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

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Prng.Drbg
{
	// Token: 0x020015F9 RID: 5625
	[Token(Token = "0x20015F9")]
	[StructLayout(3)]
	public class HashSP800Drbg : ISP80090Drbg
	{
		// Token: 0x06009656 RID: 38486 RVA: 0x00215E74 File Offset: 0x00214074
		[Token(Token = "0x6009656")]
		[Address(RVA = "0x1E43010", Offset = "0x1E41A10", VA = "0x181E43010")]
		static HashSP800Drbg()
		{
			IDictionary dictionary = HashSP800Drbg.seedlens;
			IDictionary dictionary2 = HashSP800Drbg.seedlens;
			IDictionary dictionary3 = HashSP800Drbg.seedlens;
			IDictionary dictionary4 = HashSP800Drbg.seedlens;
			IDictionary dictionary5 = HashSP800Drbg.seedlens;
			IDictionary dictionary6 = HashSP800Drbg.seedlens;
			IDictionary dictionary7 = HashSP800Drbg.seedlens;
		}

		// Token: 0x06009657 RID: 38487 RVA: 0x00215EEC File Offset: 0x002140EC
		[Token(Token = "0x6009657")]
		[Address(RVA = "0x1E43340", Offset = "0x1E41D40", VA = "0x181E43340")]
		public HashSP800Drbg(IDigest digest, int securityStrength, IEntropySource entropySource, byte[] personalizationString, byte[] nonce)
		{
			int num;
			do
			{
				base..ctor();
				this.mDigest = digest;
				this.mEntropySource = entropySource;
				this.mSecurityStrength = securityStrength;
				IDictionary dictionary = HashSP800Drbg.seedlens;
				num = 0;
			}
			while ("{il2cpp array field local12->}" != num);
			byte[] one = HashSP800Drbg.ONE;
			this.mSeedLength = one;
			byte[] entropy = this.GetEntropy();
			byte[][] array = new byte[3][];
			if (entropy != 0)
			{
			}
			array[0] = entropy;
			byte[] array2 = Arrays.ConcatenateAll(array);
			IDigest digest2 = this.mDigest;
			int num2 = this.mSeedLength;
			byte[] array3 = DrbgUtilities.HashDF(digest2, array2, num2);
			this.mV = array3;
			int num3 = array3.Length;
			num3++;
			byte[] array4 = new byte[num3];
			byte[] array5 = this.mV;
			int length = array5.Length;
			int num4 = 0;
			Array.Copy(array5, num4, array4, 1, length);
			int num5 = this.mSeedLength;
			byte[] array6 = DrbgUtilities.HashDF(this.mDigest, array4, num5);
			this.mC = array6;
			this.mReseedCounter = (long)((ulong)1L);
		}

		// Token: 0x170017F6 RID: 6134
		// (get) Token: 0x06009658 RID: 38488 RVA: 0x00215FEC File Offset: 0x002141EC
		[Token(Token = "0x170017F6")]
		public int BlockSize
		{
			[Token(Token = "0x6009658")]
			[Address(RVA = "0x1E437A0", Offset = "0x1E421A0", VA = "0x181E437A0", Slot = "4")]
			get
			{
				IDigest digest = this.mDigest;
				throw new NullReferenceException();
			}
		}

		// Token: 0x06009659 RID: 38489 RVA: 0x00216008 File Offset: 0x00214208
		[Token(Token = "0x6009659")]
		[Address(RVA = "0x1E426A0", Offset = "0x1E410A0", VA = "0x181E426A0", Slot = "5")]
		public int Generate(byte[] output, byte[] additionalInput, bool predictionResistant)
		{
			int length = output.Length;
			long num = this.mReseedCounter;
			if (predictionResistant)
			{
				this.Reseed(additionalInput);
			}
			if (additionalInput != 0)
			{
				byte[] array = this.mV;
				int num2 = additionalInput.Length;
				num2++;
				byte[] array2 = new byte[num2];
				array2[0] = (byte)((ulong)2L);
				byte[] array3 = this.mV;
				int length2 = array3.Length;
				int num3 = 0;
				uint num4;
				Array.Copy(array3, num3, array2, (int)num4, length2);
				int num5 = this.mV.Length;
				int length3 = additionalInput.Length;
				num5++;
				int num6 = 0;
				Array.Copy(additionalInput, num6, array2, num5, length3);
				byte[] array4 = this.Hash(array2);
				byte[] array5 = this.mV;
				this.AddTo(array5, array4);
			}
			byte[] array6 = this.mV;
			IDigest digest = this.mDigest;
			byte[] array7 = new byte[array6.Length];
			int length4 = array6.Length;
			int num7 = 0;
			int num8 = 0;
			Array.Copy(array6, num8, array7, num7, length4);
			byte[] array8 = new byte[additionalInput];
			IDigest digest2 = this.mDigest;
			byte[] array9 = new byte[array8];
			int i = 0;
			this.DoHash(array7, array9);
			int num9 = array9.Length;
			int num10 = array8.Length;
			int num11 = i * num9;
			num10 -= num11;
			if (num10 <= num9)
			{
				num9 = num10;
			}
			int num12 = 0;
			Array.Copy(array9, num12, array8, num11, num9);
			byte[] one = HashSP800Drbg.ONE;
			this.AddTo(array7, one);
			i++;
			while (i <= additionalInput)
			{
			}
			int num13 = this.mV.Length;
			num13++;
			byte[] array10 = new byte[num13];
			byte[] array11 = this.mV;
			int length5 = array11.Length;
			int num14 = 0;
			Array.Copy(array11, num14, array10, 1, length5);
			array10[0] = (byte)((ulong)3L);
			byte[] array12 = this.Hash(array10);
			byte[] array13 = this.mV;
			this.AddTo(array13, array12);
			byte[] array14 = this.mC;
			byte[] array15 = this.mV;
			this.AddTo(array15, array14);
			byte[] array16 = new byte[0];
			long num15 = this.mReseedCounter;
			array16[0] = (byte)num15;
			long num16 = this.mReseedCounter;
			array16[0] = (byte)num16;
			long num17 = this.mReseedCounter;
			array16[0] = (byte)num17;
			long num18 = this.mReseedCounter;
			array16[0] = (byte)num18;
			byte[] array17 = this.mV;
			this.AddTo(array17, array16);
			int num19 = 0;
			int length6 = output.Length;
			int num20 = 0;
			Array.Copy(array8, num20, output, num19, length6);
			return length;
		}

		// Token: 0x0600965A RID: 38490 RVA: 0x00216290 File Offset: 0x00214490
		[Token(Token = "0x600965A")]
		[Address(RVA = "0x1E42C00", Offset = "0x1E41600", VA = "0x181E42C00")]
		private byte[] GetEntropy()
		{
			IEntropySource entropySource = this.mEntropySource;
			int num = this.mSecurityStrength;
			num += 7;
			num += typeof(IEntropySource).TypeHandle;
			throw new NullReferenceException();
		}

		// Token: 0x0600965B RID: 38491 RVA: 0x002162BC File Offset: 0x002144BC
		[Token(Token = "0x600965B")]
		[Address(RVA = "0x1E42510", Offset = "0x1E40F10", VA = "0x181E42510")]
		private void AddTo(byte[] longer, byte[] shorter)
		{
			int length = shorter.Length;
			int num = 0;
			int num2 = longer.Length;
			int num3 = length - 1;
			num2 -= length;
			byte b;
			num += (int)b;
			byte b2;
			num += (int)b2;
			num3 = num2 - 1;
			byte b3;
			num += (int)b3;
		}

		// Token: 0x0600965C RID: 38492 RVA: 0x002162FC File Offset: 0x002144FC
		[Token(Token = "0x600965C")]
		[Address(RVA = "0x1E42D30", Offset = "0x1E41730", VA = "0x181E42D30", Slot = "6")]
		public void Reseed(byte[] additionalInput)
		{
			byte[] entropy = this.GetEntropy();
			byte[][] array = new byte[4][];
			byte[] one = HashSP800Drbg.ONE;
			if (one != 0)
			{
			}
			array[0] = one;
			byte[] array2 = this.mV;
			if (array2 != 0)
			{
			}
			array[1] = array2;
			if (entropy != 0)
			{
			}
			array[2] = entropy;
			if (additionalInput != 0)
			{
			}
			array[3] = additionalInput;
			byte[] array3 = Arrays.ConcatenateAll(array);
			IDigest digest = this.mDigest;
			int num = this.mSeedLength;
			byte[] array4 = DrbgUtilities.HashDF(digest, array3, num);
			this.mV = array4;
			int num2 = array4.Length;
			num2++;
			byte[] array5 = new byte[num2];
			array5[0] = (byte)((ulong)0L);
			byte[] array6 = this.mV;
			int length = array6.Length;
			int num3 = 0;
			Array.Copy(array6, num3, array5, 1, length);
			int num4 = this.mSeedLength;
			byte[] array7 = DrbgUtilities.HashDF(this.mDigest, array5, num4);
			this.mC = array7;
			this.mReseedCounter = (long)((ulong)1L);
		}

		// Token: 0x0600965D RID: 38493 RVA: 0x002163F8 File Offset: 0x002145F8
		[Token(Token = "0x600965D")]
		[Address(RVA = "0x1E42CA0", Offset = "0x1E416A0", VA = "0x181E42CA0")]
		private byte[] Hash(byte[] input)
		{
			IDigest digest = this.mDigest;
			byte[] array = new byte[0];
			this.DoHash(input, array);
			return array;
		}

		// Token: 0x0600965E RID: 38494 RVA: 0x00216424 File Offset: 0x00214624
		[Token(Token = "0x600965E")]
		[Address(RVA = "0x1E42600", Offset = "0x1E41000", VA = "0x181E42600")]
		private void DoHash(byte[] input, byte[] output)
		{
			IDigest digest = this.mDigest;
			int length = input.Length;
			IDigest digest2 = this.mDigest;
		}

		// Token: 0x0600965F RID: 38495 RVA: 0x0021644C File Offset: 0x0021464C
		[Token(Token = "0x600965F")]
		[Address(RVA = "0x1E437F0", Offset = "0x1E421F0", VA = "0x181E437F0")]
		private byte[] hashgen(byte[] input, int lengthInBits)
		{
			IDigest digest = this.mDigest;
			byte[] array = new byte[input.Length];
			int length = input.Length;
			int i = 0;
			int num = 0;
			int num2 = 0;
			Array.Copy(input, num2, array, num, length);
			byte[] array2 = new byte[lengthInBits];
			IDigest digest2 = this.mDigest;
			byte[] array3 = new byte[array2];
			this.DoHash(array, array3);
			int num3 = array3.Length;
			int num4 = array2.Length;
			int num5 = num3 * i;
			num4 -= num5;
			if (num4 <= num3)
			{
				num3 = num4;
			}
			int num6 = 0;
			Array.Copy(array3, num6, array2, num5, num3);
			byte[] one = HashSP800Drbg.ONE;
			this.AddTo(array, one);
			i++;
			while (i <= lengthInBits)
			{
			}
			return array2;
		}

		// Token: 0x04006347 RID: 25415
		[Token(Token = "0x4006347")]
		private static readonly byte[] ONE = new byte[] { (byte)((ulong)1L) };

		// Token: 0x04006348 RID: 25416
		[Token(Token = "0x4006348")]
		private static readonly long RESEED_MAX = (long)((ulong)140737488355328L);

		// Token: 0x04006349 RID: 25417
		[Token(Token = "0x4006349")]
		private static readonly int MAX_BITS_REQUEST;

		// Token: 0x0400634A RID: 25418
		[Token(Token = "0x400634A")]
		private static readonly IDictionary seedlens = Platform.CreateHashtable();

		// Token: 0x0400634B RID: 25419
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x10")]
		[Token(Token = "0x400634B")]
		private readonly IDigest mDigest;

		// Token: 0x0400634C RID: 25420
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x18")]
		[Token(Token = "0x400634C")]
		private readonly IEntropySource mEntropySource;

		// Token: 0x0400634D RID: 25421
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x20")]
		[Token(Token = "0x400634D")]
		private readonly int mSecurityStrength;

		// Token: 0x0400634E RID: 25422
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x24")]
		[Token(Token = "0x400634E")]
		private readonly int mSeedLength;

		// Token: 0x0400634F RID: 25423
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x400634F")]
		private byte[] mV;

		// Token: 0x04006350 RID: 25424
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x30")]
		[Token(Token = "0x4006350")]
		private byte[] mC;

		// Token: 0x04006351 RID: 25425
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x38")]
		[Token(Token = "0x4006351")]
		private long mReseedCounter;
	}
}