using System; using System.Runtime.CompilerServices; 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: 0x02001C9C RID: 7324 [Token(Token = "0x2001C9C")] public class RC2WrapEngine : IWrapper { // Token: 0x0600B819 RID: 47129 RVA: 0x0028DF78 File Offset: 0x0028C178 [Token(Token = "0x600B819")] [Address(RVA = "0x1DF0590", Offset = "0x1DEF390", VA = "0x181DF0590", Slot = "8")] public virtual void Init(bool forWrapping, ICipherParameters parameters) { for (;;) { this.forWrapping = forWrapping; CbcBlockCipher cbcBlockCipher = new CbcBlockCipher(new 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: 0x17001CDD RID: 7389 // (get) Token: 0x0600B81A RID: 47130 RVA: 0x0028E05C File Offset: 0x0028C25C [Token(Token = "0x17001CDD")] public virtual string AlgorithmName { [Token(Token = "0x600B81A")] [Address(RVA = "0x1DF1460", Offset = "0x1DF0260", VA = "0x181DF1460", Slot = "9")] get { return "RC2"; } } // Token: 0x0600B81B RID: 47131 RVA: 0x0028E070 File Offset: 0x0028C270 [Token(Token = "0x600B81B")] [Address(RVA = "0x1DF0ED0", Offset = "0x1DEFCD0", VA = "0x181DF0ED0", Slot = "10")] public virtual byte[] Wrap(byte[] input, int inOff, int length) { /* An exception occurred when decompiling this method (0600B81B) 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: 0x0600B81C RID: 47132 RVA: 0x0028E304 File Offset: 0x0028C504 [Token(Token = "0x600B81C")] [Address(RVA = "0x1DF0880", Offset = "0x1DEF680", VA = "0x181DF0880", Slot = "11")] public virtual byte[] Unwrap(byte[] input, int inOff, int length) { /* An exception occurred when decompiling this method (0600B81C) 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: 0x0600B81D RID: 47133 RVA: 0x0028E5BC File Offset: 0x0028C7BC [Token(Token = "0x600B81D")] [Address(RVA = "0x1DF0430", Offset = "0x1DEF230", VA = "0x181DF0430")] 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: 0x0600B81E RID: 47134 RVA: 0x0028E60C File Offset: 0x0028C80C [Token(Token = "0x600B81E")] [Address(RVA = "0x1DF0510", Offset = "0x1DEF310", VA = "0x181DF0510")] private bool CheckCmsKeyChecksum(byte[] key, byte[] checksum) { return Arrays.ConstantTimeAreEqual(this.CalculateCmsKeyChecksum(key), checksum); } // Token: 0x0600B81F RID: 47135 RVA: 0x0028E628 File Offset: 0x0028C828 [Token(Token = "0x600B81F")] [Address(RVA = "0x1DF13F0", Offset = "0x1DF01F0", VA = "0x181DF13F0")] public RC2WrapEngine() { Sha1Digest sha1Digest = new Sha1Digest(); this.sha1 = sha1Digest; byte[] array = new byte[20]; this.digest = array; base..ctor(); } // Token: 0x0600B820 RID: 47136 RVA: 0x0028E658 File Offset: 0x0028C858 // Note: this type is marked as 'beforefieldinit'. [Token(Token = "0x600B820")] [Address(RVA = "0x1DF1390", Offset = "0x1DF0190", VA = "0x181DF1390")] static RC2WrapEngine() { byte[] array = new byte[8]; RuntimeHelpers.InitializeArray(array, fieldof(.6DFD60679846B0E2064404E9EA3E1DDCE2C5709D).FieldHandle); RC2WrapEngine.IV2 = array; } // Token: 0x040074BC RID: 29884 [FieldOffset(Offset = "0x10")] [Token(Token = "0x40074BC")] private CbcBlockCipher engine; // Token: 0x040074BD RID: 29885 [FieldOffset(Offset = "0x18")] [Token(Token = "0x40074BD")] private ICipherParameters parameters; // Token: 0x040074BE RID: 29886 [FieldOffset(Offset = "0x20")] [Token(Token = "0x40074BE")] private ParametersWithIV paramPlusIV; // Token: 0x040074BF RID: 29887 [FieldOffset(Offset = "0x28")] [Token(Token = "0x40074BF")] private byte[] iv; // Token: 0x040074C0 RID: 29888 [FieldOffset(Offset = "0x30")] [Token(Token = "0x40074C0")] private bool forWrapping; // Token: 0x040074C1 RID: 29889 [FieldOffset(Offset = "0x38")] [Token(Token = "0x40074C1")] private SecureRandom sr; // Token: 0x040074C2 RID: 29890 [Token(Token = "0x40074C2")] private static readonly byte[] IV2; // Token: 0x040074C3 RID: 29891 [FieldOffset(Offset = "0x40")] [Token(Token = "0x40074C3")] private IDigest sha1; // Token: 0x040074C4 RID: 29892 [FieldOffset(Offset = "0x48")] [Token(Token = "0x40074C4")] private byte[] digest; } }