        private bool _done;
+
+        class CallInfo
+        {
+            public string key1;
+            public int key2;
+            public IMethod method;
+            public bool callVir;
+
+            public int index;
+            public TypeDef delegateType;
+            public FieldDef delegateInstanceField;
+            public MethodDef delegateInvokeMethod;
+            public MethodDef proxyMethod;
+        }
+        private readonly Dictionary<MethodKey, CallInfo> _callMethods = new Dictionary<MethodKey, CallInfo>();
+        private CallObfuscationSettingsFacade _settings;
+
+        public DelegateProxyAllocator()
+        {
+            _delegateTypes = new CachedDictionary<MethodSig, TypeDef>(SignatureEqualityComparer.Instance, CreateDelegateForSignature);
+        }
+
+        public override void Init()
+        {
+            _delegateInstanceHolderType = CreateDelegateInstanceHolderTypeDef();
+            _settings = CallObfusPass.CurrentSettings;
+        }
+
+        private string AllocateDelegateTypeName(MethodSig delegateInvokeSig)
+        {
+            uint hashCode = (uint)SignatureEqualityComparer.Instance.GetHashCode(delegateInvokeSig);
+            string typeName = $"$Obfuz$Delegate_{hashCode}";
+            if (_allocatedDelegateNames.Add(typeName))
+            {
+                return typeName;
+            }
+            for (int i = 0; ; i++)
+            {
+                typeName = $"$Obfuz$Delegate_{hashCode}_{i}";
+                if (_allocatedDelegateNames.Add(typeName))
+                {
+                    return typeName;
+                }
+            }
+        }
+
+        private TypeDef CreateDelegateForSignature(MethodSig delegateInvokeSig)
+        {
+            ModuleDef mod = Module;
+            using (var scope = new DisableTypeDefFindCacheScope(mod))
+            {
+
+                string typeName = AllocateDelegateTypeName(delegateInvokeSig);
+                mod.Import(typeof(MulticastDelegate));
+
+                TypeDef delegateType = new TypeDefUser("", typeName, mod.CorLibTypes.GetTypeRef("System", "MulticastDelegate"));
+                delegateType.Attributes = TypeAttributes.Class | TypeAttributes.Sealed | TypeAttributes.Public;
+                mod.Types.Add(delegateType);
+
+                MethodDef ctor = new MethodDefUser(
+                    ".ctor",
+                    MethodSig.CreateInstance(mod.CorLibTypes.Void, mod.CorLibTypes.Object, mod.CorLibTypes.IntPtr),
+                    MethodImplAttributes.Runtime,
+                    MethodAttributes.RTSpecialName | MethodAttributes.SpecialName | MethodAttributes.HideBySig | MethodAttributes.Public
+                );
+                ctor.DeclaringType = delegateType;
+
+
+                MethodDef invokeMethod = new MethodDefUser(
+                    "Invoke",
+                    MethodSig.CreateInstance(delegateInvokeSig.RetType, delegateInvokeSig.Params.ToArray()),
+                    MethodImplAttributes.Runtime,
+                    MethodAttributes.HideBySig | MethodAttributes.Public | MethodAttributes.NewSlot | MethodAttributes.Virtual
+                );
+                invokeMethod.DeclaringType = delegateType;
+                return delegateType;
+            }
+        }
+
+        private TypeDef CreateDelegateInstanceHolderTypeDef()
+        {
+            ModuleDef mod = Module;
+            using (var scope = new DisableTypeDefFindCacheScope(mod))
+            {
+                string typeName = "$Obfuz$DelegateInstanceHolder";
+                TypeDef holderType = new TypeDefUser("", typeName, mod.CorLibTypes.Object.ToTypeDefOrRef());
+                holderType.Attributes = TypeAttributes.Class | TypeAttributes.Public;
+                mod.Types.Add(holderType);
+                return holderType;
+            }
+        }
+
+        private string AllocateFieldName(IMethod method, bool callVir)
+        {
+            uint hashCode = (uint)MethodEqualityComparer.CompareDeclaringTypes.GetHashCode(method);
+            string typeName = $"$Obfuz$Delegate$Field_{hashCode}_{callVir}";
+            if (_allocatedDelegateNames.Add(typeName))
+            {
+                return typeName;
+            }
+            for (int i = 0; ; i++)
+            {
+                typeName = $"$Obfuz$Delegate$Field_{hashCode}_{callVir}_{i}";
+                if (_allocatedDelegateNames.Add(typeName))
+                {
+                    return typeName;
+                }
+            }
+        }
+
+        private MethodDef CreateProxyMethod(string name, IMethod calledMethod, bool callVir, MethodSig delegateInvokeSig)
+        {
+            var proxyMethod = new MethodDefUser(name, delegateInvokeSig, MethodImplAttributes.Managed, MethodAttributes.Public | MethodAttributes.Static);
+            var body = new CilBody();
+            proxyMethod.Body = body;
+            var ins = body.Instructions;
+
+            foreach (Parameter param in proxyMethod.Parameters)
+            {
+                ins.Add(Instruction.Create(OpCodes.Ldarg, param));
+            }
+
+            ins.Add(Instruction.Create(callVir ? OpCodes.Callvirt : OpCodes.Call, calledMethod));
+            ins.Add(Instruction.Create(OpCodes.Ret));
+            return proxyMethod;
+        }
+
+        public DelegateProxyMethodData Allocate(IMethod method, bool callVir, MethodSig delegateInvokeSig)
+        {
+            var key = new MethodKey(method, callVir);
+            if (!_callMethods.TryGetValue(key, out var callInfo))
+            {
+                TypeDef delegateType = _delegateTypes.GetValue(delegateInvokeSig);
+                MethodDef delegateInvokeMethod = delegateType.FindMethod("Invoke");
+                string fieldName = AllocateFieldName(method, callVir);
+                FieldDef delegateInstanceField = new FieldDefUser(fieldName, new FieldSig(delegateType.ToTypeSig()), FieldAttributes.Public | FieldAttributes.Static | FieldAttributes.InitOnly);
+                string key1 = $"{method.FullName}_{callVir}";
+                callInfo = new CallInfo
+                {
+                    key1 = key1,
+                    key2 = HashUtil.ComputePrimitiveOrStringOrBytesHashCode(key1) * 33445566,
+                    method = method,
+                    callVir = callVir,
+                    delegateType = delegateType,
+                    delegateInstanceField = delegateInstanceField,
+                    delegateInvokeMethod = delegateInvokeMethod,
+                    proxyMethod = CreateProxyMethod($"{fieldName}$Proxy", method, callVir, delegateInvokeSig),
+                };
+                _callMethods.Add(key, callInfo);
+            }
+            return new DelegateProxyMethodData(callInfo.delegateInstanceField, callInfo.delegateInvokeMethod);
+        }
+
+        public override void Done()
+        {
+            if (_done)
+            {
+                throw new Exception("Already done");
+            }
+            _done = true;
+
+            ModuleDef mod = Module;
+
+            // for stable order, we sort methods by name
+            List<CallInfo> callMethodList = _callMethods.Values.ToList();
+            callMethodList.Sort((a, b) => a.key1.CompareTo(b.key1));
+
+            var cctor = new MethodDefUser(".cctor",
+                MethodSig.CreateStatic(mod.CorLibTypes.Void),
+                MethodImplAttributes.IL | MethodImplAttributes.Managed,
+                MethodAttributes.Static | MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName | MethodAttributes.Private);
+            cctor.DeclaringType = _delegateInstanceHolderType;
+            //_rvaTypeDef.Methods.Add(cctor);
+            var body = new CilBody();
+            cctor.Body = body;
+            var ins = body.Instructions;
+
+            // var arr = new array[];
+            // var d = new delegate;
+            // arr[index] = d;
+            int index = 0;
+            ins.Add(Instruction.CreateLdcI4(callMethodList.Count));
+            ins.Add(Instruction.Create(OpCodes.Newarr, mod.CorLibTypes.Object));
+            foreach (CallInfo ci in callMethodList)
+            {
+                ci.index = index;
+                _delegateInstanceHolderType.Methods.Add(ci.proxyMethod);
+                ins.Add(Instruction.Create(OpCodes.Dup));
+                ins.Add(Instruction.CreateLdcI4(index));
+                ins.Add(Instruction.Create(OpCodes.Ldnull));
+                ins.Add(Instruction.Create(OpCodes.Ldftn, ci.proxyMethod));
+                MethodDef ctor = ci.delegateType.FindMethod(".ctor");
+                UnityEngine.Assertions.Assert.IsNotNull(ctor, $"Delegate type {ci.delegateType.FullName} does not have a constructor.");
+                ins.Add(Instruction.Create(OpCodes.Newobj, ctor));
+                ins.Add(Instruction.Create(OpCodes.Stelem_Ref));
+                ++index;
+            }
+
+
+
+            List<CallInfo> callMethodList2 = callMethodList.ToList();
+            callMethodList2.Sort((a, b) => a.key2.CompareTo(b.key2));
+
+            EncryptionScopeInfo encryptionScope = EncryptionScope;
+            DefaultMetadataImporter importer = this.GetDefaultModuleMetadataImporter();
+            RvaDataAllocator rvaDataAllocator = this.GetEntity<RvaDataAllocator>();
+            foreach (CallInfo ci in callMethodList2)
+            {
+                _delegateInstanceHolderType.Fields.Add(ci.delegateInstanceField);
+
+
+                ins.Add(Instruction.Create(OpCodes.Dup));
+
+                IRandom localRandom = encryptionScope.localRandomCreator(HashUtil.ComputePrimitiveOrStringOrBytesHashCode(ci.key1));
+                int ops = EncryptionUtil.GenerateEncryptionOpCodes(localRandom, encryptionScope.encryptor, _settings.obfuscationLevel);
+                int salt = localRandom.NextInt();
+
+                int encryptedValue = encryptionScope.encryptor.Encrypt(ci.index, ops, salt);
+                RvaData rvaData = rvaDataAllocator.Allocate(encryptedValue);
+                ins.Add(Instruction.Create(OpCodes.Ldsfld, rvaData.field));
+                ins.Add(Instruction.CreateLdcI4(rvaData.offset));
+                ins.Add(Instruction.CreateLdcI4(ops));
+                ins.Add(Instruction.CreateLdcI4(salt));
+                ins.Add(Instruction.Create(OpCodes.Call, importer.DecryptFromRvaInt));
+                ins.Add(Instruction.Create(OpCodes.Ldelem_Ref));
+                ins.Add(Instruction.Create(OpCodes.Stsfld, ci.delegateInstanceField));
+            }
+
+            ins.Add(Instruction.Create(OpCodes.Pop));
+            ins.Add(Instruction.Create(OpCodes.Ret));
+        }
+    }
+}

Editor/ObfusPasses/CallObfus/DelegateProxyAllocator.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 02761bacbed8a8b489ae3e7f49f0f84a
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Editor/ObfusPasses/CallObfus/DelegateProxyObfuscator.cs

@@ -0,0 +1,81 @@
+using dnlib.DotNet;
+using dnlib.DotNet.Emit;
+using Obfuz.Emit;
+using Obfuz.Utils;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Obfuz.ObfusPasses.CallObfus
+{
+
+    public class DelegateProxyObfuscator : ObfuscatorBase
+    {
+        private readonly GroupByModuleEntityManager _entityManager;
+
+        public DelegateProxyObfuscator(GroupByModuleEntityManager moduleEntityManager)
+        {
+            _entityManager = moduleEntityManager;
+        }
+
+        public override void Done()
+        {
+            _entityManager.Done<DelegateProxyAllocator>();
+        }
+
+        private MethodSig CreateProxyMethodSig(ModuleDef module, IMethod method)
+        {
+            MethodSig methodSig = MetaUtil.ToSharedMethodSig(module.CorLibTypes, MetaUtil.GetInflatedMethodSig(method, null));
+            //MethodSig methodSig = MetaUtil.GetInflatedMethodSig(method).Clone();
+            //methodSig.Params
+            switch (MetaUtil.GetThisArgType(method))
+            {
+                case ThisArgType.Class:
+                {
+                    methodSig.Params.Insert(0, module.CorLibTypes.Object);
+                    break;
+                }
+                case ThisArgType.ValueType:
+                {
+                    methodSig.Params.Insert(0, module.CorLibTypes.IntPtr);
+                    break;
+                }
+            }
+            return MethodSig.CreateStatic(methodSig.RetType, methodSig.Params.ToArray());
+        }
+
+        public override bool Obfuscate(MethodDef callingMethod, IMethod calledMethod, bool callVir, List<Instruction> obfuscatedInstructions)
+        {
+            DelegateProxyAllocator allocator = _entityManager.GetEntity<DelegateProxyAllocator>(callingMethod.Module);
+            LocalVariableAllocator localVarAllocator = new LocalVariableAllocator(callingMethod);
+            MethodSig methodSig = CreateProxyMethodSig(callingMethod.Module, calledMethod);
+            DelegateProxyMethodData proxyData = allocator.Allocate(calledMethod, callVir, methodSig);
+            bool isVoidReturn = MetaUtil.IsVoidType(methodSig.RetType);
+
+            using (var varScope = localVarAllocator.CreateScope())
+            {
+                List<Local> localVars = new List<Local>();
+                if (!isVoidReturn)
+                {
+                    varScope.AllocateLocal(methodSig.RetType);
+                }
+                foreach (var p in methodSig.Params)
+                {
+                    localVars.Add(varScope.AllocateLocal(p));
+                }
+                // save args
+                for (int i = localVars.Count - 1; i >= 0; i--)
+                {
+                    obfuscatedInstructions.Add(Instruction.Create(OpCodes.Stloc, localVars[i]));
+                }
+                obfuscatedInstructions.Add(Instruction.Create(OpCodes.Ldsfld, proxyData.delegateInstanceField));
+                foreach (var local in localVars)
+                {
+                    obfuscatedInstructions.Add(Instruction.Create(OpCodes.Ldloc, local));
+                }
+                obfuscatedInstructions.Add(Instruction.Create(OpCodes.Callvirt, proxyData.delegateInvokeMethod));
+            }
+
+            return true;
+        }
+    }
+}

Editor/ObfusPasses/CallObfus/DelegateProxyObfuscator.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 1102cd9f03de27c4b9fde3d6a87277c7
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Editor/ObfusPasses/CallObfus/DispatchProxyAllocator.cs

@@ -2,17 +2,17 @@
 using dnlib.DotNet.Emit;
 using Obfuz.Editor;
 using Obfuz.Emit;
+using Obfuz.Settings;
 using Obfuz.Utils;
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using MethodImplAttributes = dnlib.DotNet.MethodImplAttributes;
 using TypeAttributes = dnlib.DotNet.TypeAttributes;
 
 namespace Obfuz.ObfusPasses.CallObfus
 {
+
     public struct ProxyCallMethodData
     {
         public readonly MethodDef proxyMethod;
@@ -31,38 +31,11 @@ namespace Obfuz.ObfusPasses.CallObfus
         }
     }
 
-    class ModuleCallProxyAllocator : IGroupByModuleEntity
+    class ModuleDispatchProxyAllocator : GroupByModuleEntityBase
     {
-        private ModuleDef _module;
-        private readonly EncryptionScopeProvider _encryptionScopeProvider;
-        private readonly int _encryptionLevel;
-
-        private EncryptionScopeInfo _encryptionScope;
         private bool _done;
+        private CallObfuscationSettingsFacade _settings;
 
-        class MethodKey : IEquatable<MethodKey>
-        {
-            public readonly IMethod _method;
-            public readonly bool _callVir;
-            private readonly int _hashCode;
-
-            public MethodKey(IMethod method, bool callVir)
-            {
-                _method = method;
-                _callVir = callVir;
-                _hashCode = HashUtil.CombineHash(MethodEqualityComparer.CompareDeclaringTypes.GetHashCode(method), callVir ? 1 : 0);
-            }
-
-            public override int GetHashCode()
-            {
-                return _hashCode;
-            }
-
-            public bool Equals(MethodKey other)
-            {
-                return MethodEqualityComparer.CompareDeclaringTypes.Equals(_method, other._method) && _callVir == other._callVir;
-            }
-        }
 
         class MethodProxyInfo
         {
@@ -76,11 +49,9 @@ namespace Obfuz.ObfusPasses.CallObfus
 
         private readonly Dictionary<MethodKey, MethodProxyInfo> _methodProxys = new Dictionary<MethodKey, MethodProxyInfo>();
 
-
-        const int maxProxyMethodPerDispatchMethod = 1000;
-
         class CallInfo
         {
+            public string id;
             public IMethod method;
             public bool callVir;
         }
@@ -96,35 +67,60 @@ namespace Obfuz.ObfusPasses.CallObfus
 
         private TypeDef _proxyTypeDef;
 
-        public ModuleCallProxyAllocator(EncryptionScopeProvider encryptionScopeProvider, int encryptionLevel)
+        public ModuleDispatchProxyAllocator()
         {
-            _encryptionScopeProvider = encryptionScopeProvider;
-            _encryptionLevel = encryptionLevel;
         }
 
-        public void Init(ModuleDef mod)
+        public override void Init()
         {
-            _module = mod;
+            _settings = CallObfusPass.CurrentSettings;
-            _encryptionScope = _encryptionScopeProvider.GetScope(mod);
         }
 
         private TypeDef CreateProxyTypeDef()
         {
-            var typeDef = new TypeDefUser($"{ConstValues.ObfuzInternalSymbolNamePrefix}ProxyCall", _module.CorLibTypes.Object.ToTypeDefOrRef());
+            ModuleDef mod = Module;
+            using (var scope = new DisableTypeDefFindCacheScope(mod))
+            {
+                var typeDef = new TypeDefUser($"{ConstValues.ObfuzInternalSymbolNamePrefix}ProxyCall", mod.CorLibTypes.Object.ToTypeDefOrRef());
                 typeDef.Attributes = TypeAttributes.NotPublic | TypeAttributes.Sealed;
-            _module.EnableTypeDefFindCache = false;
+                mod.Types.Add(typeDef);
-            _module.Types.Add(typeDef);
-            _module.EnableTypeDefFindCache = true;
                 return typeDef;
             }
+        }
 
-        private MethodDef CreateDispatchMethodInfo(MethodSig methodSig)
+        private readonly HashSet<string> _uniqueMethodNames = new HashSet<string>();
+
+
+        private string ToUniqueMethodName(string originalName)
+        {
+            if (_uniqueMethodNames.Add(originalName))
+            {
+                return originalName;
+            }
+            for (int index = 1; ; index++)
+            {
+                string uniqueName = $"{originalName}${index}";
+                if (_uniqueMethodNames.Add(uniqueName))
+                {
+                    return uniqueName;
+                }
+            }
+        }
+
+        private string CreateDispatchMethodName(MethodSig methodSig, int index)
+        {
+            // use a stable name for the dispatch method, so that we can reuse it across different modules
+            // this is important for cross-module calls
+            return ToUniqueMethodName($"{ConstValues.ObfuzInternalSymbolNamePrefix}Dispatch_{HashUtil.ComputeHash(methodSig.Params) & 0xFFFF}_{HashUtil.ComputeHash(methodSig.RetType) & 0xFFFFFF}");
+        }
+
+        private MethodDef CreateDispatchMethodInfo(MethodSig methodSig, int index)
         {
             if (_proxyTypeDef == null)
             {
                 _proxyTypeDef = CreateProxyTypeDef();
             }
-            MethodDef methodDef = new MethodDefUser($"{ConstValues.ObfuzInternalSymbolNamePrefix}ProxyCall$Dispatch${_proxyTypeDef.Methods.Count}", methodSig,
+            MethodDef methodDef = new MethodDefUser(CreateDispatchMethodName(methodSig, index), methodSig,
                 MethodImplAttributes.IL | MethodImplAttributes.Managed,
                 MethodAttributes.Static | MethodAttributes.Public);
             methodDef.DeclaringType = _proxyTypeDef;
@@ -133,24 +129,25 @@ namespace Obfuz.ObfusPasses.CallObfus
 
         private MethodSig CreateDispatchMethodSig(IMethod method)
         {
-            MethodSig methodSig = MetaUtil.ToSharedMethodSig(_module.CorLibTypes, MetaUtil.GetInflatedMethodSig(method));
+            ModuleDef mod = Module;
+            MethodSig methodSig = MetaUtil.ToSharedMethodSig(mod.CorLibTypes, MetaUtil.GetInflatedMethodSig(method, null));
             //MethodSig methodSig = MetaUtil.GetInflatedMethodSig(method).Clone();
             //methodSig.Params
             switch (MetaUtil.GetThisArgType(method))
             {
                 case ThisArgType.Class:
                 {
-                    methodSig.Params.Insert(0, _module.CorLibTypes.Object);
+                    methodSig.Params.Insert(0, mod.CorLibTypes.Object);
                     break;
                 }
                 case ThisArgType.ValueType:
                 {
-                    methodSig.Params.Insert(0, _module.CorLibTypes.IntPtr);
+                    methodSig.Params.Insert(0, mod.CorLibTypes.IntPtr);
                     break;
                 }
             }
             // extra param for index
-            methodSig.Params.Add(_module.CorLibTypes.Int32);
+            methodSig.Params.Add(mod.CorLibTypes.Int32);
             return MethodSig.CreateStatic(methodSig.RetType, methodSig.Params.ToArray());
         }
 
@@ -161,7 +158,7 @@ namespace Obfuz.ObfusPasses.CallObfus
 
         private int GenerateEncryptOps(IRandom random)
         {
-            return EncryptionUtil.GenerateEncryptionOpCodes(random, _encryptionScope.encryptor, _encryptionLevel);
+            return EncryptionUtil.GenerateEncryptionOpCodes(random, EncryptionScope.encryptor, _settings.obfuscationLevel);
         }
 
         private DispatchMethodInfo GetDispatchMethod(IMethod method)
@@ -172,11 +169,11 @@ namespace Obfuz.ObfusPasses.CallObfus
                 dispatchMethods = new List<DispatchMethodInfo>();
                 _dispatchMethods.Add(methodSig, dispatchMethods);
             }
-            if (dispatchMethods.Count == 0 || dispatchMethods.Last().methods.Count >= maxProxyMethodPerDispatchMethod)
+            if (dispatchMethods.Count == 0 || dispatchMethods.Last().methods.Count >= _settings.maxProxyMethodCountPerDispatchMethod)
             {
                 var newDispatchMethodInfo = new DispatchMethodInfo
                 {
-                    methodDef = CreateDispatchMethodInfo(methodSig),
+                    methodDef = CreateDispatchMethodInfo(methodSig, dispatchMethods.Count),
                 };
                 dispatchMethods.Add(newDispatchMethodInfo);
             }
@@ -186,7 +183,7 @@ namespace Obfuz.ObfusPasses.CallObfus
         private IRandom CreateRandomForMethod(IMethod method, bool callVir)
         {
             int seed = MethodEqualityComparer.CompareDeclaringTypes.GetHashCode(method);
-            return _encryptionScope.localRandomCreator(seed);
+            return EncryptionScope.localRandomCreator(seed);
         }
 
         public ProxyCallMethodData Allocate(IMethod method, bool callVir)
@@ -204,7 +201,7 @@ namespace Obfuz.ObfusPasses.CallObfus
                 IRandom localRandom = CreateRandomForMethod(method, callVir);
                 int encryptOps = GenerateEncryptOps(localRandom);
                 int salt = GenerateSalt(localRandom);
-                int encryptedIndex = _encryptionScope.encryptor.Encrypt(index, encryptOps, salt);
+                int encryptedIndex = EncryptionScope.encryptor.Encrypt(index, encryptOps, salt);
                 proxyInfo = new MethodProxyInfo()
                 {
                     proxyMethod = methodDispatcher.methodDef,
@@ -213,19 +210,32 @@ namespace Obfuz.ObfusPasses.CallObfus
                     salt = salt,
                     encryptedIndex = encryptedIndex,
                 };
-                methodDispatcher.methods.Add(new CallInfo { method = method, callVir = callVir});
+                methodDispatcher.methods.Add(new CallInfo { id = $"{method}{(callVir ? "" : "v")}", method = method, callVir = callVir });
                 _methodProxys.Add(key, proxyInfo);
             }
             return new ProxyCallMethodData(proxyInfo.proxyMethod, proxyInfo.encryptedOps, proxyInfo.salt, proxyInfo.encryptedIndex, proxyInfo.index);
         }
 
-        public void Done()
+        public override void Done()
         {
             if (_done)
             {
                 throw new Exception("Already done");
             }
             _done = true;
+            if (_proxyTypeDef == null)
+            {
+                return;
+            }
+
+            // for stable order, we sort methods by name
+            var methodWithNamePairList = _proxyTypeDef.Methods.Select(m => (m, m.ToString())).ToList();
+            methodWithNamePairList.Sort((a, b) => a.Item2.CompareTo(b.Item2));
+            _proxyTypeDef.Methods.Clear();
+            foreach (var methodPair in methodWithNamePairList)
+            {
+                methodPair.Item1.DeclaringType = _proxyTypeDef;
+            }
 
             foreach (DispatchMethodInfo dispatchMethod in _dispatchMethods.Values.SelectMany(ms => ms))
             {
@@ -246,6 +256,9 @@ namespace Obfuz.ObfusPasses.CallObfus
                 var switchInst = Instruction.Create(OpCodes.Switch, switchCases);
                 ins.Add(switchInst);
                 var ret = Instruction.Create(OpCodes.Ret);
+
+                // sort methods by signature to ensure stable order
+                //dispatchMethod.methods.Sort((a, b) => a.id.CompareTo(b.id));
                 foreach (CallInfo ci in dispatchMethod.methods)
                 {
                     var callTargetMethod = Instruction.Create(ci.callVir ? OpCodes.Callvirt : OpCodes.Call, ci.method);
@@ -257,37 +270,4 @@ namespace Obfuz.ObfusPasses.CallObfus
             }
         }
     }
-
-    public class CallProxyAllocator
-    {
-        private readonly EncryptionScopeProvider _encryptionScopeProvider;
-        private GroupByModuleEntityManager _moduleEntityManager;
-        private readonly int _encryptionLevel;
-
-        public CallProxyAllocator(EncryptionScopeProvider encryptionScopeProvider, GroupByModuleEntityManager moduleEntityManager, int encryptionLevel)
-        {
-            _encryptionScopeProvider = encryptionScopeProvider;
-            _moduleEntityManager = moduleEntityManager;
-            _encryptionLevel = encryptionLevel;
-        }
-
-        private ModuleCallProxyAllocator GetModuleAllocator(ModuleDef mod)
-        {
-            return _moduleEntityManager.GetEntity<ModuleCallProxyAllocator>(mod, () => new ModuleCallProxyAllocator(_encryptionScopeProvider, _encryptionLevel));
-        }
-
-        public ProxyCallMethodData Allocate(ModuleDef mod, IMethod method, bool callVir)
-        {
-            ModuleCallProxyAllocator allocator = GetModuleAllocator(mod);
-            return allocator.Allocate(method, callVir);
-        }
-
-        public void Done()
-        {
-            foreach (var allocator in _moduleEntityManager.GetEntities<ModuleCallProxyAllocator>())
-            {
-                allocator.Done();
-            }
-        }
-    }
 }