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using System;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Engines;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Macs;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Security;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities;
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using Cpp2IlInjected;
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using Hjg.Pngcs;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Tls
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{
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// Token: 0x02001B0A RID: 6922
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[Token(Token = "0x2001B0A")]
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public class Chacha20Poly1305 : TlsCipher
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{
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// Token: 0x0600AC2B RID: 44075 RVA: 0x002577E4 File Offset: 0x002559E4
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[Token(Token = "0x600AC2B")]
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[Address(RVA = "0x18AB980", Offset = "0x18AA780", VA = "0x1818AB980")]
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public Chacha20Poly1305(TlsContext context)
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{
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do
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{
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base..ctor();
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}
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while (!TlsUtilities.IsTlsV12(context));
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this.context = context;
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byte[] array = TlsUtilities.CalculateKeyBlock(context, 88);
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int num;
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KeyParameter keyParameter = new KeyParameter(array, num, 32);
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num = 0;
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KeyParameter keyParameter2 = new KeyParameter(array, 32, 32);
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byte[] array2 = Arrays.CopyOfRange(array, 64, 76);
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byte[] array3 = Arrays.CopyOfRange(array, 76, 88);
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ChaCha7539Engine chaCha7539Engine = new ChaCha7539Engine();
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this.encryptCipher = chaCha7539Engine;
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ChaCha7539Engine chaCha7539Engine2 = new ChaCha7539Engine();
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this.decryptCipher = chaCha7539Engine2;
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if (chaCha7539Engine2 == 0)
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{
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}
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this.encryptIV = array3;
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this.decryptIV = array2;
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ChaCha7539Engine chaCha7539Engine3 = this.encryptCipher;
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byte[] array4 = this.encryptIV;
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ParametersWithIV parametersWithIV = new ParametersWithIV(keyParameter2, array4);
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chaCha7539Engine3.Reset();
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ChaCha7539Engine chaCha7539Engine4 = this.decryptCipher;
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byte[] array5 = this.decryptIV;
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ParametersWithIV parametersWithIV2 = new ParametersWithIV(keyParameter, array5);
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string algorithmName = ((IStreamCipher)chaCha7539Engine4).AlgorithmName;
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}
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// Token: 0x0600AC2C RID: 44076 RVA: 0x0000220F File Offset: 0x0000040F
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[Token(Token = "0x600AC2C")]
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[Address(RVA = "0x18AB670", Offset = "0x18AA470", VA = "0x1818AB670", Slot = "7")]
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public virtual int GetPlaintextLimit(int ciphertextLimit)
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{
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throw new AnalysisFailedException("CPP2IL failed to recover any usable IL for this method.");
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}
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// Token: 0x0600AC2D RID: 44077 RVA: 0x002578BC File Offset: 0x00255ABC
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[Token(Token = "0x600AC2D")]
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[Address(RVA = "0x18AB2A0", Offset = "0x18AA0A0", VA = "0x1818AB2A0", Slot = "8")]
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public virtual byte[] EncodePlaintext(long seqNo, byte type, byte[] plaintext, int offset, int len)
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{
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byte[] array = this.encryptIV;
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byte[] array2 = new byte[this.encryptCipher];
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this.encryptCipher.AdvanceCounter();
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return array2;
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}
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// Token: 0x0600AC2E RID: 44078 RVA: 0x002578F0 File Offset: 0x00255AF0
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[Token(Token = "0x600AC2E")]
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[Address(RVA = "0x18AB090", Offset = "0x18A9E90", VA = "0x1818AB090", Slot = "9")]
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public virtual byte[] DecodeCiphertext(long seqNo, byte type, byte[] ciphertext, int offset, int len)
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{
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bool flag;
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do
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{
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byte[] array = this.decryptIV;
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}
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while (!flag);
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byte[] array3;
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byte[] array2 = new byte[array3];
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this.decryptCipher.AdvanceCounter();
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return array2;
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}
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// Token: 0x0600AC2F RID: 44079 RVA: 0x00257920 File Offset: 0x00255B20
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[Token(Token = "0x600AC2F")]
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[Address(RVA = "0x18AB680", Offset = "0x18AA480", VA = "0x1818AB680", Slot = "10")]
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protected virtual KeyParameter InitRecord(IStreamCipher cipher, bool forEncryption, long seqNo, byte[] iv)
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{
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int num = 0;
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KeyParameter keyParameter;
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if (num < keyParameter)
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{
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num += num;
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num++;
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}
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throw new NullReferenceException();
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}
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// Token: 0x0600AC30 RID: 44080 RVA: 0x00257940 File Offset: 0x00255B40
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[Token(Token = "0x600AC30")]
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[Address(RVA = "0x18AAE60", Offset = "0x18A9C60", VA = "0x1818AAE60", Slot = "11")]
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protected virtual byte[] CalculateNonce(long seqNo, byte[] iv)
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{
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byte[] array = new byte[12];
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TlsUtilities.WriteUint64(seqNo, array, 4);
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int num = 0;
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num++;
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return array;
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}
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// Token: 0x0600AC31 RID: 44081 RVA: 0x0025796C File Offset: 0x00255B6C
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[Token(Token = "0x600AC31")]
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[Address(RVA = "0x18AB410", Offset = "0x18AA210", VA = "0x1818AB410", Slot = "12")]
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protected virtual KeyParameter GenerateRecordMacKey(IStreamCipher cipher)
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{
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byte[] array = new byte[64];
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int num = 0;
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num += num;
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num++;
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int num2;
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uint num3;
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KeyParameter keyParameter = new KeyParameter(array, num2, (int)num3);
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num2 = 0;
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int num4 = 0;
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Arrays.Fill(array, (byte)num4);
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return keyParameter;
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}
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// Token: 0x0600AC32 RID: 44082 RVA: 0x002579B4 File Offset: 0x00255BB4
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[Token(Token = "0x600AC32")]
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[Address(RVA = "0x18AAF40", Offset = "0x18A9D40", VA = "0x1818AAF40", Slot = "13")]
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protected virtual byte[] CalculateRecordMac(KeyParameter macKey, byte[] additionalData, byte[] buf, int off, int len)
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{
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Poly1305 poly = new Poly1305();
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int length = additionalData.Length;
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return MacUtilities.DoFinal(poly);
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}
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// Token: 0x0600AC33 RID: 44083 RVA: 0x002579DC File Offset: 0x00255BDC
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[Token(Token = "0x600AC33")]
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[Address(RVA = "0x18AB7C0", Offset = "0x18AA5C0", VA = "0x1818AB7C0", Slot = "14")]
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protected virtual void UpdateRecordMacLength(IMac mac, int len)
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{
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int length = Pack.UInt64_To_LE((ulong)len).Length;
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}
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// Token: 0x0600AC34 RID: 44084 RVA: 0x002579FC File Offset: 0x00255BFC
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[Token(Token = "0x600AC34")]
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[Address(RVA = "0x18AB840", Offset = "0x18AA640", VA = "0x1818AB840", Slot = "15")]
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protected virtual void UpdateRecordMacText(IMac mac, byte[] buf, int off, int len)
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{
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if (mac < 0)
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{
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}
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}
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// Token: 0x0600AC35 RID: 44085 RVA: 0x00257A14 File Offset: 0x00255C14
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[Token(Token = "0x600AC35")]
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[Address(RVA = "0x18AB570", Offset = "0x18AA370", VA = "0x1818AB570", Slot = "16")]
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protected virtual byte[] GetAdditionalData(long seqNo, byte type, int len)
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{
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byte[] array = new byte[13];
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int num = 0;
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TlsUtilities.WriteUint64(seqNo, array, num);
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TlsUtilities.WriteUint8(type, array, 8);
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TlsContext tlsContext = this.context;
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PngHelperInternal.WriteInt2tobytes(len, array, 11);
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return array;
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}
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// Token: 0x04006D17 RID: 27927
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[Token(Token = "0x4006D17")]
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private static readonly byte[] Zeroes = new byte[15];
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// Token: 0x04006D18 RID: 27928
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[FieldOffset(Offset = "0x10")]
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[Token(Token = "0x4006D18")]
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protected readonly TlsContext context;
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// Token: 0x04006D19 RID: 27929
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[FieldOffset(Offset = "0x18")]
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[Token(Token = "0x4006D19")]
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protected readonly ChaCha7539Engine encryptCipher;
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// Token: 0x04006D1A RID: 27930
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[FieldOffset(Offset = "0x20")]
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[Token(Token = "0x4006D1A")]
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protected readonly ChaCha7539Engine decryptCipher;
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// Token: 0x04006D1B RID: 27931
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[FieldOffset(Offset = "0x28")]
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[Token(Token = "0x4006D1B")]
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protected readonly byte[] encryptIV;
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// Token: 0x04006D1C RID: 27932
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[FieldOffset(Offset = "0x30")]
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[Token(Token = "0x4006D1C")]
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protected readonly byte[] decryptIV;
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}
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}
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