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This commit is contained in:
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: 0x02001CB6 RID: 7350
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[Token(Token = "0x2001CB6")]
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public class HashSP800Drbg : ISP80090Drbg
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{
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// Token: 0x0600B5FE RID: 46590 RVA: 0x00276654 File Offset: 0x00274854
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[Token(Token = "0x600B5FE")]
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[Address(RVA = "0x235E280", Offset = "0x235D280", VA = "0x18235E280")]
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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: 0x0600B5FF RID: 46591 RVA: 0x002766CC File Offset: 0x002748CC
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[Token(Token = "0x600B5FF")]
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[Address(RVA = "0x235E5B0", Offset = "0x235D5B0", VA = "0x18235E5B0")]
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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: 0x17001C94 RID: 7316
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// (get) Token: 0x0600B600 RID: 46592 RVA: 0x002767CC File Offset: 0x002749CC
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[Token(Token = "0x17001C94")]
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public int BlockSize
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{
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[Token(Token = "0x600B600")]
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[Address(RVA = "0x235EA10", Offset = "0x235DA10", VA = "0x18235EA10", 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: 0x0600B601 RID: 46593 RVA: 0x002767E8 File Offset: 0x002749E8
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[Token(Token = "0x600B601")]
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[Address(RVA = "0x235D910", Offset = "0x235C910", VA = "0x18235D910", 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: 0x0600B602 RID: 46594 RVA: 0x00276A70 File Offset: 0x00274C70
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[Token(Token = "0x600B602")]
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[Address(RVA = "0x235DE70", Offset = "0x235CE70", VA = "0x18235DE70")]
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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: 0x0600B603 RID: 46595 RVA: 0x00276A9C File Offset: 0x00274C9C
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[Token(Token = "0x600B603")]
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[Address(RVA = "0x235D780", Offset = "0x235C780", VA = "0x18235D780")]
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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: 0x0600B604 RID: 46596 RVA: 0x00276ADC File Offset: 0x00274CDC
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[Token(Token = "0x600B604")]
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[Address(RVA = "0x235DFA0", Offset = "0x235CFA0", VA = "0x18235DFA0", 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: 0x0600B605 RID: 46597 RVA: 0x00276BD8 File Offset: 0x00274DD8
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[Token(Token = "0x600B605")]
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[Address(RVA = "0x235DF10", Offset = "0x235CF10", VA = "0x18235DF10")]
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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: 0x0600B606 RID: 46598 RVA: 0x00276C04 File Offset: 0x00274E04
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[Token(Token = "0x600B606")]
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[Address(RVA = "0x235D870", Offset = "0x235C870", VA = "0x18235D870")]
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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: 0x0600B607 RID: 46599 RVA: 0x00276C2C File Offset: 0x00274E2C
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[Token(Token = "0x600B607")]
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[Address(RVA = "0x235EA60", Offset = "0x235DA60", VA = "0x18235EA60")]
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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: 0x04007343 RID: 29507
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[Token(Token = "0x4007343")]
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private static readonly byte[] ONE = new byte[] { (byte)((ulong)1L) };
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// Token: 0x04007344 RID: 29508
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[Token(Token = "0x4007344")]
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private static readonly long RESEED_MAX = (long)((ulong)140737488355328L);
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// Token: 0x04007345 RID: 29509
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[Token(Token = "0x4007345")]
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private static readonly int MAX_BITS_REQUEST;
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// Token: 0x04007346 RID: 29510
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[Token(Token = "0x4007346")]
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private static readonly IDictionary seedlens = Platform.CreateHashtable();
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// Token: 0x04007347 RID: 29511
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[FieldOffset(Offset = "0x10")]
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[Token(Token = "0x4007347")]
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private readonly IDigest mDigest;
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// Token: 0x04007348 RID: 29512
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[FieldOffset(Offset = "0x18")]
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[Token(Token = "0x4007348")]
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private readonly IEntropySource mEntropySource;
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// Token: 0x04007349 RID: 29513
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[FieldOffset(Offset = "0x20")]
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[Token(Token = "0x4007349")]
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private readonly int mSecurityStrength;
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// Token: 0x0400734A RID: 29514
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[FieldOffset(Offset = "0x24")]
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[Token(Token = "0x400734A")]
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private readonly int mSeedLength;
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// Token: 0x0400734B RID: 29515
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[FieldOffset(Offset = "0x28")]
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[Token(Token = "0x400734B")]
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private byte[] mV;
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// Token: 0x0400734C RID: 29516
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[FieldOffset(Offset = "0x30")]
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[Token(Token = "0x400734C")]
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private byte[] mC;
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// Token: 0x0400734D RID: 29517
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[FieldOffset(Offset = "0x38")]
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[Token(Token = "0x400734D")]
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private long mReseedCounter;
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}
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}
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