Jan2021-Cpp2Il-Dump/Assembly-CSharp/BestHTTP/SecureProtocol/Org/BouncyCastle/Crypto/Tls/TlsMac.cs

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

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Tls
{
	// Token: 0x020015A2 RID: 5538
	[Token(Token = "0x20015A2")]
	[StructLayout(3)]
	public class TlsMac
	{
		// Token: 0x06009354 RID: 37716 RVA: 0x00209E14 File Offset: 0x00208014
		[Token(Token = "0x6009354")]
		[Address(RVA = "0x1DFDF30", Offset = "0x1DFC930", VA = "0x181DFDF30")]
		public TlsMac(TlsContext context, IDigest digest, byte[] key, int keyOff, int keyLen)
		{
			this.context = context;
			KeyParameter keyParameter;
			byte[] array = Arrays.Clone(keyParameter.GetKey());
			this.secret = array;
			if (digest != 0)
			{
			}
			this.digestBlockSize = (int)((uint)128);
			this.digestOverhead = (int)((uint)16);
			bool flag;
			if (!flag)
			{
				HMac hmac = new HMac(digest);
				this.mac = hmac;
			}
			Ssl3Mac ssl3Mac = new Ssl3Mac(digest);
			this.mac = ssl3Mac;
			if (ssl3Mac == (ulong)20L)
			{
				this.digestOverhead = (int)((ulong)4L);
			}
			IMac mac = this.mac;
			IMac mac2 = this.mac;
			this.macLength = ssl3Mac;
			int num = Math.Min(this.macLength, 10);
			this.macLength = num;
		}

		// Token: 0x170017B6 RID: 6070
		// (get) Token: 0x06009355 RID: 37717 RVA: 0x00209ECC File Offset: 0x002080CC
		[Token(Token = "0x170017B6")]
		public virtual byte[] MacSecret
		{
			[Token(Token = "0x6009355")]
			[Address(RVA = "0x3C1240", Offset = "0x3BFC40", VA = "0x1803C1240", Slot = "4")]
			get
			{
				return this.secret;
			}
		}

		// Token: 0x170017B7 RID: 6071
		// (get) Token: 0x06009356 RID: 37718 RVA: 0x00209EE0 File Offset: 0x002080E0
		[Token(Token = "0x170017B7")]
		public virtual int Size
		{
			[Token(Token = "0x6009356")]
			[Address(RVA = "0x3EDF60", Offset = "0x3EC960", VA = "0x1803EDF60", Slot = "5")]
			get
			{
				return this.macLength;
			}
		}

		// Token: 0x06009357 RID: 37719 RVA: 0x00209EF4 File Offset: 0x002080F4
		[Token(Token = "0x6009357")]
		[Address(RVA = "0x1DFDC30", Offset = "0x1DFC630", VA = "0x181DFDC30", Slot = "6")]
		public virtual byte[] CalculateMac(long seqNo, byte type, byte[] message, int offset, int length)
		{
			TlsContext tlsContext = this.context;
			bool flag;
			if (flag)
			{
			}
			int num = 0;
			byte[] array = new byte[13];
			int num2 = 0;
			TlsUtilities.WriteUint64(seqNo, array, num2);
			array[1] = type;
			if (num == 0)
			{
			}
			int length2 = array.Length;
			IMac mac = this.mac;
			int length3 = array.Length;
			IMac mac2 = this.mac;
			return MacUtilities.DoFinal(this.mac);
		}

		// Token: 0x06009358 RID: 37720 RVA: 0x00209F60 File Offset: 0x00208160
		[Token(Token = "0x6009358")]
		[Address(RVA = "0x1DFD9C0", Offset = "0x1DFC3C0", VA = "0x181DFD9C0", Slot = "7")]
		public virtual byte[] CalculateMacConstantTime(long seqNo, byte type, byte[] message, int offset, int length, int fullLength, byte[] dummyData)
		{
			int size = this.Size;
			TlsContext tlsContext = this.context;
			byte[] array;
			byte[] array2;
			array -= array2;
			int num = 0;
			IMac mac = this.mac;
			num += num;
			num++;
			IMac mac2 = this.mac;
			num += 4;
			num += 19;
			IMac mac3 = this.mac;
			throw new NullReferenceException();
		}

		// Token: 0x06009359 RID: 37721 RVA: 0x00209FBC File Offset: 0x002081BC
		[Token(Token = "0x6009359")]
		[Address(RVA = "0x1DFDE90", Offset = "0x1DFC890", VA = "0x181DFDE90", Slot = "8")]
		protected virtual int GetDigestBlockCount(int inputLength)
		{
			int num = this.digestOverhead;
			return num + inputLength;
		}

		// Token: 0x0600935A RID: 37722 RVA: 0x00209FD8 File Offset: 0x002081D8
		[Token(Token = "0x600935A")]
		[Address(RVA = "0x1DFDEA0", Offset = "0x1DFC8A0", VA = "0x181DFDEA0", Slot = "9")]
		protected virtual byte[] Truncate(byte[] bs)
		{
			int num = this.macLength;
			if (bs.Length > num)
			{
				return Arrays.CopyOf(bs, num);
			}
			return bs;
		}

		// Token: 0x040061DA RID: 25050
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x10")]
		[Token(Token = "0x40061DA")]
		protected readonly TlsContext context;

		// Token: 0x040061DB RID: 25051
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x18")]
		[Token(Token = "0x40061DB")]
		protected readonly byte[] secret;

		// Token: 0x040061DC RID: 25052
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x20")]
		[Token(Token = "0x40061DC")]
		protected readonly IMac mac;

		// Token: 0x040061DD RID: 25053
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x40061DD")]
		protected readonly int digestBlockSize;

		// Token: 0x040061DE RID: 25054
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x2C")]
		[Token(Token = "0x40061DE")]
		protected readonly int digestOverhead;

		// Token: 0x040061DF RID: 25055
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x30")]
		[Token(Token = "0x40061DF")]
		protected readonly int macLength;
	}
}