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niko
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using System;
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using System.Collections;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities;
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using Cpp2IlInjected;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Prng.Drbg
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{
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// Token: 0x02001BD6 RID: 7126
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[Token(Token = "0x2001BD6")]
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public class HashSP800Drbg : ISP80090Drbg
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{
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// Token: 0x0600B230 RID: 45616 RVA: 0x0026D494 File Offset: 0x0026B694
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[Token(Token = "0x600B230")]
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[Address(RVA = "0x189A910", Offset = "0x1899710", VA = "0x18189A910")]
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static HashSP800Drbg()
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{
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IDictionary dictionary = HashSP800Drbg.seedlens;
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IDictionary dictionary2 = HashSP800Drbg.seedlens;
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IDictionary dictionary3 = HashSP800Drbg.seedlens;
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IDictionary dictionary4 = HashSP800Drbg.seedlens;
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IDictionary dictionary5 = HashSP800Drbg.seedlens;
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IDictionary dictionary6 = HashSP800Drbg.seedlens;
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IDictionary dictionary7 = HashSP800Drbg.seedlens;
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}
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// Token: 0x0600B231 RID: 45617 RVA: 0x0026D50C File Offset: 0x0026B70C
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[Token(Token = "0x600B231")]
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[Address(RVA = "0x189AC40", Offset = "0x1899A40", VA = "0x18189AC40")]
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public HashSP800Drbg(IDigest digest, int securityStrength, IEntropySource entropySource, byte[] personalizationString, byte[] nonce)
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{
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int num;
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do
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{
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base..ctor();
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this.mDigest = digest;
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this.mEntropySource = entropySource;
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this.mSecurityStrength = securityStrength;
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IDictionary dictionary = HashSP800Drbg.seedlens;
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num = 0;
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}
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while ("{il2cpp array field local12->}" != num);
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byte[] one = HashSP800Drbg.ONE;
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this.mSeedLength = one;
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byte[] entropy = this.GetEntropy();
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byte[][] array = new byte[3][];
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if (entropy != 0)
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{
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}
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array[0] = entropy;
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byte[] array2 = Arrays.ConcatenateAll(array);
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IDigest digest2 = this.mDigest;
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int num2 = this.mSeedLength;
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byte[] array3 = DrbgUtilities.HashDF(digest2, array2, num2);
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this.mV = array3;
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int num3 = array3.Length;
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num3++;
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byte[] array4 = new byte[num3];
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byte[] array5 = this.mV;
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int length = array5.Length;
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int num4 = 0;
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Array.Copy(array5, num4, array4, 1, length);
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int num5 = this.mSeedLength;
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byte[] array6 = DrbgUtilities.HashDF(this.mDigest, array4, num5);
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this.mC = array6;
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this.mReseedCounter = (long)((ulong)1L);
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}
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// Token: 0x17001BF7 RID: 7159
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// (get) Token: 0x0600B232 RID: 45618 RVA: 0x0026D60C File Offset: 0x0026B80C
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[Token(Token = "0x17001BF7")]
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public int BlockSize
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{
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[Token(Token = "0x600B232")]
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[Address(RVA = "0x189B0A0", Offset = "0x1899EA0", VA = "0x18189B0A0", Slot = "4")]
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get
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{
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IDigest digest = this.mDigest;
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throw new NullReferenceException();
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}
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}
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// Token: 0x0600B233 RID: 45619 RVA: 0x0026D628 File Offset: 0x0026B828
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[Token(Token = "0x600B233")]
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[Address(RVA = "0x1899FA0", Offset = "0x1898DA0", VA = "0x181899FA0", Slot = "5")]
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public int Generate(byte[] output, byte[] additionalInput, bool predictionResistant)
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{
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int length = output.Length;
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long num = this.mReseedCounter;
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if (predictionResistant)
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{
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this.Reseed(additionalInput);
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}
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if (additionalInput != 0)
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{
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byte[] array = this.mV;
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int num2 = additionalInput.Length;
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num2++;
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byte[] array2 = new byte[num2];
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array2[0] = (byte)((ulong)2L);
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byte[] array3 = this.mV;
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int length2 = array3.Length;
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int num3 = 0;
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uint num4;
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Array.Copy(array3, num3, array2, (int)num4, length2);
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int num5 = this.mV.Length;
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int length3 = additionalInput.Length;
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num5++;
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int num6 = 0;
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Array.Copy(additionalInput, num6, array2, num5, length3);
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byte[] array4 = this.Hash(array2);
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byte[] array5 = this.mV;
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this.AddTo(array5, array4);
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}
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byte[] array6 = this.mV;
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IDigest digest = this.mDigest;
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byte[] array7 = new byte[array6.Length];
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int length4 = array6.Length;
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int num7 = 0;
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int num8 = 0;
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Array.Copy(array6, num8, array7, num7, length4);
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byte[] array8 = new byte[additionalInput];
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IDigest digest2 = this.mDigest;
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byte[] array9 = new byte[array8];
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int i = 0;
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this.DoHash(array7, array9);
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int num9 = array9.Length;
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int num10 = array8.Length;
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int num11 = i * num9;
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num10 -= num11;
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if (num10 <= num9)
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{
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num9 = num10;
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}
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int num12 = 0;
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Array.Copy(array9, num12, array8, num11, num9);
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byte[] one = HashSP800Drbg.ONE;
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this.AddTo(array7, one);
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i++;
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while (i <= additionalInput)
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{
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}
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int num13 = this.mV.Length;
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num13++;
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byte[] array10 = new byte[num13];
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byte[] array11 = this.mV;
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int length5 = array11.Length;
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int num14 = 0;
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Array.Copy(array11, num14, array10, 1, length5);
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array10[0] = (byte)((ulong)3L);
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byte[] array12 = this.Hash(array10);
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byte[] array13 = this.mV;
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this.AddTo(array13, array12);
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byte[] array14 = this.mC;
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byte[] array15 = this.mV;
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this.AddTo(array15, array14);
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byte[] array16 = new byte[0];
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long num15 = this.mReseedCounter;
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array16[0] = (byte)num15;
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long num16 = this.mReseedCounter;
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array16[0] = (byte)num16;
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long num17 = this.mReseedCounter;
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array16[0] = (byte)num17;
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long num18 = this.mReseedCounter;
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array16[0] = (byte)num18;
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byte[] array17 = this.mV;
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this.AddTo(array17, array16);
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int num19 = 0;
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int length6 = output.Length;
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int num20 = 0;
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Array.Copy(array8, num20, output, num19, length6);
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return length;
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}
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// Token: 0x0600B234 RID: 45620 RVA: 0x0026D8B0 File Offset: 0x0026BAB0
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[Token(Token = "0x600B234")]
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[Address(RVA = "0x189A500", Offset = "0x1899300", VA = "0x18189A500")]
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private byte[] GetEntropy()
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{
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IEntropySource entropySource = this.mEntropySource;
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int num = this.mSecurityStrength;
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num += 7;
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num += typeof(IEntropySource).TypeHandle;
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throw new NullReferenceException();
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}
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// Token: 0x0600B235 RID: 45621 RVA: 0x0026D8DC File Offset: 0x0026BADC
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[Token(Token = "0x600B235")]
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[Address(RVA = "0x1899E10", Offset = "0x1898C10", VA = "0x181899E10")]
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private void AddTo(byte[] longer, byte[] shorter)
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{
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int length = shorter.Length;
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int num = 0;
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int num2 = longer.Length;
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int num3 = length - 1;
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num2 -= length;
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byte b;
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num += (int)b;
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byte b2;
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num += (int)b2;
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num3 = num2 - 1;
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byte b3;
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num += (int)b3;
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}
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// Token: 0x0600B236 RID: 45622 RVA: 0x0026D91C File Offset: 0x0026BB1C
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[Token(Token = "0x600B236")]
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[Address(RVA = "0x189A630", Offset = "0x1899430", VA = "0x18189A630", Slot = "6")]
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public void Reseed(byte[] additionalInput)
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{
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byte[] entropy = this.GetEntropy();
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byte[][] array = new byte[4][];
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byte[] one = HashSP800Drbg.ONE;
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if (one != 0)
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{
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}
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array[0] = one;
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byte[] array2 = this.mV;
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if (array2 != 0)
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{
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}
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array[1] = array2;
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if (entropy != 0)
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{
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}
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array[2] = entropy;
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if (additionalInput != 0)
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{
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}
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array[3] = additionalInput;
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byte[] array3 = Arrays.ConcatenateAll(array);
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IDigest digest = this.mDigest;
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int num = this.mSeedLength;
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byte[] array4 = DrbgUtilities.HashDF(digest, array3, num);
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this.mV = array4;
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int num2 = array4.Length;
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num2++;
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byte[] array5 = new byte[num2];
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array5[0] = (byte)((ulong)0L);
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byte[] array6 = this.mV;
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int length = array6.Length;
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int num3 = 0;
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Array.Copy(array6, num3, array5, 1, length);
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int num4 = this.mSeedLength;
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byte[] array7 = DrbgUtilities.HashDF(this.mDigest, array5, num4);
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this.mC = array7;
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this.mReseedCounter = (long)((ulong)1L);
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}
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// Token: 0x0600B237 RID: 45623 RVA: 0x0026DA18 File Offset: 0x0026BC18
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[Token(Token = "0x600B237")]
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[Address(RVA = "0x189A5A0", Offset = "0x18993A0", VA = "0x18189A5A0")]
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private byte[] Hash(byte[] input)
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{
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IDigest digest = this.mDigest;
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byte[] array = new byte[0];
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this.DoHash(input, array);
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return array;
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}
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// Token: 0x0600B238 RID: 45624 RVA: 0x0026DA44 File Offset: 0x0026BC44
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[Token(Token = "0x600B238")]
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[Address(RVA = "0x1899F00", Offset = "0x1898D00", VA = "0x181899F00")]
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private void DoHash(byte[] input, byte[] output)
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{
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IDigest digest = this.mDigest;
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int length = input.Length;
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IDigest digest2 = this.mDigest;
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}
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// Token: 0x0600B239 RID: 45625 RVA: 0x0026DA6C File Offset: 0x0026BC6C
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[Token(Token = "0x600B239")]
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[Address(RVA = "0x189B0F0", Offset = "0x1899EF0", VA = "0x18189B0F0")]
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private byte[] hashgen(byte[] input, int lengthInBits)
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{
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IDigest digest = this.mDigest;
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byte[] array = new byte[input.Length];
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int length = input.Length;
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int i = 0;
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int num = 0;
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int num2 = 0;
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Array.Copy(input, num2, array, num, length);
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byte[] array2 = new byte[lengthInBits];
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IDigest digest2 = this.mDigest;
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byte[] array3 = new byte[array2];
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this.DoHash(array, array3);
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int num3 = array3.Length;
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int num4 = array2.Length;
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int num5 = num3 * i;
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num4 -= num5;
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if (num4 <= num3)
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{
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num3 = num4;
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}
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int num6 = 0;
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Array.Copy(array3, num6, array2, num5, num3);
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byte[] one = HashSP800Drbg.ONE;
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this.AddTo(array, one);
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i++;
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while (i <= lengthInBits)
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{
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}
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return array2;
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}
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// Token: 0x0400718A RID: 29066
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[Token(Token = "0x400718A")]
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private static readonly byte[] ONE = new byte[] { (byte)((ulong)1L) };
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// Token: 0x0400718B RID: 29067
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[Token(Token = "0x400718B")]
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private static readonly long RESEED_MAX = (long)((ulong)140737488355328L);
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// Token: 0x0400718C RID: 29068
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[Token(Token = "0x400718C")]
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private static readonly int MAX_BITS_REQUEST;
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// Token: 0x0400718D RID: 29069
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[Token(Token = "0x400718D")]
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private static readonly IDictionary seedlens = Platform.CreateHashtable();
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// Token: 0x0400718E RID: 29070
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[FieldOffset(Offset = "0x10")]
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[Token(Token = "0x400718E")]
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private readonly IDigest mDigest;
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// Token: 0x0400718F RID: 29071
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[FieldOffset(Offset = "0x18")]
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[Token(Token = "0x400718F")]
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private readonly IEntropySource mEntropySource;
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// Token: 0x04007190 RID: 29072
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[FieldOffset(Offset = "0x20")]
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[Token(Token = "0x4007190")]
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private readonly int mSecurityStrength;
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// Token: 0x04007191 RID: 29073
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[FieldOffset(Offset = "0x24")]
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[Token(Token = "0x4007191")]
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private readonly int mSeedLength;
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// Token: 0x04007192 RID: 29074
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[FieldOffset(Offset = "0x28")]
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[Token(Token = "0x4007192")]
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private byte[] mV;
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// Token: 0x04007193 RID: 29075
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[FieldOffset(Offset = "0x30")]
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[Token(Token = "0x4007193")]
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private byte[] mC;
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// Token: 0x04007194 RID: 29076
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[FieldOffset(Offset = "0x38")]
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[Token(Token = "0x4007194")]
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private long mReseedCounter;
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}
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}
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