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

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Encodings
{
	// Token: 0x02001CBC RID: 7356
	[Token(Token = "0x2001CBC")]
	public class ISO9796d1Encoding : IAsymmetricBlockCipher
	{
		// Token: 0x0600B967 RID: 47463 RVA: 0x0029A444 File Offset: 0x00298644
		[Token(Token = "0x600B967")]
		[Address(RVA = "0x3FFB80", Offset = "0x3FE980", VA = "0x1803FFB80")]
		public ISO9796d1Encoding(IAsymmetricBlockCipher cipher)
		{
			this.engine = cipher;
		}

		// Token: 0x17001D03 RID: 7427
		// (get) Token: 0x0600B968 RID: 47464 RVA: 0x0029A460 File Offset: 0x00298660
		[Token(Token = "0x17001D03")]
		public string AlgorithmName
		{
			[Token(Token = "0x600B968")]
			[Address(RVA = "0x1A740B0", Offset = "0x1A72EB0", VA = "0x181A740B0", Slot = "4")]
			get
			{
				IAsymmetricBlockCipher asymmetricBlockCipher = this.engine;
				return 0 + "/ISO9796-1Padding";
			}
		}

		// Token: 0x0600B969 RID: 47465 RVA: 0x0029A488 File Offset: 0x00298688
		[Token(Token = "0x600B969")]
		[Address(RVA = "0x3F6E20", Offset = "0x3F5C20", VA = "0x1803F6E20")]
		public IAsymmetricBlockCipher GetUnderlyingCipher()
		{
			return this.engine;
		}

		// Token: 0x0600B96A RID: 47466 RVA: 0x0029A49C File Offset: 0x0029869C
		[Token(Token = "0x600B96A")]
		[Address(RVA = "0x1A73D30", Offset = "0x1A72B30", VA = "0x181A73D30", 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: 0x0600B96B RID: 47467 RVA: 0x0029A4F8 File Offset: 0x002986F8
		[Token(Token = "0x600B96B")]
		[Address(RVA = "0x1A73C70", Offset = "0x1A72A70", VA = "0x181A73C70", Slot = "6")]
		public int GetInputBlockSize()
		{
			IAsymmetricBlockCipher asymmetricBlockCipher = this.engine;
			if (this.inverse != (ulong)0L)
			{
			}
			throw new NullReferenceException();
		}

		// Token: 0x0600B96C RID: 47468 RVA: 0x0029A51C File Offset: 0x0029871C
		[Token(Token = "0x600B96C")]
		[Address(RVA = "0x1A73CD0", Offset = "0x1A72AD0", VA = "0x181A73CD0", Slot = "7")]
		public int GetOutputBlockSize()
		{
			IAsymmetricBlockCipher asymmetricBlockCipher = this.engine;
			if (this.inverse == (ulong)0L)
			{
			}
			throw new NullReferenceException();
		}

		// Token: 0x0600B96D RID: 47469 RVA: 0x0029A540 File Offset: 0x00298740
		[Token(Token = "0x600B96D")]
		[Address(RVA = "0x1A73F50", Offset = "0x1A72D50", VA = "0x181A73F50")]
		public void SetPadBits(int padBits)
		{
			this.padBits = padBits;
		}

		// Token: 0x0600B96E RID: 47470 RVA: 0x0029A560 File Offset: 0x00298760
		[Token(Token = "0x600B96E")]
		[Address(RVA = "0x3F7310", Offset = "0x3F6110", VA = "0x1803F7310")]
		public int GetPadBits()
		{
			return this.padBits;
		}

		// Token: 0x0600B96F RID: 47471 RVA: 0x0029A574 File Offset: 0x00298774
		[Token(Token = "0x600B96F")]
		[Address(RVA = "0x1A73F20", Offset = "0x1A72D20", VA = "0x181A73F20", 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: 0x0600B970 RID: 47472 RVA: 0x0029A5A0 File Offset: 0x002987A0
		[Token(Token = "0x600B970")]
		[Address(RVA = "0x1A738E0", Offset = "0x1A726E0", VA = "0x181A738E0")]
		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: 0x0600B971 RID: 47473 RVA: 0x0029A6B8 File Offset: 0x002988B8
		[Token(Token = "0x600B971")]
		[Address(RVA = "0x1A732E0", Offset = "0x1A720E0", VA = "0x181A732E0")]
		private byte[] DecodeBlock(byte[] input, int inOff, int inLen)
		{
			/*
An exception occurred when decompiling this method (0600B971)

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: 0x0600B972 RID: 47474 RVA: 0x0029A810 File Offset: 0x00298A10
		// Note: this type is marked as 'beforefieldinit'.
		[Token(Token = "0x600B972")]
		[Address(RVA = "0x1A73FC0", Offset = "0x1A72DC0", VA = "0x181A73FC0")]
		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: 0x04007602 RID: 30210
		[Token(Token = "0x4007602")]
		private static readonly BigInteger Sixteen;

		// Token: 0x04007603 RID: 30211
		[Token(Token = "0x4007603")]
		private static readonly BigInteger Six;

		// Token: 0x04007604 RID: 30212
		[Token(Token = "0x4007604")]
		private static readonly byte[] shadows;

		// Token: 0x04007605 RID: 30213
		[Token(Token = "0x4007605")]
		private static readonly byte[] inverse;

		// Token: 0x04007606 RID: 30214
		[FieldOffset(Offset = "0x10")]
		[Token(Token = "0x4007606")]
		private readonly IAsymmetricBlockCipher engine;

		// Token: 0x04007607 RID: 30215
		[FieldOffset(Offset = "0x18")]
		[Token(Token = "0x4007607")]
		private bool forEncryption;

		// Token: 0x04007608 RID: 30216
		[FieldOffset(Offset = "0x1C")]
		[Token(Token = "0x4007608")]
		private int bitSize;

		// Token: 0x04007609 RID: 30217
		[FieldOffset(Offset = "0x20")]
		[Token(Token = "0x4007609")]
		private int padBits;

		// Token: 0x0400760A RID: 30218
		[FieldOffset(Offset = "0x28")]
		[Token(Token = "0x400760A")]
		private BigInteger modulus;
	}
}