using System; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Digests; using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Modes; using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters; using BestHTTP.SecureProtocol.Org.BouncyCastle.Security; using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities; using Cpp2IlInjected; namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Engines { // Token: 0x020016BF RID: 5823 [Token(Token = "0x20016BF")] [StructLayout(3)] public class RC2WrapEngine : IWrapper { // Token: 0x06009C3F RID: 39999 RVA: 0x002367F8 File Offset: 0x002349F8 [Token(Token = "0x6009C3F")] [Address(RVA = "0x212A440", Offset = "0x2128E40", VA = "0x18212A440", Slot = "8")] public virtual void Init(bool forWrapping, ICipherParameters parameters) { for (;;) { this.forWrapping = forWrapping; RC2Engine rc2Engine; rc2Engine.Reset(); CbcBlockCipher cbcBlockCipher = new CbcBlockCipher(rc2Engine); this.engine = cbcBlockCipher; if (parameters != 0 && parameters != 0) { int num = 0; if (parameters == 0) { continue; } this.sr = num; } SecureRandom secureRandom = new SecureRandom(); this.sr = secureRandom; if (parameters == 0 || parameters == 0) { break; } if (forWrapping && parameters != 0) { this.paramPlusIV = parameters; ParametersWithIV parametersWithIV = this.paramPlusIV; byte[] array; this.iv = array; ICipherParameters cipherParameters = parametersWithIV.parameters; if (array.Length == 8) { break; } } } this.parameters = parameters; if (this.forWrapping != parameters) { byte[] array2 = new byte[8]; SecureRandom secureRandom2 = this.sr; this.iv = array2; double num2 = secureRandom2.NextDouble(); ICipherParameters cipherParameters2 = this.parameters; byte[] array3 = this.iv; ParametersWithIV parametersWithIV2 = new ParametersWithIV(cipherParameters2, array3); this.paramPlusIV = parametersWithIV2; } } // Token: 0x170018DC RID: 6364 // (get) Token: 0x06009C40 RID: 40000 RVA: 0x002368E4 File Offset: 0x00234AE4 [Token(Token = "0x170018DC")] public virtual string AlgorithmName { [Token(Token = "0x6009C40")] [Address(RVA = "0x212B310", Offset = "0x2129D10", VA = "0x18212B310", Slot = "9")] get { return "RC2"; } } // Token: 0x06009C41 RID: 40001 RVA: 0x002368F8 File Offset: 0x00234AF8 [Token(Token = "0x6009C41")] [Address(RVA = "0x212AD80", Offset = "0x2129780", VA = "0x18212AD80", Slot = "10")] public virtual byte[] Wrap(byte[] input, int inOff, int length) { /* An exception occurred when decompiling this method (06009C41) ICSharpCode.Decompiler.DecompilerException: Error decompiling System.Byte[] BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Engines.RC2WrapEngine::Wrap(System.Byte[],System.Int32,System.Int32) ---> System.Exception: Basic block has to end with unconditional control flow. { IL_27B: stloc:InvalidOperationException(var_52_285, newobj:InvalidOperationException(InvalidOperationException::.ctor, ldstr:string("Not multiple of block length"))) } at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1852 at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.Optimize(DecompilerContext context, ILBlock method, AutoPropertyProvider autoPropertyProvider, StateMachineKind& stateMachineKind, MethodDef& inlinedMethod, AsyncMethodDebugInfo& asyncInfo, ILAstOptimizationStep abortBeforeStep) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 355 at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(IEnumerable`1 parameters, MethodDebugInfoBuilder& builder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 123 at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 88 --- End of inner exception stack trace --- at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 92 at ICSharpCode.Decompiler.Ast.AstBuilder.AddMethodBody(EntityDeclaration methodNode, EntityDeclaration& updatedNode, MethodDef method, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, MethodKind methodKind) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstBuilder.cs:line 1663 */; } // Token: 0x06009C42 RID: 40002 RVA: 0x00236B8C File Offset: 0x00234D8C [Token(Token = "0x6009C42")] [Address(RVA = "0x212A730", Offset = "0x2129130", VA = "0x18212A730", Slot = "11")] public virtual byte[] Unwrap(byte[] input, int inOff, int length) { /* An exception occurred when decompiling this method (06009C42) ICSharpCode.Decompiler.DecompilerException: Error decompiling System.Byte[] BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Engines.RC2WrapEngine::Unwrap(System.Byte[],System.Int32,System.Int32) ---> System.Exception: Basic block has to end with unconditional control flow. { IL_29E: stloc:InvalidOperationException(var_58_2A8, newobj:InvalidOperationException(InvalidOperationException::.ctor, ldstr:string("Not set for unwrapping"))) } at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1852 at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.Optimize(DecompilerContext context, ILBlock method, AutoPropertyProvider autoPropertyProvider, StateMachineKind& stateMachineKind, MethodDef& inlinedMethod, AsyncMethodDebugInfo& asyncInfo, ILAstOptimizationStep abortBeforeStep) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 355 at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(IEnumerable`1 parameters, MethodDebugInfoBuilder& builder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 123 at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 88 --- End of inner exception stack trace --- at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 92 at ICSharpCode.Decompiler.Ast.AstBuilder.AddMethodBody(EntityDeclaration methodNode, EntityDeclaration& updatedNode, MethodDef method, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, MethodKind methodKind) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstBuilder.cs:line 1663 */; } // Token: 0x06009C43 RID: 40003 RVA: 0x00236E44 File Offset: 0x00235044 [Token(Token = "0x6009C43")] [Address(RVA = "0x212A2E0", Offset = "0x2128CE0", VA = "0x18212A2E0")] private byte[] CalculateCmsKeyChecksum(byte[] key) { IDigest digest = this.sha1; int length = key.Length; IDigest digest2 = this.sha1; byte[] array = new byte[8]; byte[] array2 = this.digest; int num = 0; int num2 = 0; ulong num3; Array.Copy(array2, num2, array, num, (int)num3); return array; } // Token: 0x06009C44 RID: 40004 RVA: 0x00236E94 File Offset: 0x00235094 [Token(Token = "0x6009C44")] [Address(RVA = "0x212A3C0", Offset = "0x2128DC0", VA = "0x18212A3C0")] private bool CheckCmsKeyChecksum(byte[] key, byte[] checksum) { return Arrays.ConstantTimeAreEqual(this.CalculateCmsKeyChecksum(key), checksum); } // Token: 0x06009C45 RID: 40005 RVA: 0x00236EB0 File Offset: 0x002350B0 [Token(Token = "0x6009C45")] [Address(RVA = "0x212B2A0", Offset = "0x2129CA0", VA = "0x18212B2A0")] public RC2WrapEngine() { Sha1Digest sha1Digest = new Sha1Digest(); this.sha1 = sha1Digest; byte[] array = new byte[20]; this.digest = array; base..ctor(); } // Token: 0x06009C46 RID: 40006 RVA: 0x00236EE0 File Offset: 0x002350E0 // Note: this type is marked as 'beforefieldinit'. [Token(Token = "0x6009C46")] [Address(RVA = "0x212B240", Offset = "0x2129C40", VA = "0x18212B240")] static RC2WrapEngine() { byte[] array = new byte[8]; RuntimeHelpers.InitializeArray(array, fieldof(.6DFD60679846B0E2064404E9EA3E1DDCE2C5709D).FieldHandle); RC2WrapEngine.IV2 = array; } // Token: 0x04006679 RID: 26233 [global::Cpp2IlInjected.FieldOffset(Offset = "0x10")] [Token(Token = "0x4006679")] private CbcBlockCipher engine; // Token: 0x0400667A RID: 26234 [global::Cpp2IlInjected.FieldOffset(Offset = "0x18")] [Token(Token = "0x400667A")] private ICipherParameters parameters; // Token: 0x0400667B RID: 26235 [global::Cpp2IlInjected.FieldOffset(Offset = "0x20")] [Token(Token = "0x400667B")] private ParametersWithIV paramPlusIV; // Token: 0x0400667C RID: 26236 [global::Cpp2IlInjected.FieldOffset(Offset = "0x28")] [Token(Token = "0x400667C")] private byte[] iv; // Token: 0x0400667D RID: 26237 [global::Cpp2IlInjected.FieldOffset(Offset = "0x30")] [Token(Token = "0x400667D")] private bool forWrapping; // Token: 0x0400667E RID: 26238 [global::Cpp2IlInjected.FieldOffset(Offset = "0x38")] [Token(Token = "0x400667E")] private SecureRandom sr; // Token: 0x0400667F RID: 26239 [Token(Token = "0x400667F")] private static readonly byte[] IV2; // Token: 0x04006680 RID: 26240 [global::Cpp2IlInjected.FieldOffset(Offset = "0x40")] [Token(Token = "0x4006680")] private IDigest sha1; // Token: 0x04006681 RID: 26241 [global::Cpp2IlInjected.FieldOffset(Offset = "0x48")] [Token(Token = "0x4006681")] private byte[] digest; } }