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using System;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
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using Cpp2IlInjected;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Engines
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{
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// Token: 0x02001C97 RID: 7319
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[Token(Token = "0x2001C97")]
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public class IesEngine
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{
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// Token: 0x0600B7E4 RID: 47076 RVA: 0x0028C8F4 File Offset: 0x0028AAF4
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[Token(Token = "0x600B7E4")]
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[Address(RVA = "0x1DD2870", Offset = "0x1DD1670", VA = "0x181DD2870")]
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public IesEngine(IBasicAgreement agree, IDerivationFunction kdf, IMac mac)
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{
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this.agree = agree;
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this.kdf = kdf;
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this.mac = mac;
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byte[] array = new byte[0];
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this.macBuf = array;
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}
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// Token: 0x0600B7E5 RID: 47077 RVA: 0x0028C930 File Offset: 0x0028AB30
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[Token(Token = "0x600B7E5")]
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[Address(RVA = "0x1DD27D0", Offset = "0x1DD15D0", VA = "0x181DD27D0")]
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public IesEngine(IBasicAgreement agree, IDerivationFunction kdf, IMac mac, BufferedBlockCipher cipher)
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{
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this.agree = agree;
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this.kdf = kdf;
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this.mac = mac;
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byte[] array = new byte[0];
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this.macBuf = array;
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this.cipher = 0;
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}
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// Token: 0x0600B7E6 RID: 47078 RVA: 0x0028C974 File Offset: 0x0028AB74
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[Token(Token = "0x600B7E6")]
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[Address(RVA = "0x1DD2520", Offset = "0x1DD1320", VA = "0x181DD2520", Slot = "4")]
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public virtual void Init(bool forEncryption, ICipherParameters privParameters, ICipherParameters pubParameters, ICipherParameters iesParameters)
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{
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this.forEncryption = forEncryption;
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this.privParam = privParameters;
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this.pubParam = pubParameters;
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this.param = 0;
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}
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// Token: 0x0600B7E7 RID: 47079 RVA: 0x0028C9A0 File Offset: 0x0028ABA0
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[Token(Token = "0x600B7E7")]
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[Address(RVA = "0x1DD1A80", Offset = "0x1DD0880", VA = "0x181DD1A80")]
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private byte[] DecryptBlock(byte[] in_enc, int inOff, int inLen, byte[] z)
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{
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/*
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An exception occurred when decompiling this method (0600B7E7)
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ICSharpCode.Decompiler.DecompilerException: Error decompiling System.Byte[] BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Engines.IesEngine::DecryptBlock(System.Byte[],System.Int32,System.Int32,System.Byte[])
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---> System.Exception: Basic block has to end with unconditional control flow.
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{
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IL_130:
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stloc:InvalidCipherTextException(var_34_13A, newobj:InvalidCipherTextException(InvalidCipherTextException::.ctor, ldstr:string("Invalid MAC.")))
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}
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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
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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
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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
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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
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--- End of inner exception stack trace ---
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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
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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
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*/;
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}
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// Token: 0x0600B7E8 RID: 47080 RVA: 0x0028CAE8 File Offset: 0x0028ACE8
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[Token(Token = "0x600B7E8")]
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[Address(RVA = "0x1DD1F70", Offset = "0x1DD0D70", VA = "0x181DD1F70")]
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private byte[] EncryptBlock(byte[] input, int inOff, int inLen, byte[] z)
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{
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int num;
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int num2;
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for (;;)
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{
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byte[] derivation = this.param.derivation;
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IesParameters iesParameters = this.param;
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num = iesParameters.macKeySize;
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if (this.cipher == (ulong)0L)
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{
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goto IL_A2;
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}
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if (iesParameters != 0)
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{
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num2 = 0;
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if (iesParameters != 0)
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{
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break;
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}
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}
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}
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num += typeof(IesWithCipherParameters).TypeHandle;
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KdfParameters kdfParameters;
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byte[] array = this.GenerateKdfBytes(kdfParameters, num2);
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string algorithmName = this.cipher.AlgorithmName;
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int blockSize = this.cipher.GetBlockSize();
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byte[] array2 = new byte[inLen];
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BufferedBlockCipher bufferedBlockCipher = this.cipher;
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BufferedBlockCipher bufferedBlockCipher2 = this.cipher;
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IMac mac = this.mac;
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byte[] array3 = new byte[0];
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int num3 = 0;
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int num4 = 0;
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Array.Copy(array2, num4, array3, num3, inLen);
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IL_A2:
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IMac mac2 = this.mac;
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byte[] array4 = new byte[0];
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int num5 = 0;
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if (inLen != 0)
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{
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num5++;
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while (num5 != inLen)
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{
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}
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}
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byte[] array5;
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KeyParameter keyParameter = new KeyParameter(array5, inLen, num);
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IesParameters iesParameters2 = this.param;
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IMac mac3 = this.mac;
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byte[] encoding = iesParameters2.encoding;
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IMac mac4 = this.mac;
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IMac mac5 = this.mac;
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int length = encoding.Length;
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IMac mac6 = this.mac;
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return array4;
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}
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// Token: 0x0600B7E9 RID: 47081 RVA: 0x0028CC08 File Offset: 0x0028AE08
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[Token(Token = "0x600B7E9")]
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[Address(RVA = "0x1DD2410", Offset = "0x1DD1210", VA = "0x181DD2410")]
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private byte[] GenerateKdfBytes(KdfParameters kParam, int length)
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{
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byte[] array = new byte[length];
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IDerivationFunction derivationFunction = this.kdf;
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IDerivationFunction derivationFunction2 = this.kdf;
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int num = 0;
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int length2 = array.Length;
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if (num < derivationFunction)
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{
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num += num;
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num++;
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}
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return array;
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}
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// Token: 0x0600B7EA RID: 47082 RVA: 0x0028CC4C File Offset: 0x0028AE4C
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[Token(Token = "0x600B7EA")]
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[Address(RVA = "0x1DD25E0", Offset = "0x1DD13E0", VA = "0x181DD25E0", Slot = "5")]
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public virtual byte[] ProcessBlock(byte[] input, int inOff, int inLen)
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{
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int num;
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byte[] array3;
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do
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{
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num = 0;
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IBasicAgreement basicAgreement = this.agree;
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IBasicAgreement basicAgreement2 = this.agree;
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ICipherParameters cipherParameters = this.pubParam;
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if (num < basicAgreement)
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{
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num += num;
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num++;
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}
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IBasicAgreement basicAgreement3 = this.agree;
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byte[] array2;
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if (this.forEncryption)
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{
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byte[] array = this.EncryptBlock(input, inOff, inLen, array2);
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}
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array3 = this.DecryptBlock(input, inOff, inLen, array2);
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int length = array2.Length;
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int num2 = 0;
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Array.Clear(array2, num2, length);
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}
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while (num != 0);
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return array3;
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}
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// Token: 0x040074A2 RID: 29858
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[FieldOffset(Offset = "0x10")]
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[Token(Token = "0x40074A2")]
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private readonly IBasicAgreement agree;
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// Token: 0x040074A3 RID: 29859
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[FieldOffset(Offset = "0x18")]
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[Token(Token = "0x40074A3")]
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private readonly IDerivationFunction kdf;
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// Token: 0x040074A4 RID: 29860
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[FieldOffset(Offset = "0x20")]
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[Token(Token = "0x40074A4")]
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private readonly IMac mac;
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// Token: 0x040074A5 RID: 29861
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[FieldOffset(Offset = "0x28")]
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[Token(Token = "0x40074A5")]
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private readonly BufferedBlockCipher cipher;
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// Token: 0x040074A6 RID: 29862
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[FieldOffset(Offset = "0x30")]
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[Token(Token = "0x40074A6")]
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private readonly byte[] macBuf;
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// Token: 0x040074A7 RID: 29863
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[FieldOffset(Offset = "0x38")]
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[Token(Token = "0x40074A7")]
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private bool forEncryption;
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// Token: 0x040074A8 RID: 29864
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[FieldOffset(Offset = "0x40")]
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[Token(Token = "0x40074A8")]
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private ICipherParameters privParam;
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// Token: 0x040074A9 RID: 29865
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[FieldOffset(Offset = "0x48")]
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[Token(Token = "0x40074A9")]
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private ICipherParameters pubParam;
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// Token: 0x040074AA RID: 29866
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[FieldOffset(Offset = "0x50")]
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[Token(Token = "0x40074AA")]
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private IesParameters param;
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}
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}
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