using System;
using System.Runtime.InteropServices;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities;
using Cpp2IlInjected;

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Macs
{
	// Token: 0x02001674 RID: 5748
	[Token(Token = "0x2001674")]
	[StructLayout(3)]
	public class HMac : IMac
	{
		// Token: 0x06009998 RID: 39320 RVA: 0x00222E10 File Offset: 0x00221010
		[Token(Token = "0x6009998")]
		[Address(RVA = "0x20F1640", Offset = "0x20F0040", VA = "0x1820F1640")]
		public HMac(IDigest digest)
		{
			this.digest = digest;
			byte[] array = new byte[0];
			int num = this.digestSize;
			this.inputPad = array;
			byte[] array2 = new byte[num];
			this.outputBuf = array2;
		}

		// Token: 0x17001891 RID: 6289
		// (get) Token: 0x06009999 RID: 39321 RVA: 0x00222E54 File Offset: 0x00221054
		[Token(Token = "0x17001891")]
		public virtual string AlgorithmName
		{
			[Token(Token = "0x6009999")]
			[Address(RVA = "0x20F16F0", Offset = "0x20F00F0", VA = "0x1820F16F0", Slot = "11")]
			get
			{
				IDigest digest = this.digest;
				return 0 + "/HMAC";
			}
		}

		// Token: 0x0600999A RID: 39322 RVA: 0x00222E7C File Offset: 0x0022107C
		[Token(Token = "0x600999A")]
		[Address(RVA = "0x3C39A0", Offset = "0x3C23A0", VA = "0x1803C39A0", Slot = "12")]
		public virtual IDigest GetUnderlyingDigest()
		{
			return this.digest;
		}

		// Token: 0x0600999B RID: 39323 RVA: 0x00222E90 File Offset: 0x00221090
		[Token(Token = "0x600999B")]
		[Address(RVA = "0x20F1100", Offset = "0x20EFB00", VA = "0x1820F1100", Slot = "13")]
		public virtual void Init(ICipherParameters parameters)
		{
			int length2;
			for (;;)
			{
				IDigest digest = this.digest;
				int num = 0;
				if (parameters != 0 && parameters != 0)
				{
					byte[] array;
					int length = array.Length;
					byte[] array2 = this.inputPad;
					int num2 = 0;
					int num3 = 0;
					Array.Copy(array, num3, array2, num2, length);
					IDigest digest2 = this.digest;
					IDigest digest3 = this.digest;
					int num4 = this.digestSize;
					int num5 = this.blockLength;
					byte[] array3 = this.inputPad;
					num5 -= num4;
					Array.Clear(array3, num4, num5);
					int num6 = this.blockLength;
					int num7 = 0;
					byte[] array4 = this.outputBuf;
					int num8 = 0;
					Array.Copy(this.inputPad, num8, array4, num7, num6);
					if (this.blockLength > 0)
					{
						byte[] array5 = this.inputPad;
						num++;
						if (this.blockLength > 0)
						{
							byte[] array6 = this.outputBuf;
							num++;
						}
						if (num != 0)
						{
							IDigest digest4 = this.digest;
							if (num == 0 || num == 0)
							{
								continue;
							}
							int num9 = this.blockLength;
							this.opadState = num;
							if (num == 0 || num == 0)
							{
								continue;
							}
						}
						byte[] array7 = this.inputPad;
						IDigest digest5 = this.digest;
						length2 = array7.Length;
						if (length2 == 0)
						{
							return;
						}
						IDigest digest6 = this.digest;
						if (length2 != 0 && length2 != 0)
						{
							break;
						}
					}
				}
			}
			this.ipadState = length2;
		}

		// Token: 0x0600999C RID: 39324 RVA: 0x00222FE4 File Offset: 0x002211E4
		[Token(Token = "0x600999C")]
		[Address(RVA = "0x3EE8D0", Offset = "0x3ED2D0", VA = "0x1803EE8D0", Slot = "14")]
		public virtual int GetMacSize()
		{
			return this.digestSize;
		}

		// Token: 0x0600999D RID: 39325 RVA: 0x00222FF8 File Offset: 0x002211F8
		[Token(Token = "0x600999D")]
		[Address(RVA = "0x20F1590", Offset = "0x20EFF90", VA = "0x1820F1590", Slot = "15")]
		public virtual void Update(byte input)
		{
			IDigest digest = this.digest;
			throw new NullReferenceException();
		}

		// Token: 0x0600999E RID: 39326 RVA: 0x00223014 File Offset: 0x00221214
		[Token(Token = "0x600999E")]
		[Address(RVA = "0x20F0E30", Offset = "0x20EF830", VA = "0x1820F0E30", Slot = "16")]
		public virtual void BlockUpdate(byte[] input, int inOff, int len)
		{
			IDigest digest = this.digest;
		}

		// Token: 0x0600999F RID: 39327 RVA: 0x00223030 File Offset: 0x00221230
		[Token(Token = "0x600999F")]
		[Address(RVA = "0x20F0EB0", Offset = "0x20EF8B0", VA = "0x1820F0EB0", Slot = "17")]
		public virtual int DoFinal(byte[] output, int outOff)
		{
			int num;
			int num5;
			for (;;)
			{
				IDigest digest = this.digest;
				num = this.blockLength;
				IMemoable memoable = this.opadState;
				IDigest digest2 = this.digest;
				if (memoable == 0)
				{
					int length = this.outputBuf.Length;
				}
				if (num != 0 && num != 0)
				{
					IDigest digest3 = this.digest;
					int num2 = this.blockLength;
					IDigest digest4 = this.digest;
					int num3 = this.digestSize;
					int num4 = this.blockLength;
					Array.Clear(this.outputBuf, num4, num3);
					IMemoable memoable2 = this.ipadState;
					IDigest digest5 = this.digest;
					if (memoable2 == 0)
					{
						break;
					}
					if (num5 != 0 && num5 != 0)
					{
						goto Block_5;
					}
				}
			}
			num5 = this.inputPad.Length;
			num5 = num;
			return num5;
			Block_5:
			throw new NullReferenceException();
		}

		// Token: 0x060099A0 RID: 39328 RVA: 0x002230E8 File Offset: 0x002212E8
		[Token(Token = "0x60099A0")]
		[Address(RVA = "0x20F1510", Offset = "0x20EFF10", VA = "0x1820F1510", Slot = "18")]
		public virtual void Reset()
		{
			IDigest digest = this.digest;
			byte[] array = this.inputPad;
			IDigest digest2 = this.digest;
			int length = array.Length;
		}

		// Token: 0x060099A1 RID: 39329 RVA: 0x00223118 File Offset: 0x00221318
		[Token(Token = "0x60099A1")]
		[Address(RVA = "0x20F15F0", Offset = "0x20EFFF0", VA = "0x1820F15F0")]
		private static void XorPad(byte[] pad, int len, byte n)
		{
			int num = 0;
			if (len > 0)
			{
				num++;
			}
		}

		// Token: 0x040064D5 RID: 25813
		[Token(Token = "0x40064D5")]
		private const byte IPAD = 54;

		// Token: 0x040064D6 RID: 25814
		[Token(Token = "0x40064D6")]
		private const byte OPAD = 92;

		// Token: 0x040064D7 RID: 25815
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x10")]
		[Token(Token = "0x40064D7")]
		private readonly IDigest digest;

		// Token: 0x040064D8 RID: 25816
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x18")]
		[Token(Token = "0x40064D8")]
		private readonly int digestSize;

		// Token: 0x040064D9 RID: 25817
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x1C")]
		[Token(Token = "0x40064D9")]
		private readonly int blockLength;

		// Token: 0x040064DA RID: 25818
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x20")]
		[Token(Token = "0x40064DA")]
		private IMemoable ipadState;

		// Token: 0x040064DB RID: 25819
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x40064DB")]
		private IMemoable opadState;

		// Token: 0x040064DC RID: 25820
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x30")]
		[Token(Token = "0x40064DC")]
		private readonly byte[] inputPad;

		// Token: 0x040064DD RID: 25821
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x38")]
		[Token(Token = "0x40064DD")]
		private readonly byte[] outputBuf;
	}
}