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niko
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using System;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
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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: 0x02001BD5 RID: 7125
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[Token(Token = "0x2001BD5")]
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public class HMacSP800Drbg : ISP80090Drbg
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{
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// Token: 0x0600B228 RID: 45608 RVA: 0x0026D0D4 File Offset: 0x0026B2D4
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[Token(Token = "0x600B228")]
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[Address(RVA = "0x1899760", Offset = "0x1898560", VA = "0x181899760")]
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public HMacSP800Drbg(IMac hMac, int securityStrength, IEntropySource entropySource, byte[] personalizationString, byte[] nonce)
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{
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this.mHMac = hMac;
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this.mSecurityStrength = securityStrength;
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this.mEntropySource = entropySource;
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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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byte[] array3 = new byte[array2];
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this.mK = array3;
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byte[] array4 = new byte[array3.Length];
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this.mV = array4;
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int num = 0;
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this.hmac_DRBG_Update_Func(array2, (byte)num);
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if (array2 != 0)
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{
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}
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this.mReseedCounter = (long)((ulong)1L);
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}
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// Token: 0x0600B229 RID: 45609 RVA: 0x0026D170 File Offset: 0x0026B370
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[Token(Token = "0x600B229")]
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[Address(RVA = "0x1899D30", Offset = "0x1898B30", VA = "0x181899D30")]
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private void hmac_DRBG_Update(byte[] seedMaterial)
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{
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int num = 0;
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this.hmac_DRBG_Update_Func(seedMaterial, (byte)num);
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if (seedMaterial != 0)
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{
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}
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}
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// Token: 0x0600B22A RID: 45610 RVA: 0x0026D18C File Offset: 0x0026B38C
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[Token(Token = "0x600B22A")]
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[Address(RVA = "0x1899B40", Offset = "0x1898940", VA = "0x181899B40")]
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private void hmac_DRBG_Update_Func(byte[] seedMaterial, byte vValue)
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{
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IMac mac = this.mHMac;
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KeyParameter keyParameter = new KeyParameter(this.mK);
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byte[] array = this.mV;
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IMac mac2 = this.mHMac;
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int length = array.Length;
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IMac mac3 = this.mHMac;
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if (seedMaterial != 0)
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{
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IMac mac4 = this.mHMac;
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int length2 = seedMaterial.Length;
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}
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IMac mac5 = this.mHMac;
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IMac mac6 = this.mHMac;
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KeyParameter keyParameter2 = new KeyParameter(this.mK);
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byte[] array2 = this.mV;
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IMac mac7 = this.mHMac;
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int length3 = array2.Length;
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IMac mac8 = this.mHMac;
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}
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// Token: 0x17001BF6 RID: 7158
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// (get) Token: 0x0600B22B RID: 45611 RVA: 0x0026D228 File Offset: 0x0026B428
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[Token(Token = "0x17001BF6")]
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public int BlockSize
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{
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[Token(Token = "0x600B22B")]
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[Address(RVA = "0x1899B20", Offset = "0x1898920", VA = "0x181899B20", Slot = "4")]
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get
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{
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return this.mV.Length;
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}
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}
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// Token: 0x0600B22C RID: 45612 RVA: 0x0026D248 File Offset: 0x0026B448
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[Token(Token = "0x600B22C")]
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[Address(RVA = "0x1899070", Offset = "0x1897E70", VA = "0x181899070", 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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byte[] array = Arrays.Concatenate(this.GetEntropy(), additionalInput);
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int num2 = 0;
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this.hmac_DRBG_Update_Func(array, (byte)num2);
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if (array != 0)
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{
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ulong num3;
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this.hmac_DRBG_Update_Func(array, (byte)num3);
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}
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this.mReseedCounter = (long)((ulong)1L);
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}
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if (additionalInput != 0)
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{
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int num4 = 0;
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this.hmac_DRBG_Update_Func(additionalInput, (byte)num4);
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ulong num5;
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this.hmac_DRBG_Update_Func(additionalInput, (byte)num5);
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}
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byte[] array2 = new byte[output.Length];
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byte[] array3 = this.mV;
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int length2 = output.Length;
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IMac mac = this.mHMac;
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KeyParameter keyParameter = new KeyParameter(this.mK);
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int num6 = 0;
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int num10;
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if (length2 > 0)
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{
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byte[] array4 = this.mV;
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IMac mac2 = this.mHMac;
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int num7 = 0;
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if (num7 < mac)
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{
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num7 += num7;
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num7++;
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}
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int num8 = 0;
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IMac mac3 = this.mHMac;
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int num9 = 0;
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if (num9 < num8)
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{
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num9 += num9;
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num9++;
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}
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byte[] array5 = this.mV;
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num10 = array5.Length;
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int num11 = num10 * num6;
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int num12 = 0;
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Array.Copy(array5, num12, array2, num11, num10);
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num6++;
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}
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num10 = this.mV.Length;
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if (num10 * length2 < array2.Length)
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{
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IMac mac4 = this.mHMac;
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IMac mac5 = this.mHMac;
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byte[] array6 = this.mV;
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int length3 = array6.Length;
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int num13 = array2.Length;
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int num14 = 0;
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int num15 = length3 * length2;
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num13 -= num15;
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Array.Copy(array6, num14, array2, num15, num13);
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}
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int num16 = 0;
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this.hmac_DRBG_Update_Func(additionalInput, (byte)num16);
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if (additionalInput != 0)
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{
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ulong num17;
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this.hmac_DRBG_Update_Func(additionalInput, (byte)num17);
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}
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int num18 = 0;
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int length4 = output.Length;
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int num19 = 0;
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Array.Copy(array2, num19, output, num18, length4);
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return length;
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}
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// Token: 0x0600B22D RID: 45613 RVA: 0x0026D418 File Offset: 0x0026B618
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[Token(Token = "0x600B22D")]
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[Address(RVA = "0x1899650", Offset = "0x1898450", VA = "0x181899650", Slot = "6")]
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public void Reseed(byte[] additionalInput)
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{
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byte[] array = Arrays.Concatenate(this.GetEntropy(), additionalInput);
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int num = 0;
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this.hmac_DRBG_Update_Func(array, (byte)num);
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if (array != 0)
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{
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}
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this.mReseedCounter = (long)((ulong)1L);
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}
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// Token: 0x0600B22E RID: 45614 RVA: 0x0026D44C File Offset: 0x0026B64C
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[Token(Token = "0x600B22E")]
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[Address(RVA = "0x18995B0", Offset = "0x18983B0", VA = "0x1818995B0")]
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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: 0x04007182 RID: 29058
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[Token(Token = "0x4007182")]
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private static readonly long RESEED_MAX = (long)((ulong)140737488355328L);
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// Token: 0x04007183 RID: 29059
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[Token(Token = "0x4007183")]
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private static readonly int MAX_BITS_REQUEST;
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// Token: 0x04007184 RID: 29060
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[FieldOffset(Offset = "0x10")]
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[Token(Token = "0x4007184")]
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private readonly byte[] mK;
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// Token: 0x04007185 RID: 29061
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[FieldOffset(Offset = "0x18")]
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[Token(Token = "0x4007185")]
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private readonly byte[] mV;
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// Token: 0x04007186 RID: 29062
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[FieldOffset(Offset = "0x20")]
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[Token(Token = "0x4007186")]
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private readonly IEntropySource mEntropySource;
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// Token: 0x04007187 RID: 29063
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[FieldOffset(Offset = "0x28")]
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[Token(Token = "0x4007187")]
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private readonly IMac mHMac;
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// Token: 0x04007188 RID: 29064
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[FieldOffset(Offset = "0x30")]
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[Token(Token = "0x4007188")]
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private readonly int mSecurityStrength;
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// Token: 0x04007189 RID: 29065
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[FieldOffset(Offset = "0x38")]
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[Token(Token = "0x4007189")]
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private long mReseedCounter;
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}
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}
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