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obfuz
mirror of https://github.com/focus-creative-games/obfuz
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新增局部种子生成器

backup
walon 2025-05-13 08:56:19 +08:00
parent b4a0414f25
commit 62cabf939c
7 changed files with 20 additions and 18 deletions
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3
Editor/EncryptionVM/VirtualMachineCreator.cs
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@ -17,7 +17,8 @@ namespace Obfuz.EncryptionVM
{
_vmGenerationSecretKey = vmGenerationSecretKey;
byte[] byteGenerationSecretKey = KeyGenerator.GenerateKey(vmGenerationSecretKey, CodeGenerationSecretKeyLength);
_random = new RandomWithKey(byteGenerationSecretKey, 0);
int[] intGenerationSecretKey = KeyGenerator.ConvertToIntKey(byteGenerationSecretKey);
_random = new RandomWithKey(intGenerationSecretKey, 0);
}
private IEncryptionInstruction CreateRandomInstruction(int intSecretKeyLength)

2
Editor/ObfusPasses/CallObfus/CallObfusPass.cs
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@ -38,7 +38,7 @@ namespace Obfuz.ObfusPasses.CallObfus
public override void Start()
{
var ctx = ObfuscationPassContext.Current;
_random = ctx.random;
_random = ctx.globalRandom;
_encryptor = ctx.encryptor;
_dynamicProxyObfuscator = new DefaultCallProxyObfuscator(_random, _encryptor, ctx.constFieldAllocator, ctx.moduleEntityManager, _obfuscationLevel);
_dynamicProxyPolicy = new ConfigurableObfuscationPolicy(ctx.toObfuscatedAssemblyNames, _configFiles);

2
Editor/ObfusPasses/ConstEncrypt/ConstEncryptPass.cs
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@ -31,7 +31,7 @@ namespace Obfuz.ObfusPasses.ConstEncrypt
{
var ctx = ObfuscationPassContext.Current;
_dataObfuscatorPolicy = new ConfigurableEncryptPolicy(ctx.toObfuscatedAssemblyNames, _configFiles);
_dataObfuscator = new DefaultConstEncryptor(ctx.random, ctx.encryptor, ctx.rvaDataAllocator, ctx.constFieldAllocator, ctx.moduleEntityManager, _encryptionLevel);
_dataObfuscator = new DefaultConstEncryptor(ctx.globalRandom, ctx.encryptor, ctx.rvaDataAllocator, ctx.constFieldAllocator, ctx.moduleEntityManager, _encryptionLevel);
}
public override void Stop()

2
Editor/ObfusPasses/FieldEncrypt/FieldEncryptPass.cs
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@ -30,7 +30,7 @@ namespace Obfuz.ObfusPasses.FieldEncrypt
public override void Start()
{
var ctx = ObfuscationPassContext.Current;
_memoryEncryptor = new DefaultFieldEncryptor(ctx.random, ctx.encryptor, ctx.moduleEntityManager, _encryptionLevel);
_memoryEncryptor = new DefaultFieldEncryptor(ctx.globalRandom, ctx.encryptor, ctx.moduleEntityManager, _encryptionLevel);
_encryptionPolicy = new ConfigurableEncryptPolicy(ctx.toObfuscatedAssemblyNames, _configFiles);
}

4
Editor/ObfuscationPassContext.cs
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@ -30,7 +30,9 @@ namespace Obfuz
public string obfuscatedAssemblyOutputDir;
public IRandom random;
public IRandom globalRandom;
public Func<int, IRandom> localScopeRandomCreator;
public IEncryptor encryptor;
public ConstFieldAllocator constFieldAllocator;
public RvaDataAllocator rvaDataAllocator;

21
Editor/Obfuscator.cs
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@ -31,7 +31,8 @@ namespace Obfuz
private readonly Pipeline _pipeline1 = new Pipeline();
private readonly Pipeline _pipeline2 = new Pipeline();
private readonly byte[] _secret;
private readonly byte[] _byteSecret;
private readonly int[] _intSecret;
private readonly int _randomSeed;
private readonly string _encryptionVmGenerationSecret;
private readonly int _encryptionVmOpCodeCount;
@ -41,8 +42,9 @@ namespace Obfuz
public Obfuscator(ObfuscatorBuilder builder)
{
_secret = KeyGenerator.GenerateKey(builder.Secret, VirtualMachine.SecretKeyLength);
SaveKey(_secret, builder.SecretOutputPath);
_byteSecret = KeyGenerator.GenerateKey(builder.Secret, VirtualMachine.SecretKeyLength);
_intSecret = KeyGenerator.ConvertToIntKey(_byteSecret);
SaveKey(_byteSecret, builder.SecretOutputPath);
_randomSeed = builder.RandomSeed;
_encryptionVmGenerationSecret = builder.EncryptionVmGenerationSecretKey;
_encryptionVmOpCodeCount = builder.EncryptionVmOpCodeCount;
@ -109,7 +111,7 @@ namespace Obfuz
{
throw new Exception($"EncryptionVm CodeFile:`{_encryptionVmCodeFile}` not match with encryptionVM settings! Please run `Obfuz/GenerateVm` to update it!");
}
var vms = new VirtualMachineSimulator(vm, _secret);
var vms = new VirtualMachineSimulator(vm, _byteSecret);
var generatedVmTypes = AppDomain.CurrentDomain.GetAssemblies()
.Select(assembly => assembly.GetType("Obfuz.EncryptionVM.GeneratedEncryptionVirtualMachine"))
@ -124,7 +126,7 @@ namespace Obfuz
throw new Exception($"class Obfuz.EncryptionVM.GeneratedEncryptionVirtualMachine found in multiple assemblies! Please retain only one!");
}
var gvmInstance = (IEncryptor)Activator.CreateInstance(generatedVmTypes[0], new object[] { _secret } );
var gvmInstance = (IEncryptor)Activator.CreateInstance(generatedVmTypes[0], new object[] { _byteSecret } );
int testValue = 11223344;
for (int i = 0; i < vm.opCodes.Length; i++)
@ -152,16 +154,12 @@ namespace Obfuz
private void OnPreObfuscation(Pipeline pipeline)
{
AssemblyCache assemblyCache = new AssemblyCache(new PathAssemblyResolver(_assemblySearchDirs.ToArray()));
List<ModuleDef> toObfuscatedModules = new List<ModuleDef>();
List<ModuleDef> obfuscatedAndNotObfuscatedModules = new List<ModuleDef>();
LoadAssemblies(assemblyCache, toObfuscatedModules, obfuscatedAndNotObfuscatedModules);
var random = new RandomWithKey(_secret, _randomSeed);
var random = new RandomWithKey(_intSecret, _randomSeed);
var encryptor = CreateEncryptionVirtualMachine();
var moduleEntityManager = new GroupByModuleEntityManager();
var rvaDataAllocator = new RvaDataAllocator(random, encryptor, moduleEntityManager);
@ -176,7 +174,8 @@ namespace Obfuz
obfuscatedAssemblyOutputDir = _obfuscatedAssemblyOutputDir,
moduleEntityManager = moduleEntityManager,
random = random,
globalRandom = random,
localScopeRandomCreator = (seed) => new RandomWithKey(_intSecret, _randomSeed ^ seed),
encryptor = encryptor,
rvaDataAllocator = rvaDataAllocator,
constFieldAllocator = constFieldAllocator,

4
Editor/Utils/RandomWithKey.cs
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@ -19,9 +19,9 @@ namespace Obfuz.Utils
private int _seed;
public RandomWithKey(byte[] key, int seed)
public RandomWithKey(int[] key, int seed)
{
_key = KeyGenerator.ConvertToIntKey(key);
_key = key;
_seed = seed;
}