using System;
using System.Runtime.InteropServices;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
using Cpp2IlInjected;

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Engines
{
	// Token: 0x020016BA RID: 5818
	[Token(Token = "0x20016BA")]
	[StructLayout(3)]
	public class IesEngine
	{
		// Token: 0x06009C0A RID: 39946 RVA: 0x00235240 File Offset: 0x00233440
		[Token(Token = "0x6009C0A")]
		[Address(RVA = "0x2124FF0", Offset = "0x21239F0", VA = "0x182124FF0")]
		public IesEngine(IBasicAgreement agree, IDerivationFunction kdf, IMac mac)
		{
			this.agree = agree;
			this.kdf = kdf;
			this.mac = mac;
			byte[] array = new byte[0];
			this.macBuf = array;
		}

		// Token: 0x06009C0B RID: 39947 RVA: 0x0023527C File Offset: 0x0023347C
		[Token(Token = "0x6009C0B")]
		[Address(RVA = "0x2124F50", Offset = "0x2123950", VA = "0x182124F50")]
		public IesEngine(IBasicAgreement agree, IDerivationFunction kdf, IMac mac, BufferedBlockCipher cipher)
		{
			this.agree = agree;
			this.kdf = kdf;
			this.mac = mac;
			byte[] array = new byte[0];
			this.macBuf = array;
			this.cipher = 0;
		}

		// Token: 0x06009C0C RID: 39948 RVA: 0x002352C0 File Offset: 0x002334C0
		[Token(Token = "0x6009C0C")]
		[Address(RVA = "0x2124C80", Offset = "0x2123680", VA = "0x182124C80", Slot = "4")]
		public virtual void Init(bool forEncryption, ICipherParameters privParameters, ICipherParameters pubParameters, ICipherParameters iesParameters)
		{
			this.forEncryption = forEncryption;
			this.privParam = privParameters;
			this.pubParam = pubParameters;
			this.param = 0;
		}

		// Token: 0x06009C0D RID: 39949 RVA: 0x002352EC File Offset: 0x002334EC
		[Token(Token = "0x6009C0D")]
		[Address(RVA = "0x21241E0", Offset = "0x2122BE0", VA = "0x1821241E0")]
		private byte[] DecryptBlock(byte[] in_enc, int inOff, int inLen, byte[] z)
		{
			/*
An exception occurred when decompiling this method (06009C0D)

ICSharpCode.Decompiler.DecompilerException: Error decompiling System.Byte[] BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Engines.IesEngine::DecryptBlock(System.Byte[],System.Int32,System.Int32,System.Byte[])

 ---> System.Exception: Basic block has to end with unconditional control flow. 
{
	IL_130:
	stloc:InvalidCipherTextException(var_34_13A, newobj:InvalidCipherTextException(InvalidCipherTextException::.ctor, ldstr:string("Invalid MAC.")))
}

   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: 0x06009C0E RID: 39950 RVA: 0x00235434 File Offset: 0x00233634
		[Token(Token = "0x6009C0E")]
		[Address(RVA = "0x21246D0", Offset = "0x21230D0", VA = "0x1821246D0")]
		private byte[] EncryptBlock(byte[] input, int inOff, int inLen, byte[] z)
		{
			int num;
			int num2;
			for (;;)
			{
				byte[] derivation = this.param.derivation;
				IesParameters iesParameters = this.param;
				num = iesParameters.macKeySize;
				if (this.cipher == (ulong)0L)
				{
					goto IL_A2;
				}
				if (iesParameters != 0)
				{
					num2 = 0;
					if (iesParameters != 0)
					{
						break;
					}
				}
			}
			num += typeof(IesWithCipherParameters).TypeHandle;
			KdfParameters kdfParameters;
			byte[] array = this.GenerateKdfBytes(kdfParameters, num2);
			string algorithmName = this.cipher.AlgorithmName;
			int blockSize = this.cipher.GetBlockSize();
			byte[] array2 = new byte[inLen];
			BufferedBlockCipher bufferedBlockCipher = this.cipher;
			BufferedBlockCipher bufferedBlockCipher2 = this.cipher;
			IMac mac = this.mac;
			byte[] array3 = new byte[0];
			int num3 = 0;
			int num4 = 0;
			Array.Copy(array2, num4, array3, num3, inLen);
			IL_A2:
			IMac mac2 = this.mac;
			byte[] array4 = new byte[0];
			int num5 = 0;
			if (inLen != 0)
			{
				num5++;
				while (num5 != inLen)
				{
				}
			}
			byte[] array5;
			KeyParameter keyParameter = new KeyParameter(array5, inLen, num);
			IesParameters iesParameters2 = this.param;
			IMac mac3 = this.mac;
			byte[] encoding = iesParameters2.encoding;
			IMac mac4 = this.mac;
			IMac mac5 = this.mac;
			int length = encoding.Length;
			IMac mac6 = this.mac;
			return array4;
		}

		// Token: 0x06009C0F RID: 39951 RVA: 0x00235554 File Offset: 0x00233754
		[Token(Token = "0x6009C0F")]
		[Address(RVA = "0x2124B70", Offset = "0x2123570", VA = "0x182124B70")]
		private byte[] GenerateKdfBytes(KdfParameters kParam, int length)
		{
			byte[] array = new byte[length];
			IDerivationFunction derivationFunction = this.kdf;
			IDerivationFunction derivationFunction2 = this.kdf;
			int num = 0;
			int length2 = array.Length;
			if (num < derivationFunction)
			{
				num += num;
				num++;
			}
			return array;
		}

		// Token: 0x06009C10 RID: 39952 RVA: 0x00235598 File Offset: 0x00233798
		[Token(Token = "0x6009C10")]
		[Address(RVA = "0x2124D40", Offset = "0x2123740", VA = "0x182124D40", Slot = "5")]
		public virtual byte[] ProcessBlock(byte[] input, int inOff, int inLen)
		{
			int num;
			byte[] array3;
			do
			{
				num = 0;
				IBasicAgreement basicAgreement = this.agree;
				IBasicAgreement basicAgreement2 = this.agree;
				ICipherParameters cipherParameters = this.pubParam;
				if (num < basicAgreement)
				{
					num += num;
					num++;
				}
				IBasicAgreement basicAgreement3 = this.agree;
				byte[] array2;
				if (this.forEncryption)
				{
					byte[] array = this.EncryptBlock(input, inOff, inLen, array2);
				}
				array3 = this.DecryptBlock(input, inOff, inLen, array2);
				int length = array2.Length;
				int num2 = 0;
				Array.Clear(array2, num2, length);
				if (num != -1)
				{
				}
			}
			while (num != 0);
			return array3;
		}

		// Token: 0x0400665F RID: 26207
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x10")]
		[Token(Token = "0x400665F")]
		private readonly IBasicAgreement agree;

		// Token: 0x04006660 RID: 26208
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x18")]
		[Token(Token = "0x4006660")]
		private readonly IDerivationFunction kdf;

		// Token: 0x04006661 RID: 26209
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x20")]
		[Token(Token = "0x4006661")]
		private readonly IMac mac;

		// Token: 0x04006662 RID: 26210
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x4006662")]
		private readonly BufferedBlockCipher cipher;

		// Token: 0x04006663 RID: 26211
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x30")]
		[Token(Token = "0x4006663")]
		private readonly byte[] macBuf;

		// Token: 0x04006664 RID: 26212
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x38")]
		[Token(Token = "0x4006664")]
		private bool forEncryption;

		// Token: 0x04006665 RID: 26213
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x40")]
		[Token(Token = "0x4006665")]
		private ICipherParameters privParam;

		// Token: 0x04006666 RID: 26214
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x48")]
		[Token(Token = "0x4006666")]
		private ICipherParameters pubParam;

		// Token: 0x04006667 RID: 26215
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x50")]
		[Token(Token = "0x4006667")]
		private IesParameters param;
	}
}