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

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Macs
{
	// Token: 0x02001673 RID: 5747
	[Token(Token = "0x2001673")]
	[StructLayout(3)]
	public class Gost28147Mac : IMac
	{
		// Token: 0x0600998A RID: 39306 RVA: 0x002227E4 File Offset: 0x002209E4
		[Token(Token = "0x600998A")]
		[Address(RVA = "0x20F07B0", Offset = "0x20EF1B0", VA = "0x1820F07B0")]
		public Gost28147Mac()
		{
			byte[] array = new byte[128];
			RuntimeHelpers.InitializeArray(array, fieldof(<PrivateImplementationDetails>.2BA9E4B370D477F8C7FE286262D7ADC69CAF290E).FieldHandle);
			this.S = array;
			base..ctor();
			byte[] array2 = new byte[8];
			this.mac = array2;
			byte[] array3 = new byte[8];
			this.buf = array3;
			this.bufOff = (int)((ulong)0L);
		}

		// Token: 0x0600998B RID: 39307 RVA: 0x00222840 File Offset: 0x00220A40
		[Token(Token = "0x600998B")]
		[Address(RVA = "0x20F0160", Offset = "0x20EEB60", VA = "0x1820F0160")]
		private static int[] GenerateWorkingKey(byte[] userKey)
		{
			/*
An exception occurred when decompiling this method (0600998B)

ICSharpCode.Decompiler.DecompilerException: Error decompiling System.Int32[] BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Macs.Gost28147Mac::GenerateWorkingKey(System.Byte[])

 ---> System.Exception: Basic block has to end with unconditional control flow. 
{
	IL_33:
	stloc:ArgumentException(var_3_3D, newobj:ArgumentException(ArgumentException::.ctor, ldstr:string("Key length invalid. Key needs to be 32 byte - 256 bit!!!")))
}

   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.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1878
   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1878
   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1846
   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: 0x0600998C RID: 39308 RVA: 0x0022288C File Offset: 0x00220A8C
		[Token(Token = "0x600998C")]
		[Address(RVA = "0x20F0240", Offset = "0x20EEC40", VA = "0x1820F0240", Slot = "4")]
		public void Init(ICipherParameters parameters)
		{
			for (;;)
			{
				byte[] array = this.buf;
				int length = array.Length;
				int num = 0;
				Array.Clear(array, num, length);
				int num2 = 0;
				this.bufOff = num2;
				byte[] array2 = new byte[0];
				this.buf = array2;
				this.macIV = num2;
				if (parameters != 0)
				{
					if ("{il2cpp array field local7->}" == typeof(ParametersWithSBox).TypeHandle)
					{
					}
					int num3;
					if (parameters == 0)
					{
						if (parameters == 0)
						{
							if (parameters != 0 && parameters != 0)
							{
								break;
							}
							continue;
						}
						else
						{
							if (parameters == 0)
							{
								continue;
							}
							num3 = 0;
							if (parameters == 0)
							{
								continue;
							}
						}
					}
					if (parameters != 0)
					{
						while (num3 == 0)
						{
						}
						if (num3 != 0 && num3 != 0)
						{
							goto Block_8;
						}
					}
				}
			}
			byte[] array4;
			int[] array3 = Gost28147Mac.GenerateWorkingKey(array4);
			this.workingKey = array3;
			byte[] array5 = this.mac;
			int length2 = array5.Length;
			int num4 = 0;
			int num5 = 0;
			byte[] array6;
			Array.Copy(array6, num5, array5, num4, length2);
			byte[] array7;
			this.macIV = array7;
			return;
			Block_8:
			byte[] array9;
			int[] array8 = Gost28147Mac.GenerateWorkingKey(array9);
			throw new NullReferenceException();
		}

		// Token: 0x17001890 RID: 6288
		// (get) Token: 0x0600998D RID: 39309 RVA: 0x00222990 File Offset: 0x00220B90
		[Token(Token = "0x17001890")]
		public string AlgorithmName
		{
			[Token(Token = "0x600998D")]
			[Address(RVA = "0x20F0910", Offset = "0x20EF310", VA = "0x1820F0910", Slot = "5")]
			get
			{
				return "Gost28147Mac";
			}
		}

		// Token: 0x0600998E RID: 39310 RVA: 0x002229A4 File Offset: 0x00220BA4
		[Token(Token = "0x600998E")]
		[Address(RVA = "0x600D80", Offset = "0x5FF780", VA = "0x180600D80", Slot = "6")]
		public int GetMacSize()
		{
			return 4;
		}

		// Token: 0x0600998F RID: 39311 RVA: 0x002229B4 File Offset: 0x00220BB4
		[Token(Token = "0x600998F")]
		[Address(RVA = "0x20F0B50", Offset = "0x20EF550", VA = "0x1820F0B50")]
		private int gost28147_mainStep(int n1, int key)
		{
			int length = this.S.Length;
			byte b;
			byte b2;
			b += b2;
			b += b2;
			b += b2;
			b += b2;
			b += b2;
			b += b2;
			b += b2;
			b2 = b;
			throw new NullReferenceException();
		}

		// Token: 0x06009990 RID: 39312 RVA: 0x002229F0 File Offset: 0x00220BF0
		[Token(Token = "0x6009990")]
		[Address(RVA = "0x20F0940", Offset = "0x20EF340", VA = "0x1820F0940")]
		private void gost28147MacFunc(int[] workingKey, byte[] input, int inOff, byte[] output, int outOff)
		{
			int num = 0;
			int num2 = 0;
			int num3 = workingKey[num2];
			int num4 = this.gost28147_mainStep(inOff, num3);
			num2++;
			num++;
		}

		// Token: 0x06009991 RID: 39313 RVA: 0x00222A20 File Offset: 0x00220C20
		[Token(Token = "0x6009991")]
		[Address(RVA = "0x20F0850", Offset = "0x20EF250", VA = "0x1820F0850")]
		private static int bytesToint(byte[] input, int inOff)
		{
			int length = input.Length;
			byte b = input[input];
			byte b2 = input[input];
			int num = inOff + 1;
			b += b2;
			b += b2;
			byte b3;
			b += b3;
			throw new NullReferenceException();
		}

		// Token: 0x06009992 RID: 39314 RVA: 0x00222A5C File Offset: 0x00220C5C
		[Token(Token = "0x6009992")]
		[Address(RVA = "0x20F0D90", Offset = "0x20EF790", VA = "0x1820F0D90")]
		private static void intTobytes(int num, byte[] output, int outOff)
		{
			int num2 = outOff + 1;
		}

		// Token: 0x06009993 RID: 39315 RVA: 0x00222A74 File Offset: 0x00220C74
		[Token(Token = "0x6009993")]
		[Address(RVA = "0x20EFEE0", Offset = "0x20EE8E0", VA = "0x1820EFEE0")]
		private static byte[] CM5func(byte[] buf, int bufOff, byte[] mac)
		{
			int num = buf.Length;
			num -= bufOff;
			byte[] array = new byte[num];
			int length = mac.Length;
			int num2 = 0;
			int num3 = 0;
			Array.Copy(buf, bufOff, array, num3, length);
			int length2 = mac.Length;
			if (num2 != length2)
			{
				num2++;
			}
			return array;
		}

		// Token: 0x06009994 RID: 39316 RVA: 0x00222AC4 File Offset: 0x00220CC4
		[Token(Token = "0x6009994")]
		[Address(RVA = "0x20F0680", Offset = "0x20EF080", VA = "0x1820F0680", Slot = "7")]
		public void Update(byte input)
		{
			byte[] array = this.buf;
			int num = this.bufOff;
			int length = array.Length;
			if (num == length)
			{
				byte[] array2 = new byte[length];
				int length2 = this.mac.Length;
				int num2 = 0;
				int num3 = 0;
				byte[] array3 = this.buf;
				int num4 = 0;
				Array.Copy(array3, num4, array2, num3, length2);
				if ((this.firstStep ? 1 : 0) == num2)
				{
				}
				byte[] array4 = this.macIV;
				this.firstStep = num2 != 0;
				byte[] array6;
				if (array4 != 0)
				{
					byte[] array5 = this.buf;
					int num5 = 0;
					array6 = Gost28147Mac.CM5func(array5, num5, array4);
				}
				byte[] array7 = this.mac;
				int num6 = 0;
				int[] array8 = this.workingKey;
				this.gost28147MacFunc(array8, array6, num6, array7, num2);
			}
			int num7 = num + 1;
			this.bufOff = num7;
		}

		// Token: 0x06009995 RID: 39317 RVA: 0x00222B90 File Offset: 0x00220D90
		[Token(Token = "0x6009995")]
		[Address(RVA = "0x20EFCF0", Offset = "0x20EE6F0", VA = "0x1820EFCF0", Slot = "8")]
		public void BlockUpdate(byte[] input, int inOff, int len)
		{
			int num = this.bufOff;
			uint num2;
			num2 -= (uint)num;
			int num3 = 0;
			if (len > (int)num2)
			{
				byte[] array = this.buf;
				Array.Copy(input, inOff, array, num, (int)num2);
				byte[] array2 = new byte[this.buf.Length];
				int length = this.mac.Length;
				int num4 = 0;
				int num5 = 0;
				Array.Copy(this.buf, num5, array2, num4, length);
				if ((this.firstStep ? 1 : 0) == num3)
				{
				}
				byte[] array3 = this.macIV;
				this.firstStep = num3 != 0;
				byte[] array5;
				if (array3 != 0)
				{
					byte[] array4 = this.buf;
					int num6 = 0;
					array5 = Gost28147Mac.CM5func(array4, num6, array3);
				}
				byte[] array6 = this.mac;
				int num7 = 0;
				int[] array7 = this.workingKey;
				this.gost28147MacFunc(array7, array5, num7, array6, num3);
				this.bufOff = num3;
				if (len > 8)
				{
					byte[] array8 = this.mac;
					byte[] array9 = Gost28147Mac.CM5func(input, inOff, array8);
					byte[] array10 = this.mac;
					int num8 = 0;
					int[] array11 = this.workingKey;
					this.gost28147MacFunc(array11, array9, num8, array10, num3);
					while (len != 8)
					{
					}
				}
			}
			byte[] array12 = this.buf;
			Array.Copy(input, inOff, array12, num, len);
		}

		// Token: 0x06009996 RID: 39318 RVA: 0x00222CB4 File Offset: 0x00220EB4
		[Token(Token = "0x6009996")]
		[Address(RVA = "0x20EFFD0", Offset = "0x20EE9D0", VA = "0x1820EFFD0", Slot = "9")]
		public int DoFinal(byte[] output, int outOff)
		{
			int num = this.bufOff;
			if (num < 8)
			{
				byte[] array = this.buf;
				int num2 = num + 1;
				this.bufOff = num2;
				int num3 = this.bufOff;
			}
			byte[] array2 = new byte[this.buf.Length];
			int length = this.mac.Length;
			int num4 = 0;
			int num5 = 0;
			byte[] array3 = this.buf;
			int num6 = 0;
			Array.Copy(array3, num6, array2, num5, length);
			byte[] array6;
			if ((this.firstStep ? 1 : 0) == num4)
			{
				byte[] array4 = this.mac;
				byte[] array5 = this.buf;
				int num7 = 0;
				array6 = Gost28147Mac.CM5func(array5, num7, array4);
			}
			this.firstStep = num4 != 0;
			byte[] array7 = this.mac;
			int num8 = 0;
			int[] array8 = this.workingKey;
			this.gost28147MacFunc(array8, array6, num8, array7, num4);
			byte[] array9 = this.mac;
			int num9 = array9.Length;
			num9 -= array8;
			ulong num10;
			Array.Copy(array9, array8, output, outOff, (int)num10);
			byte[] array10 = this.buf;
			int length2 = array10.Length;
			int num11 = 0;
			Array.Clear(array10, num11, length2);
			this.bufOff = num4;
			this.firstStep = true;
			throw new NullReferenceException();
		}

		// Token: 0x06009997 RID: 39319 RVA: 0x00222DD4 File Offset: 0x00220FD4
		[Token(Token = "0x6009997")]
		[Address(RVA = "0x20F0640", Offset = "0x20EF040", VA = "0x1820F0640", Slot = "10")]
		public void Reset()
		{
			byte[] array = this.buf;
			int length = array.Length;
			int num = 0;
			Array.Clear(array, num, length);
			this.bufOff = (int)((ulong)0L);
			this.firstStep = true;
		}

		// Token: 0x040064CC RID: 25804
		[Token(Token = "0x40064CC")]
		private const int blockSize = 8;

		// Token: 0x040064CD RID: 25805
		[Token(Token = "0x40064CD")]
		private const int macSize = 4;

		// Token: 0x040064CE RID: 25806
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x10")]
		[Token(Token = "0x40064CE")]
		private int bufOff;

		// Token: 0x040064CF RID: 25807
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x18")]
		[Token(Token = "0x40064CF")]
		private byte[] buf;

		// Token: 0x040064D0 RID: 25808
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x20")]
		[Token(Token = "0x40064D0")]
		private byte[] mac;

		// Token: 0x040064D1 RID: 25809
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x40064D1")]
		private bool firstStep = true;

		// Token: 0x040064D2 RID: 25810
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x30")]
		[Token(Token = "0x40064D2")]
		private int[] workingKey;

		// Token: 0x040064D3 RID: 25811
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x38")]
		[Token(Token = "0x40064D3")]
		private byte[] macIV;

		// Token: 0x040064D4 RID: 25812
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x40")]
		[Token(Token = "0x40064D4")]
		private byte[] S;
	}
}