Apr2020-Cpp2Il-Dump/Assembly-CSharp/BestHTTP/SecureProtocol/Org/BouncyCastle/Crypto/Tls/TlsMac.cs

using System;
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: 0x02001B7F RID: 7039
	[Token(Token = "0x2001B7F")]
	public class TlsMac
	{
		// Token: 0x0600AF2E RID: 44846 RVA: 0x002614CC File Offset: 0x0025F6CC
		[Token(Token = "0x600AF2E")]
		[Address(RVA = "0x198B610", Offset = "0x198A410", VA = "0x18198B610")]
		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);
			if (!TlsUtilities.IsSsl(context))
			{
				HMac hmac = new HMac(digest);
				this.mac = hmac;
			}
			Ssl3Mac ssl3Mac;
			ssl3Mac.digest = digest;
			ssl3Mac.padLength = (int)((uint)48);
			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: 0x17001BB7 RID: 7095
		// (get) Token: 0x0600AF2F RID: 44847 RVA: 0x00261590 File Offset: 0x0025F790
		[Token(Token = "0x17001BB7")]
		public virtual byte[] MacSecret
		{
			[Token(Token = "0x600AF2F")]
			[Address(RVA = "0x3F5F40", Offset = "0x3F4D40", VA = "0x1803F5F40", Slot = "4")]
			get
			{
				return this.secret;
			}
		}

		// Token: 0x17001BB8 RID: 7096
		// (get) Token: 0x0600AF30 RID: 44848 RVA: 0x002615A4 File Offset: 0x0025F7A4
		[Token(Token = "0x17001BB8")]
		public virtual int Size
		{
			[Token(Token = "0x600AF30")]
			[Address(RVA = "0x4730E0", Offset = "0x471EE0", VA = "0x1804730E0", Slot = "5")]
			get
			{
				return this.macLength;
			}
		}

		// Token: 0x0600AF31 RID: 44849 RVA: 0x002615B8 File Offset: 0x0025F7B8
		[Token(Token = "0x600AF31")]
		[Address(RVA = "0x198B350", Offset = "0x198A150", VA = "0x18198B350", 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);
			TlsUtilities.WriteUint8(type, array, 8);
			if (num == 0)
			{
			}
			IMac mac = this.mac;
			int length2 = array.Length;
			IMac mac2 = this.mac;
			return MacUtilities.DoFinal(this.mac);
		}

		// Token: 0x0600AF32 RID: 44850 RVA: 0x00261624 File Offset: 0x0025F824
		[Token(Token = "0x600AF32")]
		[Address(RVA = "0x198B120", Offset = "0x1989F20", VA = "0x18198B120", Slot = "7")]
		public virtual byte[] CalculateMacConstantTime(long seqNo, byte type, byte[] message, int offset, int length, int fullLength, byte[] dummyData)
		{
			int size = this.Size;
			bool flag = TlsUtilities.IsSsl(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: 0x0600AF33 RID: 44851 RVA: 0x00261684 File Offset: 0x0025F884
		[Token(Token = "0x600AF33")]
		[Address(RVA = "0x198B570", Offset = "0x198A370", VA = "0x18198B570", Slot = "8")]
		protected virtual int GetDigestBlockCount(int inputLength)
		{
			int num = this.digestOverhead;
			return num + inputLength;
		}

		// Token: 0x0600AF34 RID: 44852 RVA: 0x002616A0 File Offset: 0x0025F8A0
		[Token(Token = "0x600AF34")]
		[Address(RVA = "0x198B580", Offset = "0x198A380", VA = "0x18198B580", Slot = "9")]
		protected virtual byte[] Truncate(byte[] bs)
		{
			int num = this.macLength;
			if (bs.Length > num)
			{
				return Arrays.CopyOf(bs, num);
			}
			return bs;
		}

		// Token: 0x0400701D RID: 28701
		[FieldOffset(Offset = "0x10")]
		[Token(Token = "0x400701D")]
		protected readonly TlsContext context;

		// Token: 0x0400701E RID: 28702
		[FieldOffset(Offset = "0x18")]
		[Token(Token = "0x400701E")]
		protected readonly byte[] secret;

		// Token: 0x0400701F RID: 28703
		[FieldOffset(Offset = "0x20")]
		[Token(Token = "0x400701F")]
		protected readonly IMac mac;

		// Token: 0x04007020 RID: 28704
		[FieldOffset(Offset = "0x28")]
		[Token(Token = "0x4007020")]
		protected readonly int digestBlockSize;

		// Token: 0x04007021 RID: 28705
		[FieldOffset(Offset = "0x2C")]
		[Token(Token = "0x4007021")]
		protected readonly int digestOverhead;

		// Token: 0x04007022 RID: 28706
		[FieldOffset(Offset = "0x30")]
		[Token(Token = "0x4007022")]
		protected readonly int macLength;
	}
}