Jan2021-Cpp2Il-Dump/Assembly-CSharp/BestHTTP/SecureProtocol/Org/BouncyCastle/Crypto/Modes/CfbBlockCipher.cs

using System;
using System.Runtime.InteropServices;
using Cpp2IlInjected;

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Modes
{
	// Token: 0x02001657 RID: 5719
	[Token(Token = "0x2001657")]
	[StructLayout(3)]
	public class CfbBlockCipher : IBlockCipher
	{
		// Token: 0x06009861 RID: 39009 RVA: 0x0021C498 File Offset: 0x0021A698
		[Token(Token = "0x6009861")]
		[Address(RVA = "0x20E8170", Offset = "0x20E6B70", VA = "0x1820E8170")]
		public CfbBlockCipher(IBlockCipher cipher, int bitBlockSize)
		{
			this.cipher = cipher;
			this.blockSize = bitBlockSize;
			byte[] array = new byte[bitBlockSize];
			this.IV = array;
			byte[] array2 = new byte[array];
			this.cfbV = array2;
			byte[] array3 = new byte[array2];
			this.cfbOutV = array3;
		}

		// Token: 0x06009862 RID: 39010 RVA: 0x0021C4EC File Offset: 0x0021A6EC
		[Token(Token = "0x6009862")]
		[Address(RVA = "0x3C1250", Offset = "0x3BFC50", VA = "0x1803C1250")]
		public IBlockCipher GetUnderlyingCipher()
		{
			return this.cipher;
		}

		// Token: 0x06009863 RID: 39011 RVA: 0x0021C500 File Offset: 0x0021A700
		[Token(Token = "0x6009863")]
		[Address(RVA = "0x20E7F10", Offset = "0x20E6910", VA = "0x1820E7F10", Slot = "5")]
		public void Init(bool forEncryption, ICipherParameters parameters)
		{
			do
			{
				this.encrypting = forEncryption;
				if (parameters == 0 || parameters == 0)
				{
					goto IL_5B;
				}
			}
			while (parameters == 0);
			byte[] iv = this.IV;
			byte[] array;
			int length = array.Length;
			int num = 0;
			int num2 = iv.Length;
			num2 -= length;
			Array.Copy(array, num, iv, num2, length);
			byte[] iv2 = this.IV;
			int num3 = 0;
			Array.Clear(iv2, num3, num2);
			IL_5B:
			byte[] iv3 = this.IV;
			int length2 = iv3.Length;
			int num4 = 0;
			byte[] array2 = this.cfbV;
			int num5 = 0;
			Array.Copy(iv3, num5, array2, num4, length2);
			IBlockCipher blockCipher = this.cipher;
			if (parameters != 0)
			{
				IBlockCipher blockCipher2 = this.cipher;
			}
		}

		// Token: 0x17001877 RID: 6263
		// (get) Token: 0x06009864 RID: 39012 RVA: 0x0021C5B0 File Offset: 0x0021A7B0
		[Token(Token = "0x17001877")]
		public string AlgorithmName
		{
			[Token(Token = "0x6009864")]
			[Address(RVA = "0x20E8250", Offset = "0x20E6C50", VA = "0x1820E8250", Slot = "4")]
			get
			{
				IBlockCipher blockCipher = this.cipher;
				int num = this.blockSize;
				string text;
				return text;
			}
		}

		// Token: 0x17001878 RID: 6264
		// (get) Token: 0x06009865 RID: 39013 RVA: 0x0021C5D4 File Offset: 0x0021A7D4
		[Token(Token = "0x17001878")]
		public bool IsPartialBlockOkay
		{
			[Token(Token = "0x6009865")]
			[Address(RVA = "0x4405A0", Offset = "0x43EFA0", VA = "0x1804405A0", Slot = "7")]
			get
			{
				return true;
			}
		}

		// Token: 0x06009866 RID: 39014 RVA: 0x0021C5E4 File Offset: 0x0021A7E4
		[Token(Token = "0x6009866")]
		[Address(RVA = "0x4CCC20", Offset = "0x4CB620", VA = "0x1804CCC20", Slot = "6")]
		public int GetBlockSize()
		{
			return this.blockSize;
		}

		// Token: 0x06009867 RID: 39015 RVA: 0x0021C5F8 File Offset: 0x0021A7F8
		[Token(Token = "0x6009867")]
		[Address(RVA = "0x20E80D0", Offset = "0x20E6AD0", VA = "0x1820E80D0", Slot = "8")]
		public int ProcessBlock(byte[] input, int inOff, byte[] output, int outOff)
		{
			if (this.encrypting)
			{
				int num;
				return num;
			}
			int num2;
			return num2;
		}

		// Token: 0x06009868 RID: 39016 RVA: 0x0021C614 File Offset: 0x0021A814
		[Token(Token = "0x6009868")]
		[Address(RVA = "0x20E7CF0", Offset = "0x20E66F0", VA = "0x1820E7CF0")]
		public int EncryptBlock(byte[] input, int inOff, byte[] outBytes, int outOff)
		{
			IBlockCipher blockCipher = this.cipher;
			byte[] array = this.cfbOutV;
			byte[] array2 = this.cfbV;
			int num = this.blockSize;
			if (num > 0)
			{
				byte[] array3 = this.cfbOutV;
				int num2 = this.blockSize;
			}
			byte[] array4 = this.cfbV;
			int num3 = array4.Length;
			int num4 = 0;
			num3 -= num;
			Array.Copy(array4, num, array4, num4, num3);
			byte[] array5 = this.cfbV;
			int num5 = this.blockSize;
			int num6 = array5.Length;
			num6 -= num5;
			return this.blockSize;
		}

		// Token: 0x06009869 RID: 39017 RVA: 0x0021C6AC File Offset: 0x0021A8AC
		[Token(Token = "0x6009869")]
		[Address(RVA = "0x20E7AE0", Offset = "0x20E64E0", VA = "0x1820E7AE0")]
		public int DecryptBlock(byte[] input, int inOff, byte[] outBytes, int outOff)
		{
			IBlockCipher blockCipher = this.cipher;
			byte[] array = this.cfbOutV;
			byte[] array2 = this.cfbV;
			int num = array2.Length;
			int num2 = 0;
			int num3 = this.blockSize;
			num -= num3;
			Array.Copy(array2, num3, array2, num2, num);
			byte[] array3 = this.cfbV;
			int num4 = this.blockSize;
			int num5 = array3.Length;
			num5 -= num4;
			Array.Copy(input, inOff, array3, num5, num4);
			int num6 = this.blockSize;
			if (num6 > 0)
			{
				byte[] array4 = this.cfbOutV;
				num6 = num4;
				int num7 = this.blockSize;
			}
			return num6;
		}

		// Token: 0x0600986A RID: 39018 RVA: 0x0021C758 File Offset: 0x0021A958
		[Token(Token = "0x600986A")]
		[Address(RVA = "0x20E8100", Offset = "0x20E6B00", VA = "0x1820E8100", Slot = "9")]
		public void Reset()
		{
			byte[] iv = this.IV;
			int length = iv.Length;
			int num = 0;
			byte[] array = this.cfbV;
			int num2 = 0;
			Array.Copy(iv, num2, array, num, length);
			IBlockCipher blockCipher = this.cipher;
			throw new NullReferenceException();
		}

		// Token: 0x0400641B RID: 25627
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x10")]
		[Token(Token = "0x400641B")]
		private byte[] IV;

		// Token: 0x0400641C RID: 25628
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x18")]
		[Token(Token = "0x400641C")]
		private byte[] cfbV;

		// Token: 0x0400641D RID: 25629
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x20")]
		[Token(Token = "0x400641D")]
		private byte[] cfbOutV;

		// Token: 0x0400641E RID: 25630
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x400641E")]
		private bool encrypting;

		// Token: 0x0400641F RID: 25631
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x2C")]
		[Token(Token = "0x400641F")]
		private readonly int blockSize;

		// Token: 0x04006420 RID: 25632
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x30")]
		[Token(Token = "0x4006420")]
		private readonly IBlockCipher cipher;
	}
}