499 lines
15 KiB
C#
499 lines
15 KiB
C#
// <copyright file="PacketTwisterOfGuildKick.cs" company="MUnique">
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// Licensed under the MIT License. See LICENSE file in the project root for full license information.
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// </copyright>
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namespace MUnique.OpenMU.Network.PacketTwister;
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/// <summary>
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/// PacketTwister implementation for packets of 'GuildKick' type.
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/// </summary>
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internal class PacketTwisterOfGuildKick : IPacketTwister
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{
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/// <inheritdoc/>
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public void Twist(Span<byte> data)
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{
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if (data.Length >= 4)
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{
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if (data.Length >= 8)
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{
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if (data.Length >= 16)
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{
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if (data.Length >= 32)
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{
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data[16] ^= 0xD9;
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var v24 = (byte)((data[28] >> 7) & 1);
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if (((data[28] >> 1) & 1) != 0)
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{
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data[28] |= 0x80;
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}
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else
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{
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data[28] &= 0x7F;
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}
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if (v24 != 0)
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{
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data[28] |= 2;
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}
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else
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{
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data[28] &= 0xFD;
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}
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var v18 = data[2];
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data[2] = data[4];
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data[4] = v18;
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var v23 = (byte)((data[5] >> 3) & 1);
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if (((data[5] >> 6) & 1) != 0)
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{
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data[5] |= 8;
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}
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else
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{
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data[5] &= 0xF7;
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}
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if (v23 != 0)
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{
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data[5] |= 0x40;
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}
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else
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{
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data[5] &= 0xBF;
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}
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var v19 = (byte)(data[18] >> 6);
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data[18] *= 4;
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data[18] |= v19;
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var v20 = data[16];
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data[16] = data[0];
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data[0] = v20;
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data[10] ^= 0x2B;
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var v22 = (byte)((data[24] >> 2) & 1);
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if (((data[24] >> 2) & 1) != 0)
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{
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data[24] |= 4;
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}
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else
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{
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data[24] &= 0xFB;
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}
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if (v22 != 0)
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{
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data[24] |= 4;
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}
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else
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{
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data[24] &= 0xFB;
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}
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var v21 = (byte)(data[27] >> 1);
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data[27] <<= 7;
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data[27] |= v21;
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}
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else
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{
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var v12 = (byte)(data[9] >> 7);
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data[9] *= 2;
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data[9] |= v12;
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var v13 = data[6];
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data[6] = data[7];
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data[7] = v13;
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var v14 = data[9];
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data[9] = data[14];
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data[14] = v14;
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var v15 = data[1];
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data[1] = data[12];
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data[12] = v15;
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var v25 = (byte)((data[0] >> 7) & 1);
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if (((data[0] >> 1) & 1) != 0)
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{
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data[0] |= 0x80;
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}
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else
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{
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data[0] &= 0x7F;
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}
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if (v25 != 0)
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{
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data[0] |= 2;
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}
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else
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{
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data[0] &= 0xFD;
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}
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data[6] ^= 0x8D;
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data[12] ^= 0x85;
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data[11] ^= 0xCC;
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var v16 = (byte)(data[9] >> 4);
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data[9] *= 16;
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data[9] |= v16;
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var v17 = data[5];
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data[5] = data[3];
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data[3] = v17;
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}
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}
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else
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{
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var v6 = data[6];
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data[6] = data[6];
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data[6] = v6;
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var v7 = data[0];
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data[0] = data[4];
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data[4] = v7;
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data[5] ^= 0xAC;
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var v2 = (byte)((data[5] >> 2) & 1);
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if (((data[5] >> 5) & 1) != 0)
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{
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data[5] |= 4;
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}
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else
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{
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data[5] &= 0xFB;
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}
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if (v2 != 0)
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{
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data[5] |= 0x20;
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}
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else
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{
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data[5] &= 0xDF;
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}
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var v8 = data[7];
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data[7] = data[0];
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data[0] = v8;
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data[4] ^= 0xE5;
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var v9 = data[6];
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data[6] = data[0];
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data[0] = v9;
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data[5] ^= 0xD9;
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var v28 = (byte)((data[6] >> 4) & 1);
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if (((data[6] >> 4) & 1) != 0)
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{
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data[6] |= 0x10;
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}
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else
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{
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data[6] &= 0xEF;
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}
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if (v28 != 0)
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{
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data[6] |= 0x10;
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}
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else
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{
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data[6] &= 0xEF;
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}
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var v27 = (byte)((data[1] >> 2) & 1);
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if (((data[1] >> 4) & 1) != 0)
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{
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data[1] |= 4;
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}
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else
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{
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data[1] &= 0xFB;
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}
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if (v27 != 0)
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{
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data[1] |= 0x10;
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}
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else
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{
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data[1] &= 0xEF;
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}
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var v26 = (byte)((data[4] >> 5) & 1);
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if (((data[4] >> 1) & 1) != 0)
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{
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data[4] |= 0x20;
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}
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else
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{
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data[4] &= 0xDF;
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}
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if (v26 != 0)
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{
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data[4] |= 2;
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}
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else
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{
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data[4] &= 0xFD;
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}
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var v10 = (byte)(data[4] >> 6);
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data[4] *= 4;
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data[4] |= v10;
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var v11 = data[7];
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data[7] = data[2];
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data[2] = v11;
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}
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}
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else
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{
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var v3 = (byte)(data[2] >> 1);
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data[2] <<= 7;
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data[2] |= v3;
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data[2] ^= 0x71;
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var v4 = (byte)(data[0] >> 6);
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data[0] *= 4;
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data[0] |= v4;
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var v5 = data[1];
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data[1] = data[3];
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data[3] = v5;
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}
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}
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}
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/// <inheritdoc/>
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public void Correct(Span<byte> data)
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{
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if (data.Length >= 4)
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{
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if (data.Length >= 8)
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{
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if (data.Length >= 16)
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{
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if (data.Length >= 32)
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{
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var v18 = (byte)(data[27] >> 7);
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data[27] *= 2;
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data[27] |= v18;
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var v24 = (byte)((data[24] >> 2) & 1);
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if (((data[24] >> 2) & 1) != 0)
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{
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data[24] |= 4;
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}
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else
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{
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data[24] &= 0xFB;
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}
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if (v24 != 0)
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{
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data[24] |= 4;
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}
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else
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{
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data[24] &= 0xFB;
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}
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data[10] ^= 0x2B;
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var v19 = data[16];
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data[16] = data[0];
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data[0] = v19;
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var v20 = (byte)(data[18] >> 2);
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data[18] <<= 6;
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data[18] |= v20;
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var v23 = (byte)((data[5] >> 3) & 1);
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if (((data[5] >> 6) & 1) != 0)
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{
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data[5] |= 8;
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}
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else
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{
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data[5] &= 0xF7;
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}
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if (v23 != 0)
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{
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data[5] |= 0x40;
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}
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else
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{
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data[5] &= 0xBF;
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}
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var v21 = data[2];
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data[2] = data[4];
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data[4] = v21;
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var v22 = (byte)((data[28] >> 7) & 1);
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if (((data[28] >> 1) & 1) != 0)
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{
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data[28] |= 0x80;
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}
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else
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{
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data[28] &= 0x7F;
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}
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if (v22 != 0)
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{
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data[28] |= 2;
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}
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else
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{
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data[28] &= 0xFD;
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}
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data[16] ^= 0xD9;
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}
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else
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{
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var v12 = data[5];
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data[5] = data[3];
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data[3] = v12;
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var v13 = (byte)(data[9] >> 4);
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data[9] *= 16;
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data[9] |= v13;
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data[11] ^= 0xCC;
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data[12] ^= 0x85;
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data[6] ^= 0x8D;
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var v25 = (byte)((data[0] >> 7) & 1);
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if (((data[0] >> 1) & 1) != 0)
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{
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data[0] |= 0x80;
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}
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else
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{
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data[0] &= 0x7F;
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}
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if (v25 != 0)
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{
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data[0] |= 2;
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}
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else
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{
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data[0] &= 0xFD;
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}
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var v14 = data[1];
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data[1] = data[12];
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data[12] = v14;
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var v15 = data[9];
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data[9] = data[14];
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data[14] = v15;
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var v16 = data[6];
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data[6] = data[7];
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data[7] = v16;
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var v17 = (byte)(data[9] >> 1);
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data[9] <<= 7;
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data[9] |= v17;
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}
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}
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else
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{
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var v6 = data[7];
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data[7] = data[2];
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data[2] = v6;
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var v7 = (byte)(data[4] >> 2);
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data[4] <<= 6;
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data[4] |= v7;
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var v2 = (byte)((data[4] >> 5) & 1);
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if (((data[4] >> 1) & 1) != 0)
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{
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data[4] |= 0x20;
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}
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else
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{
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data[4] &= 0xDF;
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}
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if (v2 != 0)
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{
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data[4] |= 2;
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}
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else
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{
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data[4] &= 0xFD;
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}
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var v28 = (byte)((data[1] >> 2) & 1);
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if (((data[1] >> 4) & 1) != 0)
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{
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data[1] |= 4;
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}
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else
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{
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data[1] &= 0xFB;
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}
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if (v28 != 0)
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{
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data[1] |= 0x10;
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}
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else
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{
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data[1] &= 0xEF;
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}
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var v27 = (byte)((data[6] >> 4) & 1);
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if (((data[6] >> 4) & 1) != 0)
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{
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data[6] |= 0x10;
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}
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else
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{
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data[6] &= 0xEF;
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}
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if (v27 != 0)
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{
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data[6] |= 0x10;
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}
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else
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{
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data[6] &= 0xEF;
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}
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data[5] ^= 0xD9;
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var v8 = data[6];
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data[6] = data[0];
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data[0] = v8;
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data[4] ^= 0xE5;
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var v9 = data[7];
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data[7] = data[0];
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data[0] = v9;
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var v26 = (byte)((data[5] >> 2) & 1);
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if (((data[5] >> 5) & 1) != 0)
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{
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data[5] |= 4;
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}
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else
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{
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data[5] &= 0xFB;
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}
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if (v26 != 0)
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{
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data[5] |= 0x20;
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}
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else
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{
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data[5] &= 0xDF;
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}
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data[5] ^= 0xAC;
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var v10 = data[0];
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data[0] = data[4];
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data[4] = v10;
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var v11 = data[6];
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data[6] = data[6];
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data[6] = v11;
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}
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}
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else
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{
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var v3 = data[1];
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data[1] = data[3];
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data[3] = v3;
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var v4 = (byte)(data[0] >> 2);
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data[0] <<= 6;
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data[0] |= v4;
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data[2] ^= 0x71;
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var v5 = (byte)(data[2] >> 7);
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data[2] *= 2;
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data[2] |= v5;
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}
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}
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}
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} |