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

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Prng.Drbg
{
	// Token: 0x020015F8 RID: 5624
	[Token(Token = "0x20015F8")]
	[StructLayout(3)]
	public class HMacSP800Drbg : ISP80090Drbg
	{
		// Token: 0x0600964E RID: 38478 RVA: 0x00215AB4 File Offset: 0x00213CB4
		[Token(Token = "0x600964E")]
		[Address(RVA = "0x1E41E60", Offset = "0x1E40860", VA = "0x181E41E60")]
		public HMacSP800Drbg(IMac hMac, int securityStrength, IEntropySource entropySource, byte[] personalizationString, byte[] nonce)
		{
			this.mHMac = hMac;
			this.mSecurityStrength = securityStrength;
			this.mEntropySource = entropySource;
			byte[] entropy = this.GetEntropy();
			byte[][] array = new byte[3][];
			if (entropy != 0)
			{
			}
			array[0] = entropy;
			byte[] array2 = Arrays.ConcatenateAll(array);
			byte[] array3 = new byte[array2];
			this.mK = array3;
			byte[] array4 = new byte[array3.Length];
			this.mV = array4;
			int num = 0;
			this.hmac_DRBG_Update_Func(array2, (byte)num);
			if (array2 != 0)
			{
			}
			this.mReseedCounter = (long)((ulong)1L);
		}

		// Token: 0x0600964F RID: 38479 RVA: 0x00215B50 File Offset: 0x00213D50
		[Token(Token = "0x600964F")]
		[Address(RVA = "0x1E42430", Offset = "0x1E40E30", VA = "0x181E42430")]
		private void hmac_DRBG_Update(byte[] seedMaterial)
		{
			int num = 0;
			this.hmac_DRBG_Update_Func(seedMaterial, (byte)num);
			if (seedMaterial != 0)
			{
			}
		}

		// Token: 0x06009650 RID: 38480 RVA: 0x00215B6C File Offset: 0x00213D6C
		[Token(Token = "0x6009650")]
		[Address(RVA = "0x1E42240", Offset = "0x1E40C40", VA = "0x181E42240")]
		private void hmac_DRBG_Update_Func(byte[] seedMaterial, byte vValue)
		{
			IMac mac = this.mHMac;
			KeyParameter keyParameter = new KeyParameter(this.mK);
			byte[] array = this.mV;
			IMac mac2 = this.mHMac;
			int length = array.Length;
			IMac mac3 = this.mHMac;
			if (seedMaterial != 0)
			{
				IMac mac4 = this.mHMac;
				int length2 = seedMaterial.Length;
			}
			IMac mac5 = this.mHMac;
			IMac mac6 = this.mHMac;
			KeyParameter keyParameter2 = new KeyParameter(this.mK);
			byte[] array2 = this.mV;
			IMac mac7 = this.mHMac;
			int length3 = array2.Length;
			IMac mac8 = this.mHMac;
		}

		// Token: 0x170017F5 RID: 6133
		// (get) Token: 0x06009651 RID: 38481 RVA: 0x00215C08 File Offset: 0x00213E08
		[Token(Token = "0x170017F5")]
		public int BlockSize
		{
			[Token(Token = "0x6009651")]
			[Address(RVA = "0x1E42220", Offset = "0x1E40C20", VA = "0x181E42220", Slot = "4")]
			get
			{
				return this.mV.Length;
			}
		}

		// Token: 0x06009652 RID: 38482 RVA: 0x00215C28 File Offset: 0x00213E28
		[Token(Token = "0x6009652")]
		[Address(RVA = "0x1E41770", Offset = "0x1E40170", VA = "0x181E41770", Slot = "5")]
		public int Generate(byte[] output, byte[] additionalInput, bool predictionResistant)
		{
			int length = output.Length;
			long num = this.mReseedCounter;
			if (predictionResistant)
			{
				byte[] array = Arrays.Concatenate(this.GetEntropy(), additionalInput);
				int num2 = 0;
				this.hmac_DRBG_Update_Func(array, (byte)num2);
				if (array != 0)
				{
					ulong num3;
					this.hmac_DRBG_Update_Func(array, (byte)num3);
				}
				this.mReseedCounter = (long)((ulong)1L);
			}
			if (additionalInput != 0)
			{
				int num4 = 0;
				this.hmac_DRBG_Update_Func(additionalInput, (byte)num4);
				ulong num5;
				this.hmac_DRBG_Update_Func(additionalInput, (byte)num5);
			}
			byte[] array2 = new byte[output.Length];
			byte[] array3 = this.mV;
			int length2 = output.Length;
			IMac mac = this.mHMac;
			KeyParameter keyParameter = new KeyParameter(this.mK);
			int num6 = 0;
			int num10;
			if (length2 > 0)
			{
				byte[] array4 = this.mV;
				IMac mac2 = this.mHMac;
				int num7 = 0;
				if (num7 < mac)
				{
					num7 += num7;
					num7++;
				}
				int num8 = 0;
				IMac mac3 = this.mHMac;
				int num9 = 0;
				if (num9 < num8)
				{
					num9 += num9;
					num9++;
				}
				byte[] array5 = this.mV;
				num10 = array5.Length;
				int num11 = num10 * num6;
				int num12 = 0;
				Array.Copy(array5, num12, array2, num11, num10);
				num6++;
			}
			num10 = this.mV.Length;
			if (num10 * length2 < array2.Length)
			{
				IMac mac4 = this.mHMac;
				IMac mac5 = this.mHMac;
				byte[] array6 = this.mV;
				int length3 = array6.Length;
				int num13 = array2.Length;
				int num14 = 0;
				int num15 = length3 * length2;
				num13 -= num15;
				Array.Copy(array6, num14, array2, num15, num13);
			}
			int num16 = 0;
			this.hmac_DRBG_Update_Func(additionalInput, (byte)num16);
			if (additionalInput != 0)
			{
				ulong num17;
				this.hmac_DRBG_Update_Func(additionalInput, (byte)num17);
			}
			int num18 = 0;
			int length4 = output.Length;
			int num19 = 0;
			Array.Copy(array2, num19, output, num18, length4);
			return length;
		}

		// Token: 0x06009653 RID: 38483 RVA: 0x00215DF8 File Offset: 0x00213FF8
		[Token(Token = "0x6009653")]
		[Address(RVA = "0x1E41D50", Offset = "0x1E40750", VA = "0x181E41D50", Slot = "6")]
		public void Reseed(byte[] additionalInput)
		{
			byte[] array = Arrays.Concatenate(this.GetEntropy(), additionalInput);
			int num = 0;
			this.hmac_DRBG_Update_Func(array, (byte)num);
			if (array != 0)
			{
			}
			this.mReseedCounter = (long)((ulong)1L);
		}

		// Token: 0x06009654 RID: 38484 RVA: 0x00215E2C File Offset: 0x0021402C
		[Token(Token = "0x6009654")]
		[Address(RVA = "0x1E41CB0", Offset = "0x1E406B0", VA = "0x181E41CB0")]
		private byte[] GetEntropy()
		{
			IEntropySource entropySource = this.mEntropySource;
			int num = this.mSecurityStrength;
			num += 7;
			num += typeof(IEntropySource).TypeHandle;
			throw new NullReferenceException();
		}

		// Token: 0x0400633F RID: 25407
		[Token(Token = "0x400633F")]
		private static readonly long RESEED_MAX = (long)((ulong)140737488355328L);

		// Token: 0x04006340 RID: 25408
		[Token(Token = "0x4006340")]
		private static readonly int MAX_BITS_REQUEST;

		// Token: 0x04006341 RID: 25409
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x10")]
		[Token(Token = "0x4006341")]
		private readonly byte[] mK;

		// Token: 0x04006342 RID: 25410
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x18")]
		[Token(Token = "0x4006342")]
		private readonly byte[] mV;

		// Token: 0x04006343 RID: 25411
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x20")]
		[Token(Token = "0x4006343")]
		private readonly IEntropySource mEntropySource;

		// Token: 0x04006344 RID: 25412
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x4006344")]
		private readonly IMac mHMac;

		// Token: 0x04006345 RID: 25413
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x30")]
		[Token(Token = "0x4006345")]
		private readonly int mSecurityStrength;

		// Token: 0x04006346 RID: 25414
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x38")]
		[Token(Token = "0x4006346")]
		private long mReseedCounter;
	}
}