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

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Macs
{
	// Token: 0x02001C51 RID: 7249
	[Token(Token = "0x2001C51")]
	public class HMac : IMac
	{
		// Token: 0x0600B572 RID: 46450 RVA: 0x0027A428 File Offset: 0x00278628
		[Token(Token = "0x600B572")]
		[Address(RVA = "0x1C286A0", Offset = "0x1C274A0", VA = "0x181C286A0")]
		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: 0x17001C92 RID: 7314
		// (get) Token: 0x0600B573 RID: 46451 RVA: 0x0027A46C File Offset: 0x0027866C
		[Token(Token = "0x17001C92")]
		public virtual string AlgorithmName
		{
			[Token(Token = "0x600B573")]
			[Address(RVA = "0x1C28750", Offset = "0x1C27550", VA = "0x181C28750", Slot = "11")]
			get
			{
				IDigest digest = this.digest;
				return 0 + "/HMAC";
			}
		}

		// Token: 0x0600B574 RID: 46452 RVA: 0x0027A494 File Offset: 0x00278694
		[Token(Token = "0x600B574")]
		[Address(RVA = "0x3F6E20", Offset = "0x3F5C20", VA = "0x1803F6E20", Slot = "12")]
		public virtual IDigest GetUnderlyingDigest()
		{
			return this.digest;
		}

		// Token: 0x0600B575 RID: 46453 RVA: 0x0027A4A8 File Offset: 0x002786A8
		[Token(Token = "0x600B575")]
		[Address(RVA = "0x1C28160", Offset = "0x1C26F60", VA = "0x181C28160", 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: 0x0600B576 RID: 46454 RVA: 0x0027A5FC File Offset: 0x002787FC
		[Token(Token = "0x600B576")]
		[Address(RVA = "0x40B720", Offset = "0x40A520", VA = "0x18040B720", Slot = "14")]
		public virtual int GetMacSize()
		{
			return this.digestSize;
		}

		// Token: 0x0600B577 RID: 46455 RVA: 0x0027A610 File Offset: 0x00278810
		[Token(Token = "0x600B577")]
		[Address(RVA = "0x1C285F0", Offset = "0x1C273F0", VA = "0x181C285F0", Slot = "15")]
		public virtual void Update(byte input)
		{
			IDigest digest = this.digest;
			throw new NullReferenceException();
		}

		// Token: 0x0600B578 RID: 46456 RVA: 0x0027A62C File Offset: 0x0027882C
		[Token(Token = "0x600B578")]
		[Address(RVA = "0x1C27E90", Offset = "0x1C26C90", VA = "0x181C27E90", Slot = "16")]
		public virtual void BlockUpdate(byte[] input, int inOff, int len)
		{
			IDigest digest = this.digest;
		}

		// Token: 0x0600B579 RID: 46457 RVA: 0x0027A648 File Offset: 0x00278848
		[Token(Token = "0x600B579")]
		[Address(RVA = "0x1C27F10", Offset = "0x1C26D10", VA = "0x181C27F10", 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: 0x0600B57A RID: 46458 RVA: 0x0027A700 File Offset: 0x00278900
		[Token(Token = "0x600B57A")]
		[Address(RVA = "0x1C28570", Offset = "0x1C27370", VA = "0x181C28570", Slot = "18")]
		public virtual void Reset()
		{
			IDigest digest = this.digest;
			byte[] array = this.inputPad;
			IDigest digest2 = this.digest;
			int length = array.Length;
		}

		// Token: 0x0600B57B RID: 46459 RVA: 0x0027A730 File Offset: 0x00278930
		[Token(Token = "0x600B57B")]
		[Address(RVA = "0x1C28650", Offset = "0x1C27450", VA = "0x181C28650")]
		private static void XorPad(byte[] pad, int len, byte n)
		{
			int num = 0;
			if (len > 0)
			{
				num++;
			}
		}

		// Token: 0x04007318 RID: 29464
		[Token(Token = "0x4007318")]
		private const byte IPAD = 54;

		// Token: 0x04007319 RID: 29465
		[Token(Token = "0x4007319")]
		private const byte OPAD = 92;

		// Token: 0x0400731A RID: 29466
		[FieldOffset(Offset = "0x10")]
		[Token(Token = "0x400731A")]
		private readonly IDigest digest;

		// Token: 0x0400731B RID: 29467
		[FieldOffset(Offset = "0x18")]
		[Token(Token = "0x400731B")]
		private readonly int digestSize;

		// Token: 0x0400731C RID: 29468
		[FieldOffset(Offset = "0x1C")]
		[Token(Token = "0x400731C")]
		private readonly int blockLength;

		// Token: 0x0400731D RID: 29469
		[FieldOffset(Offset = "0x20")]
		[Token(Token = "0x400731D")]
		private IMemoable ipadState;

		// Token: 0x0400731E RID: 29470
		[FieldOffset(Offset = "0x28")]
		[Token(Token = "0x400731E")]
		private IMemoable opadState;

		// Token: 0x0400731F RID: 29471
		[FieldOffset(Offset = "0x30")]
		[Token(Token = "0x400731F")]
		private readonly byte[] inputPad;

		// Token: 0x04007320 RID: 29472
		[FieldOffset(Offset = "0x38")]
		[Token(Token = "0x4007320")]
		private readonly byte[] outputBuf;
	}
}