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

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Encodings
{
	// Token: 0x020016DF RID: 5855
	[Token(Token = "0x20016DF")]
	[StructLayout(3)]
	public class ISO9796d1Encoding : IAsymmetricBlockCipher
	{
		// Token: 0x06009D8D RID: 40333 RVA: 0x00242330 File Offset: 0x00240530
		[Token(Token = "0x6009D8D")]
		[Address(RVA = "0x3C3A30", Offset = "0x3C2430", VA = "0x1803C3A30")]
		public ISO9796d1Encoding(IAsymmetricBlockCipher cipher)
		{
			this.engine = cipher;
		}

		// Token: 0x17001902 RID: 6402
		// (get) Token: 0x06009D8E RID: 40334 RVA: 0x0024234C File Offset: 0x0024054C
		[Token(Token = "0x17001902")]
		public string AlgorithmName
		{
			[Token(Token = "0x6009D8E")]
			[Address(RVA = "0x205BF90", Offset = "0x205A990", VA = "0x18205BF90", Slot = "4")]
			get
			{
				IAsymmetricBlockCipher asymmetricBlockCipher = this.engine;
				return 0 + "/ISO9796-1Padding";
			}
		}

		// Token: 0x06009D8F RID: 40335 RVA: 0x00242374 File Offset: 0x00240574
		[Token(Token = "0x6009D8F")]
		[Address(RVA = "0x3C39A0", Offset = "0x3C23A0", VA = "0x1803C39A0")]
		public IAsymmetricBlockCipher GetUnderlyingCipher()
		{
			return this.engine;
		}

		// Token: 0x06009D90 RID: 40336 RVA: 0x00242388 File Offset: 0x00240588
		[Token(Token = "0x6009D90")]
		[Address(RVA = "0x205BC10", Offset = "0x205A610", VA = "0x18205BC10", Slot = "5")]
		public void Init(bool forEncryption, ICipherParameters parameters)
		{
			while (parameters != 0)
			{
				if ((parameters != 0 || parameters != 0) && parameters != 0 && parameters != 0)
				{
					if (parameters == 0)
					{
						IL_2A:
						IAsymmetricBlockCipher asymmetricBlockCipher = this.engine;
						this.modulus = (uint)1;
						this.forEncryption = forEncryption;
						int num;
						this.bitSize = num;
						return;
					}
					if (parameters != 0)
					{
						break;
					}
				}
			}
			goto IL_2A;
		}

		// Token: 0x06009D91 RID: 40337 RVA: 0x002423E4 File Offset: 0x002405E4
		[Token(Token = "0x6009D91")]
		[Address(RVA = "0x205BB50", Offset = "0x205A550", VA = "0x18205BB50", Slot = "6")]
		public int GetInputBlockSize()
		{
			IAsymmetricBlockCipher asymmetricBlockCipher = this.engine;
			if (this.inverse != (ulong)0L)
			{
			}
			throw new NullReferenceException();
		}

		// Token: 0x06009D92 RID: 40338 RVA: 0x00242408 File Offset: 0x00240608
		[Token(Token = "0x6009D92")]
		[Address(RVA = "0x205BBB0", Offset = "0x205A5B0", VA = "0x18205BBB0", Slot = "7")]
		public int GetOutputBlockSize()
		{
			IAsymmetricBlockCipher asymmetricBlockCipher = this.engine;
			if (this.inverse == (ulong)0L)
			{
			}
			throw new NullReferenceException();
		}

		// Token: 0x06009D93 RID: 40339 RVA: 0x0024242C File Offset: 0x0024062C
		[Token(Token = "0x6009D93")]
		[Address(RVA = "0x205BE30", Offset = "0x205A830", VA = "0x18205BE30")]
		public void SetPadBits(int padBits)
		{
			this.padBits = padBits;
		}

		// Token: 0x06009D94 RID: 40340 RVA: 0x0024244C File Offset: 0x0024064C
		[Token(Token = "0x6009D94")]
		[Address(RVA = "0x4FBD40", Offset = "0x4FA740", VA = "0x1804FBD40")]
		public int GetPadBits()
		{
			return this.padBits;
		}

		// Token: 0x06009D95 RID: 40341 RVA: 0x00242460 File Offset: 0x00240660
		[Token(Token = "0x6009D95")]
		[Address(RVA = "0x205BE00", Offset = "0x205A800", VA = "0x18205BE00", Slot = "8")]
		public byte[] ProcessBlock(byte[] input, int inOff, int length)
		{
			if (this.inverse == (ulong)0L)
			{
				return this.DecodeBlock(input, inOff, length);
			}
			return this.EncodeBlock(input, inOff, length);
		}

		// Token: 0x06009D96 RID: 40342 RVA: 0x0024248C File Offset: 0x0024068C
		[Token(Token = "0x6009D96")]
		[Address(RVA = "0x205B7C0", Offset = "0x205A1C0", VA = "0x18205B7C0")]
		private byte[] EncodeBlock(byte[] input, int inOff, int inLen)
		{
			int num = this.bitSize;
			num += 7;
			byte[] array = new byte[input];
			int num2 = this.padBits;
			int num3 = this.bitSize;
			num2++;
			num3 += 13;
			int num4 = 0;
			num3 += input;
			if (num3 > 0)
			{
				num3 -= inLen;
				int num5 = array.Length;
				num5 -= num4;
				num5 -= inLen;
				int num6 = array.Length;
				num6 -= inLen;
				num4 += inLen;
				num3 = inLen - inLen;
			}
			int num7 = array.Length;
			num7 -= num3;
			int length = array.Length;
			int num8;
			if (num7 != length)
			{
				num3 = num7;
				num3 -= 0;
				num3 -= num3;
				num8 = ISO9796d1Encoding.shadows.Length;
				num8 = num7;
				num8++;
				num7 += 2;
			}
			byte b;
			num8 -= (int)b;
			int length2 = array.Length;
			if (length2 - 1 < length2)
			{
			}
			uint num9;
			byte b2;
			num9 -= (uint)b2;
			int length3 = array.Length;
			if (num9 == (uint)8)
			{
				array[0] = (byte)((ulong)0L);
			}
			uint num10;
			array[0] = (byte)num10;
			uint num11;
			array[0] = (byte)num11;
			int num12 = 0;
			int num13 = array.Length;
			num13 -= num12;
			throw new NullReferenceException();
		}

		// Token: 0x06009D97 RID: 40343 RVA: 0x002425A4 File Offset: 0x002407A4
		[Token(Token = "0x6009D97")]
		[Address(RVA = "0x205B1C0", Offset = "0x2059BC0", VA = "0x18205B1C0")]
		private byte[] DecodeBlock(byte[] input, int inOff, int inLen)
		{
			/*
An exception occurred when decompiling this method (06009D97)

ICSharpCode.Decompiler.DecompilerException: Error decompiling System.Byte[] BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Encodings.ISO9796d1Encoding::DecodeBlock(System.Byte[],System.Int32,System.Int32)

 ---> System.Exception: Basic block has to end with unconditional control flow. 
{
	IL_140:
	stloc:InvalidCipherTextException(var_33_14A, newobj:InvalidCipherTextException(InvalidCipherTextException::.ctor, ldstr:string("resulting integer iS or (modulus - iS) is not congruent to 6 mod 16")))
}

   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: 0x06009D98 RID: 40344 RVA: 0x002426FC File Offset: 0x002408FC
		// Note: this type is marked as 'beforefieldinit'.
		[Token(Token = "0x6009D98")]
		[Address(RVA = "0x205BEA0", Offset = "0x205A8A0", VA = "0x18205BEA0")]
		static ISO9796d1Encoding()
		{
			BigInteger bigInteger;
			ISO9796d1Encoding.Sixteen = bigInteger;
			BigInteger bigInteger2;
			ISO9796d1Encoding.Six = bigInteger2;
			byte[] array = new byte[16];
			RuntimeHelpers.InitializeArray(array, fieldof(<PrivateImplementationDetails>.27C3AB82CCA6CE2F199F4F670BF19513A3825B87).FieldHandle);
			ISO9796d1Encoding.shadows = array;
			byte[] array2 = new byte[16];
			RuntimeHelpers.InitializeArray(array2, fieldof(<PrivateImplementationDetails>.30F65A149AF7DE938A9287048498B966AEBE54D4).FieldHandle);
			ISO9796d1Encoding.inverse = array2;
		}

		// Token: 0x040067BF RID: 26559
		[Token(Token = "0x40067BF")]
		private static readonly BigInteger Sixteen;

		// Token: 0x040067C0 RID: 26560
		[Token(Token = "0x40067C0")]
		private static readonly BigInteger Six;

		// Token: 0x040067C1 RID: 26561
		[Token(Token = "0x40067C1")]
		private static readonly byte[] shadows;

		// Token: 0x040067C2 RID: 26562
		[Token(Token = "0x40067C2")]
		private static readonly byte[] inverse;

		// Token: 0x040067C3 RID: 26563
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x10")]
		[Token(Token = "0x40067C3")]
		private readonly IAsymmetricBlockCipher engine;

		// Token: 0x040067C4 RID: 26564
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x18")]
		[Token(Token = "0x40067C4")]
		private bool forEncryption;

		// Token: 0x040067C5 RID: 26565
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x1C")]
		[Token(Token = "0x40067C5")]
		private int bitSize;

		// Token: 0x040067C6 RID: 26566
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x20")]
		[Token(Token = "0x40067C6")]
		private int padBits;

		// Token: 0x040067C7 RID: 26567
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x40067C7")]
		private BigInteger modulus;
	}
}