mirror of
https://github.com/aaru-dps/AaruBenchmark.git
synced 2025-12-16 19:24:36 +00:00
1043 lines
52 KiB
C#
1043 lines
52 KiB
C#
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// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : SpamSumContext.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Checksums.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Implements the SpamSum fuzzy hashing algorithm.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2021 Natalia Portillo
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// ****************************************************************************/
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// Based on ssdeep
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// Copyright (C) 2002 Andrew Tridgell <tridge@samba.org>
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// Copyright (C) 2006 ManTech International Corporation
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// Copyright (C) 2013 Helmut Grohne <helmut@subdivi.de>
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//
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// Earlier versions of this code were named fuzzy.c and can be found at:
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// http://www.samba.org/ftp/unpacked/junkcode/spamsum/
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// http://ssdeep.sf.net/
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using System;
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using System.Runtime.CompilerServices;
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using System.Text;
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using Aaru.CommonTypes.Interfaces;
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namespace Aaru6.Checksums
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{
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/// <inheritdoc />
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/// <summary>Implements the SpamSum fuzzy hashing algorithm.</summary>
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public sealed class SpamSumContext : IChecksum
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{
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const uint ROLLING_WINDOW = 7;
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const uint MIN_BLOCKSIZE = 3;
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const uint HASH_INIT = 0x27;
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const uint NUM_BLOCKHASHES = 31;
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const uint SPAMSUM_LENGTH = 64;
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const uint FUZZY_MAX_RESULT = (2 * SPAMSUM_LENGTH) + 20;
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// Precomputed patrial FNV hash table
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static readonly byte[][] sum_table =
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{
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new byte[]
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{
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// 0x00
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
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0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21,
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0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32,
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0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f
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},
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new byte[]
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{
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// 0x01
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0x13, 0x12, 0x11, 0x10, 0x17, 0x16, 0x15, 0x14, 0x1b, 0x1a, 0x19, 0x18, 0x1f, 0x1e, 0x1d, 0x1c, 0x03,
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0x02, 0x01, 0x00, 0x07, 0x06, 0x05, 0x04, 0x0b, 0x0a, 0x09, 0x08, 0x0f, 0x0e, 0x0d, 0x0c, 0x33, 0x32,
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0x31, 0x30, 0x37, 0x36, 0x35, 0x34, 0x3b, 0x3a, 0x39, 0x38, 0x3f, 0x3e, 0x3d, 0x3c, 0x23, 0x22, 0x21,
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0x20, 0x27, 0x26, 0x25, 0x24, 0x2b, 0x2a, 0x29, 0x28, 0x2f, 0x2e, 0x2d, 0x2c
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},
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new byte[]
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{
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// 0x02
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0x26, 0x27, 0x24, 0x25, 0x22, 0x23, 0x20, 0x21, 0x2e, 0x2f, 0x2c, 0x2d, 0x2a, 0x2b, 0x28, 0x29, 0x36,
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0x37, 0x34, 0x35, 0x32, 0x33, 0x30, 0x31, 0x3e, 0x3f, 0x3c, 0x3d, 0x3a, 0x3b, 0x38, 0x39, 0x06, 0x07,
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0x04, 0x05, 0x02, 0x03, 0x00, 0x01, 0x0e, 0x0f, 0x0c, 0x0d, 0x0a, 0x0b, 0x08, 0x09, 0x16, 0x17, 0x14,
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0x15, 0x12, 0x13, 0x10, 0x11, 0x1e, 0x1f, 0x1c, 0x1d, 0x1a, 0x1b, 0x18, 0x19
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},
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new byte[]
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{
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// 0x03
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0x39, 0x38, 0x3b, 0x3a, 0x3d, 0x3c, 0x3f, 0x3e, 0x31, 0x30, 0x33, 0x32, 0x35, 0x34, 0x37, 0x36, 0x29,
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0x28, 0x2b, 0x2a, 0x2d, 0x2c, 0x2f, 0x2e, 0x21, 0x20, 0x23, 0x22, 0x25, 0x24, 0x27, 0x26, 0x19, 0x18,
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0x1b, 0x1a, 0x1d, 0x1c, 0x1f, 0x1e, 0x11, 0x10, 0x13, 0x12, 0x15, 0x14, 0x17, 0x16, 0x09, 0x08, 0x0b,
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0x0a, 0x0d, 0x0c, 0x0f, 0x0e, 0x01, 0x00, 0x03, 0x02, 0x05, 0x04, 0x07, 0x06
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},
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new byte[]
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{
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// 0x04
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0x0c, 0x0d, 0x0e, 0x0f, 0x08, 0x09, 0x0a, 0x0b, 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x1c,
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0x1d, 0x1e, 0x1f, 0x18, 0x19, 0x1a, 0x1b, 0x14, 0x15, 0x16, 0x17, 0x10, 0x11, 0x12, 0x13, 0x2c, 0x2d,
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0x2e, 0x2f, 0x28, 0x29, 0x2a, 0x2b, 0x24, 0x25, 0x26, 0x27, 0x20, 0x21, 0x22, 0x23, 0x3c, 0x3d, 0x3e,
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0x3f, 0x38, 0x39, 0x3a, 0x3b, 0x34, 0x35, 0x36, 0x37, 0x30, 0x31, 0x32, 0x33
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},
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new byte[]
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{
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// 0x05
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0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f,
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0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x3f, 0x3e,
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0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x2f, 0x2e, 0x2d,
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0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20
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},
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new byte[]
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{
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// 0x06
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0x32, 0x33, 0x30, 0x31, 0x36, 0x37, 0x34, 0x35, 0x3a, 0x3b, 0x38, 0x39, 0x3e, 0x3f, 0x3c, 0x3d, 0x22,
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0x23, 0x20, 0x21, 0x26, 0x27, 0x24, 0x25, 0x2a, 0x2b, 0x28, 0x29, 0x2e, 0x2f, 0x2c, 0x2d, 0x12, 0x13,
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0x10, 0x11, 0x16, 0x17, 0x14, 0x15, 0x1a, 0x1b, 0x18, 0x19, 0x1e, 0x1f, 0x1c, 0x1d, 0x02, 0x03, 0x00,
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0x01, 0x06, 0x07, 0x04, 0x05, 0x0a, 0x0b, 0x08, 0x09, 0x0e, 0x0f, 0x0c, 0x0d
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},
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new byte[]
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{
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// 0x07
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0x05, 0x04, 0x07, 0x06, 0x01, 0x00, 0x03, 0x02, 0x0d, 0x0c, 0x0f, 0x0e, 0x09, 0x08, 0x0b, 0x0a, 0x15,
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0x14, 0x17, 0x16, 0x11, 0x10, 0x13, 0x12, 0x1d, 0x1c, 0x1f, 0x1e, 0x19, 0x18, 0x1b, 0x1a, 0x25, 0x24,
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0x27, 0x26, 0x21, 0x20, 0x23, 0x22, 0x2d, 0x2c, 0x2f, 0x2e, 0x29, 0x28, 0x2b, 0x2a, 0x35, 0x34, 0x37,
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0x36, 0x31, 0x30, 0x33, 0x32, 0x3d, 0x3c, 0x3f, 0x3e, 0x39, 0x38, 0x3b, 0x3a
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},
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new byte[]
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{
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// 0x08
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x08,
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0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x38, 0x39,
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0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x28, 0x29, 0x2a,
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0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27
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},
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new byte[]
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{
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// 0x09
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0x2b, 0x2a, 0x29, 0x28, 0x2f, 0x2e, 0x2d, 0x2c, 0x23, 0x22, 0x21, 0x20, 0x27, 0x26, 0x25, 0x24, 0x3b,
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0x3a, 0x39, 0x38, 0x3f, 0x3e, 0x3d, 0x3c, 0x33, 0x32, 0x31, 0x30, 0x37, 0x36, 0x35, 0x34, 0x0b, 0x0a,
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0x09, 0x08, 0x0f, 0x0e, 0x0d, 0x0c, 0x03, 0x02, 0x01, 0x00, 0x07, 0x06, 0x05, 0x04, 0x1b, 0x1a, 0x19,
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0x18, 0x1f, 0x1e, 0x1d, 0x1c, 0x13, 0x12, 0x11, 0x10, 0x17, 0x16, 0x15, 0x14
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},
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new byte[]
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{
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// 0x0a
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0x3e, 0x3f, 0x3c, 0x3d, 0x3a, 0x3b, 0x38, 0x39, 0x36, 0x37, 0x34, 0x35, 0x32, 0x33, 0x30, 0x31, 0x2e,
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0x2f, 0x2c, 0x2d, 0x2a, 0x2b, 0x28, 0x29, 0x26, 0x27, 0x24, 0x25, 0x22, 0x23, 0x20, 0x21, 0x1e, 0x1f,
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0x1c, 0x1d, 0x1a, 0x1b, 0x18, 0x19, 0x16, 0x17, 0x14, 0x15, 0x12, 0x13, 0x10, 0x11, 0x0e, 0x0f, 0x0c,
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0x0d, 0x0a, 0x0b, 0x08, 0x09, 0x06, 0x07, 0x04, 0x05, 0x02, 0x03, 0x00, 0x01
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},
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new byte[]
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{
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// 0x0b
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0x11, 0x10, 0x13, 0x12, 0x15, 0x14, 0x17, 0x16, 0x19, 0x18, 0x1b, 0x1a, 0x1d, 0x1c, 0x1f, 0x1e, 0x01,
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0x00, 0x03, 0x02, 0x05, 0x04, 0x07, 0x06, 0x09, 0x08, 0x0b, 0x0a, 0x0d, 0x0c, 0x0f, 0x0e, 0x31, 0x30,
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0x33, 0x32, 0x35, 0x34, 0x37, 0x36, 0x39, 0x38, 0x3b, 0x3a, 0x3d, 0x3c, 0x3f, 0x3e, 0x21, 0x20, 0x23,
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0x22, 0x25, 0x24, 0x27, 0x26, 0x29, 0x28, 0x2b, 0x2a, 0x2d, 0x2c, 0x2f, 0x2e
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},
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new byte[]
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{
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// 0x0c
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0x24, 0x25, 0x26, 0x27, 0x20, 0x21, 0x22, 0x23, 0x2c, 0x2d, 0x2e, 0x2f, 0x28, 0x29, 0x2a, 0x2b, 0x34,
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0x35, 0x36, 0x37, 0x30, 0x31, 0x32, 0x33, 0x3c, 0x3d, 0x3e, 0x3f, 0x38, 0x39, 0x3a, 0x3b, 0x04, 0x05,
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0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x0c, 0x0d, 0x0e, 0x0f, 0x08, 0x09, 0x0a, 0x0b, 0x14, 0x15, 0x16,
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0x17, 0x10, 0x11, 0x12, 0x13, 0x1c, 0x1d, 0x1e, 0x1f, 0x18, 0x19, 0x1a, 0x1b
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},
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new byte[]
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{
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// 0x0d
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0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38, 0x27,
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0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20, 0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x17, 0x16,
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0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x07, 0x06, 0x05,
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0x04, 0x03, 0x02, 0x01, 0x00, 0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08
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},
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new byte[]
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{
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// 0x0e
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0x0a, 0x0b, 0x08, 0x09, 0x0e, 0x0f, 0x0c, 0x0d, 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, 0x1a,
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0x1b, 0x18, 0x19, 0x1e, 0x1f, 0x1c, 0x1d, 0x12, 0x13, 0x10, 0x11, 0x16, 0x17, 0x14, 0x15, 0x2a, 0x2b,
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0x28, 0x29, 0x2e, 0x2f, 0x2c, 0x2d, 0x22, 0x23, 0x20, 0x21, 0x26, 0x27, 0x24, 0x25, 0x3a, 0x3b, 0x38,
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||
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0x39, 0x3e, 0x3f, 0x3c, 0x3d, 0x32, 0x33, 0x30, 0x31, 0x36, 0x37, 0x34, 0x35
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||
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},
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new byte[]
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||
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{
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// 0x0f
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||
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0x1d, 0x1c, 0x1f, 0x1e, 0x19, 0x18, 0x1b, 0x1a, 0x15, 0x14, 0x17, 0x16, 0x11, 0x10, 0x13, 0x12, 0x0d,
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||
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0x0c, 0x0f, 0x0e, 0x09, 0x08, 0x0b, 0x0a, 0x05, 0x04, 0x07, 0x06, 0x01, 0x00, 0x03, 0x02, 0x3d, 0x3c,
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||
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0x3f, 0x3e, 0x39, 0x38, 0x3b, 0x3a, 0x35, 0x34, 0x37, 0x36, 0x31, 0x30, 0x33, 0x32, 0x2d, 0x2c, 0x2f,
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||
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0x2e, 0x29, 0x28, 0x2b, 0x2a, 0x25, 0x24, 0x27, 0x26, 0x21, 0x20, 0x23, 0x22
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||
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},
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||
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new byte[]
|
||
|
|
{
|
||
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// 0x10
|
||
|
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0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x20,
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||
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0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x10, 0x11,
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||
|
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0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x00, 0x01, 0x02,
|
||
|
|
0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x11
|
||
|
|
0x03, 0x02, 0x01, 0x00, 0x07, 0x06, 0x05, 0x04, 0x0b, 0x0a, 0x09, 0x08, 0x0f, 0x0e, 0x0d, 0x0c, 0x13,
|
||
|
|
0x12, 0x11, 0x10, 0x17, 0x16, 0x15, 0x14, 0x1b, 0x1a, 0x19, 0x18, 0x1f, 0x1e, 0x1d, 0x1c, 0x23, 0x22,
|
||
|
|
0x21, 0x20, 0x27, 0x26, 0x25, 0x24, 0x2b, 0x2a, 0x29, 0x28, 0x2f, 0x2e, 0x2d, 0x2c, 0x33, 0x32, 0x31,
|
||
|
|
0x30, 0x37, 0x36, 0x35, 0x34, 0x3b, 0x3a, 0x39, 0x38, 0x3f, 0x3e, 0x3d, 0x3c
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x12
|
||
|
|
0x16, 0x17, 0x14, 0x15, 0x12, 0x13, 0x10, 0x11, 0x1e, 0x1f, 0x1c, 0x1d, 0x1a, 0x1b, 0x18, 0x19, 0x06,
|
||
|
|
0x07, 0x04, 0x05, 0x02, 0x03, 0x00, 0x01, 0x0e, 0x0f, 0x0c, 0x0d, 0x0a, 0x0b, 0x08, 0x09, 0x36, 0x37,
|
||
|
|
0x34, 0x35, 0x32, 0x33, 0x30, 0x31, 0x3e, 0x3f, 0x3c, 0x3d, 0x3a, 0x3b, 0x38, 0x39, 0x26, 0x27, 0x24,
|
||
|
|
0x25, 0x22, 0x23, 0x20, 0x21, 0x2e, 0x2f, 0x2c, 0x2d, 0x2a, 0x2b, 0x28, 0x29
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x13
|
||
|
|
0x29, 0x28, 0x2b, 0x2a, 0x2d, 0x2c, 0x2f, 0x2e, 0x21, 0x20, 0x23, 0x22, 0x25, 0x24, 0x27, 0x26, 0x39,
|
||
|
|
0x38, 0x3b, 0x3a, 0x3d, 0x3c, 0x3f, 0x3e, 0x31, 0x30, 0x33, 0x32, 0x35, 0x34, 0x37, 0x36, 0x09, 0x08,
|
||
|
|
0x0b, 0x0a, 0x0d, 0x0c, 0x0f, 0x0e, 0x01, 0x00, 0x03, 0x02, 0x05, 0x04, 0x07, 0x06, 0x19, 0x18, 0x1b,
|
||
|
|
0x1a, 0x1d, 0x1c, 0x1f, 0x1e, 0x11, 0x10, 0x13, 0x12, 0x15, 0x14, 0x17, 0x16
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x14
|
||
|
|
0x3c, 0x3d, 0x3e, 0x3f, 0x38, 0x39, 0x3a, 0x3b, 0x34, 0x35, 0x36, 0x37, 0x30, 0x31, 0x32, 0x33, 0x2c,
|
||
|
|
0x2d, 0x2e, 0x2f, 0x28, 0x29, 0x2a, 0x2b, 0x24, 0x25, 0x26, 0x27, 0x20, 0x21, 0x22, 0x23, 0x1c, 0x1d,
|
||
|
|
0x1e, 0x1f, 0x18, 0x19, 0x1a, 0x1b, 0x14, 0x15, 0x16, 0x17, 0x10, 0x11, 0x12, 0x13, 0x0c, 0x0d, 0x0e,
|
||
|
|
0x0f, 0x08, 0x09, 0x0a, 0x0b, 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x15
|
||
|
|
0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x1f,
|
||
|
|
0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x2f, 0x2e,
|
||
|
|
0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20, 0x3f, 0x3e, 0x3d,
|
||
|
|
0x3c, 0x3b, 0x3a, 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x16
|
||
|
|
0x22, 0x23, 0x20, 0x21, 0x26, 0x27, 0x24, 0x25, 0x2a, 0x2b, 0x28, 0x29, 0x2e, 0x2f, 0x2c, 0x2d, 0x32,
|
||
|
|
0x33, 0x30, 0x31, 0x36, 0x37, 0x34, 0x35, 0x3a, 0x3b, 0x38, 0x39, 0x3e, 0x3f, 0x3c, 0x3d, 0x02, 0x03,
|
||
|
|
0x00, 0x01, 0x06, 0x07, 0x04, 0x05, 0x0a, 0x0b, 0x08, 0x09, 0x0e, 0x0f, 0x0c, 0x0d, 0x12, 0x13, 0x10,
|
||
|
|
0x11, 0x16, 0x17, 0x14, 0x15, 0x1a, 0x1b, 0x18, 0x19, 0x1e, 0x1f, 0x1c, 0x1d
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x17
|
||
|
|
0x35, 0x34, 0x37, 0x36, 0x31, 0x30, 0x33, 0x32, 0x3d, 0x3c, 0x3f, 0x3e, 0x39, 0x38, 0x3b, 0x3a, 0x25,
|
||
|
|
0x24, 0x27, 0x26, 0x21, 0x20, 0x23, 0x22, 0x2d, 0x2c, 0x2f, 0x2e, 0x29, 0x28, 0x2b, 0x2a, 0x15, 0x14,
|
||
|
|
0x17, 0x16, 0x11, 0x10, 0x13, 0x12, 0x1d, 0x1c, 0x1f, 0x1e, 0x19, 0x18, 0x1b, 0x1a, 0x05, 0x04, 0x07,
|
||
|
|
0x06, 0x01, 0x00, 0x03, 0x02, 0x0d, 0x0c, 0x0f, 0x0e, 0x09, 0x08, 0x0b, 0x0a
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x18
|
||
|
|
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x18,
|
||
|
|
0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x28, 0x29,
|
||
|
|
0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x38, 0x39, 0x3a,
|
||
|
|
0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x19
|
||
|
|
0x1b, 0x1a, 0x19, 0x18, 0x1f, 0x1e, 0x1d, 0x1c, 0x13, 0x12, 0x11, 0x10, 0x17, 0x16, 0x15, 0x14, 0x0b,
|
||
|
|
0x0a, 0x09, 0x08, 0x0f, 0x0e, 0x0d, 0x0c, 0x03, 0x02, 0x01, 0x00, 0x07, 0x06, 0x05, 0x04, 0x3b, 0x3a,
|
||
|
|
0x39, 0x38, 0x3f, 0x3e, 0x3d, 0x3c, 0x33, 0x32, 0x31, 0x30, 0x37, 0x36, 0x35, 0x34, 0x2b, 0x2a, 0x29,
|
||
|
|
0x28, 0x2f, 0x2e, 0x2d, 0x2c, 0x23, 0x22, 0x21, 0x20, 0x27, 0x26, 0x25, 0x24
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x1a
|
||
|
|
0x2e, 0x2f, 0x2c, 0x2d, 0x2a, 0x2b, 0x28, 0x29, 0x26, 0x27, 0x24, 0x25, 0x22, 0x23, 0x20, 0x21, 0x3e,
|
||
|
|
0x3f, 0x3c, 0x3d, 0x3a, 0x3b, 0x38, 0x39, 0x36, 0x37, 0x34, 0x35, 0x32, 0x33, 0x30, 0x31, 0x0e, 0x0f,
|
||
|
|
0x0c, 0x0d, 0x0a, 0x0b, 0x08, 0x09, 0x06, 0x07, 0x04, 0x05, 0x02, 0x03, 0x00, 0x01, 0x1e, 0x1f, 0x1c,
|
||
|
|
0x1d, 0x1a, 0x1b, 0x18, 0x19, 0x16, 0x17, 0x14, 0x15, 0x12, 0x13, 0x10, 0x11
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x1b
|
||
|
|
0x01, 0x00, 0x03, 0x02, 0x05, 0x04, 0x07, 0x06, 0x09, 0x08, 0x0b, 0x0a, 0x0d, 0x0c, 0x0f, 0x0e, 0x11,
|
||
|
|
0x10, 0x13, 0x12, 0x15, 0x14, 0x17, 0x16, 0x19, 0x18, 0x1b, 0x1a, 0x1d, 0x1c, 0x1f, 0x1e, 0x21, 0x20,
|
||
|
|
0x23, 0x22, 0x25, 0x24, 0x27, 0x26, 0x29, 0x28, 0x2b, 0x2a, 0x2d, 0x2c, 0x2f, 0x2e, 0x31, 0x30, 0x33,
|
||
|
|
0x32, 0x35, 0x34, 0x37, 0x36, 0x39, 0x38, 0x3b, 0x3a, 0x3d, 0x3c, 0x3f, 0x3e
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x1c
|
||
|
|
0x14, 0x15, 0x16, 0x17, 0x10, 0x11, 0x12, 0x13, 0x1c, 0x1d, 0x1e, 0x1f, 0x18, 0x19, 0x1a, 0x1b, 0x04,
|
||
|
|
0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x0c, 0x0d, 0x0e, 0x0f, 0x08, 0x09, 0x0a, 0x0b, 0x34, 0x35,
|
||
|
|
0x36, 0x37, 0x30, 0x31, 0x32, 0x33, 0x3c, 0x3d, 0x3e, 0x3f, 0x38, 0x39, 0x3a, 0x3b, 0x24, 0x25, 0x26,
|
||
|
|
0x27, 0x20, 0x21, 0x22, 0x23, 0x2c, 0x2d, 0x2e, 0x2f, 0x28, 0x29, 0x2a, 0x2b
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x1d
|
||
|
|
0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20, 0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x37,
|
||
|
|
0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38, 0x07, 0x06,
|
||
|
|
0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x17, 0x16, 0x15,
|
||
|
|
0x14, 0x13, 0x12, 0x11, 0x10, 0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x1e
|
||
|
|
0x3a, 0x3b, 0x38, 0x39, 0x3e, 0x3f, 0x3c, 0x3d, 0x32, 0x33, 0x30, 0x31, 0x36, 0x37, 0x34, 0x35, 0x2a,
|
||
|
|
0x2b, 0x28, 0x29, 0x2e, 0x2f, 0x2c, 0x2d, 0x22, 0x23, 0x20, 0x21, 0x26, 0x27, 0x24, 0x25, 0x1a, 0x1b,
|
||
|
|
0x18, 0x19, 0x1e, 0x1f, 0x1c, 0x1d, 0x12, 0x13, 0x10, 0x11, 0x16, 0x17, 0x14, 0x15, 0x0a, 0x0b, 0x08,
|
||
|
|
0x09, 0x0e, 0x0f, 0x0c, 0x0d, 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x1f
|
||
|
|
0x0d, 0x0c, 0x0f, 0x0e, 0x09, 0x08, 0x0b, 0x0a, 0x05, 0x04, 0x07, 0x06, 0x01, 0x00, 0x03, 0x02, 0x1d,
|
||
|
|
0x1c, 0x1f, 0x1e, 0x19, 0x18, 0x1b, 0x1a, 0x15, 0x14, 0x17, 0x16, 0x11, 0x10, 0x13, 0x12, 0x2d, 0x2c,
|
||
|
|
0x2f, 0x2e, 0x29, 0x28, 0x2b, 0x2a, 0x25, 0x24, 0x27, 0x26, 0x21, 0x20, 0x23, 0x22, 0x3d, 0x3c, 0x3f,
|
||
|
|
0x3e, 0x39, 0x38, 0x3b, 0x3a, 0x35, 0x34, 0x37, 0x36, 0x31, 0x30, 0x33, 0x32
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x20
|
||
|
|
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
|
||
|
|
0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x00, 0x01,
|
||
|
|
0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12,
|
||
|
|
0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x21
|
||
|
|
0x33, 0x32, 0x31, 0x30, 0x37, 0x36, 0x35, 0x34, 0x3b, 0x3a, 0x39, 0x38, 0x3f, 0x3e, 0x3d, 0x3c, 0x23,
|
||
|
|
0x22, 0x21, 0x20, 0x27, 0x26, 0x25, 0x24, 0x2b, 0x2a, 0x29, 0x28, 0x2f, 0x2e, 0x2d, 0x2c, 0x13, 0x12,
|
||
|
|
0x11, 0x10, 0x17, 0x16, 0x15, 0x14, 0x1b, 0x1a, 0x19, 0x18, 0x1f, 0x1e, 0x1d, 0x1c, 0x03, 0x02, 0x01,
|
||
|
|
0x00, 0x07, 0x06, 0x05, 0x04, 0x0b, 0x0a, 0x09, 0x08, 0x0f, 0x0e, 0x0d, 0x0c
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x22
|
||
|
|
0x06, 0x07, 0x04, 0x05, 0x02, 0x03, 0x00, 0x01, 0x0e, 0x0f, 0x0c, 0x0d, 0x0a, 0x0b, 0x08, 0x09, 0x16,
|
||
|
|
0x17, 0x14, 0x15, 0x12, 0x13, 0x10, 0x11, 0x1e, 0x1f, 0x1c, 0x1d, 0x1a, 0x1b, 0x18, 0x19, 0x26, 0x27,
|
||
|
|
0x24, 0x25, 0x22, 0x23, 0x20, 0x21, 0x2e, 0x2f, 0x2c, 0x2d, 0x2a, 0x2b, 0x28, 0x29, 0x36, 0x37, 0x34,
|
||
|
|
0x35, 0x32, 0x33, 0x30, 0x31, 0x3e, 0x3f, 0x3c, 0x3d, 0x3a, 0x3b, 0x38, 0x39
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x23
|
||
|
|
0x19, 0x18, 0x1b, 0x1a, 0x1d, 0x1c, 0x1f, 0x1e, 0x11, 0x10, 0x13, 0x12, 0x15, 0x14, 0x17, 0x16, 0x09,
|
||
|
|
0x08, 0x0b, 0x0a, 0x0d, 0x0c, 0x0f, 0x0e, 0x01, 0x00, 0x03, 0x02, 0x05, 0x04, 0x07, 0x06, 0x39, 0x38,
|
||
|
|
0x3b, 0x3a, 0x3d, 0x3c, 0x3f, 0x3e, 0x31, 0x30, 0x33, 0x32, 0x35, 0x34, 0x37, 0x36, 0x29, 0x28, 0x2b,
|
||
|
|
0x2a, 0x2d, 0x2c, 0x2f, 0x2e, 0x21, 0x20, 0x23, 0x22, 0x25, 0x24, 0x27, 0x26
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x24
|
||
|
|
0x2c, 0x2d, 0x2e, 0x2f, 0x28, 0x29, 0x2a, 0x2b, 0x24, 0x25, 0x26, 0x27, 0x20, 0x21, 0x22, 0x23, 0x3c,
|
||
|
|
0x3d, 0x3e, 0x3f, 0x38, 0x39, 0x3a, 0x3b, 0x34, 0x35, 0x36, 0x37, 0x30, 0x31, 0x32, 0x33, 0x0c, 0x0d,
|
||
|
|
0x0e, 0x0f, 0x08, 0x09, 0x0a, 0x0b, 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x1c, 0x1d, 0x1e,
|
||
|
|
0x1f, 0x18, 0x19, 0x1a, 0x1b, 0x14, 0x15, 0x16, 0x17, 0x10, 0x11, 0x12, 0x13
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x25
|
||
|
|
0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x2f,
|
||
|
|
0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20, 0x1f, 0x1e,
|
||
|
|
0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f, 0x0e, 0x0d,
|
||
|
|
0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x26
|
||
|
|
0x12, 0x13, 0x10, 0x11, 0x16, 0x17, 0x14, 0x15, 0x1a, 0x1b, 0x18, 0x19, 0x1e, 0x1f, 0x1c, 0x1d, 0x02,
|
||
|
|
0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, 0x0a, 0x0b, 0x08, 0x09, 0x0e, 0x0f, 0x0c, 0x0d, 0x32, 0x33,
|
||
|
|
0x30, 0x31, 0x36, 0x37, 0x34, 0x35, 0x3a, 0x3b, 0x38, 0x39, 0x3e, 0x3f, 0x3c, 0x3d, 0x22, 0x23, 0x20,
|
||
|
|
0x21, 0x26, 0x27, 0x24, 0x25, 0x2a, 0x2b, 0x28, 0x29, 0x2e, 0x2f, 0x2c, 0x2d
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x27
|
||
|
|
0x25, 0x24, 0x27, 0x26, 0x21, 0x20, 0x23, 0x22, 0x2d, 0x2c, 0x2f, 0x2e, 0x29, 0x28, 0x2b, 0x2a, 0x35,
|
||
|
|
0x34, 0x37, 0x36, 0x31, 0x30, 0x33, 0x32, 0x3d, 0x3c, 0x3f, 0x3e, 0x39, 0x38, 0x3b, 0x3a, 0x05, 0x04,
|
||
|
|
0x07, 0x06, 0x01, 0x00, 0x03, 0x02, 0x0d, 0x0c, 0x0f, 0x0e, 0x09, 0x08, 0x0b, 0x0a, 0x15, 0x14, 0x17,
|
||
|
|
0x16, 0x11, 0x10, 0x13, 0x12, 0x1d, 0x1c, 0x1f, 0x1e, 0x19, 0x18, 0x1b, 0x1a
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x28
|
||
|
|
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x28,
|
||
|
|
0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x18, 0x19,
|
||
|
|
0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x08, 0x09, 0x0a,
|
||
|
|
0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x29
|
||
|
|
0x0b, 0x0a, 0x09, 0x08, 0x0f, 0x0e, 0x0d, 0x0c, 0x03, 0x02, 0x01, 0x00, 0x07, 0x06, 0x05, 0x04, 0x1b,
|
||
|
|
0x1a, 0x19, 0x18, 0x1f, 0x1e, 0x1d, 0x1c, 0x13, 0x12, 0x11, 0x10, 0x17, 0x16, 0x15, 0x14, 0x2b, 0x2a,
|
||
|
|
0x29, 0x28, 0x2f, 0x2e, 0x2d, 0x2c, 0x23, 0x22, 0x21, 0x20, 0x27, 0x26, 0x25, 0x24, 0x3b, 0x3a, 0x39,
|
||
|
|
0x38, 0x3f, 0x3e, 0x3d, 0x3c, 0x33, 0x32, 0x31, 0x30, 0x37, 0x36, 0x35, 0x34
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x2a
|
||
|
|
0x1e, 0x1f, 0x1c, 0x1d, 0x1a, 0x1b, 0x18, 0x19, 0x16, 0x17, 0x14, 0x15, 0x12, 0x13, 0x10, 0x11, 0x0e,
|
||
|
|
0x0f, 0x0c, 0x0d, 0x0a, 0x0b, 0x08, 0x09, 0x06, 0x07, 0x04, 0x05, 0x02, 0x03, 0x00, 0x01, 0x3e, 0x3f,
|
||
|
|
0x3c, 0x3d, 0x3a, 0x3b, 0x38, 0x39, 0x36, 0x37, 0x34, 0x35, 0x32, 0x33, 0x30, 0x31, 0x2e, 0x2f, 0x2c,
|
||
|
|
0x2d, 0x2a, 0x2b, 0x28, 0x29, 0x26, 0x27, 0x24, 0x25, 0x22, 0x23, 0x20, 0x21
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x2b
|
||
|
|
0x31, 0x30, 0x33, 0x32, 0x35, 0x34, 0x37, 0x36, 0x39, 0x38, 0x3b, 0x3a, 0x3d, 0x3c, 0x3f, 0x3e, 0x21,
|
||
|
|
0x20, 0x23, 0x22, 0x25, 0x24, 0x27, 0x26, 0x29, 0x28, 0x2b, 0x2a, 0x2d, 0x2c, 0x2f, 0x2e, 0x11, 0x10,
|
||
|
|
0x13, 0x12, 0x15, 0x14, 0x17, 0x16, 0x19, 0x18, 0x1b, 0x1a, 0x1d, 0x1c, 0x1f, 0x1e, 0x01, 0x00, 0x03,
|
||
|
|
0x02, 0x05, 0x04, 0x07, 0x06, 0x09, 0x08, 0x0b, 0x0a, 0x0d, 0x0c, 0x0f, 0x0e
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x2c
|
||
|
|
0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x0c, 0x0d, 0x0e, 0x0f, 0x08, 0x09, 0x0a, 0x0b, 0x14,
|
||
|
|
0x15, 0x16, 0x17, 0x10, 0x11, 0x12, 0x13, 0x1c, 0x1d, 0x1e, 0x1f, 0x18, 0x19, 0x1a, 0x1b, 0x24, 0x25,
|
||
|
|
0x26, 0x27, 0x20, 0x21, 0x22, 0x23, 0x2c, 0x2d, 0x2e, 0x2f, 0x28, 0x29, 0x2a, 0x2b, 0x34, 0x35, 0x36,
|
||
|
|
0x37, 0x30, 0x31, 0x32, 0x33, 0x3c, 0x3d, 0x3e, 0x3f, 0x38, 0x39, 0x3a, 0x3b
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x2d
|
||
|
|
0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x07,
|
||
|
|
0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x37, 0x36,
|
||
|
|
0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38, 0x27, 0x26, 0x25,
|
||
|
|
0x24, 0x23, 0x22, 0x21, 0x20, 0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x2e
|
||
|
|
0x2a, 0x2b, 0x28, 0x29, 0x2e, 0x2f, 0x2c, 0x2d, 0x22, 0x23, 0x20, 0x21, 0x26, 0x27, 0x24, 0x25, 0x3a,
|
||
|
|
0x3b, 0x38, 0x39, 0x3e, 0x3f, 0x3c, 0x3d, 0x32, 0x33, 0x30, 0x31, 0x36, 0x37, 0x34, 0x35, 0x0a, 0x0b,
|
||
|
|
0x08, 0x09, 0x0e, 0x0f, 0x0c, 0x0d, 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, 0x1a, 0x1b, 0x18,
|
||
|
|
0x19, 0x1e, 0x1f, 0x1c, 0x1d, 0x12, 0x13, 0x10, 0x11, 0x16, 0x17, 0x14, 0x15
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x2f
|
||
|
|
0x3d, 0x3c, 0x3f, 0x3e, 0x39, 0x38, 0x3b, 0x3a, 0x35, 0x34, 0x37, 0x36, 0x31, 0x30, 0x33, 0x32, 0x2d,
|
||
|
|
0x2c, 0x2f, 0x2e, 0x29, 0x28, 0x2b, 0x2a, 0x25, 0x24, 0x27, 0x26, 0x21, 0x20, 0x23, 0x22, 0x1d, 0x1c,
|
||
|
|
0x1f, 0x1e, 0x19, 0x18, 0x1b, 0x1a, 0x15, 0x14, 0x17, 0x16, 0x11, 0x10, 0x13, 0x12, 0x0d, 0x0c, 0x0f,
|
||
|
|
0x0e, 0x09, 0x08, 0x0b, 0x0a, 0x05, 0x04, 0x07, 0x06, 0x01, 0x00, 0x03, 0x02
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x30
|
||
|
|
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x00,
|
||
|
|
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x30, 0x31,
|
||
|
|
0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x20, 0x21, 0x22,
|
||
|
|
0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x31
|
||
|
|
0x23, 0x22, 0x21, 0x20, 0x27, 0x26, 0x25, 0x24, 0x2b, 0x2a, 0x29, 0x28, 0x2f, 0x2e, 0x2d, 0x2c, 0x33,
|
||
|
|
0x32, 0x31, 0x30, 0x37, 0x36, 0x35, 0x34, 0x3b, 0x3a, 0x39, 0x38, 0x3f, 0x3e, 0x3d, 0x3c, 0x03, 0x02,
|
||
|
|
0x01, 0x00, 0x07, 0x06, 0x05, 0x04, 0x0b, 0x0a, 0x09, 0x08, 0x0f, 0x0e, 0x0d, 0x0c, 0x13, 0x12, 0x11,
|
||
|
|
0x10, 0x17, 0x16, 0x15, 0x14, 0x1b, 0x1a, 0x19, 0x18, 0x1f, 0x1e, 0x1d, 0x1c
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x32
|
||
|
|
0x36, 0x37, 0x34, 0x35, 0x32, 0x33, 0x30, 0x31, 0x3e, 0x3f, 0x3c, 0x3d, 0x3a, 0x3b, 0x38, 0x39, 0x26,
|
||
|
|
0x27, 0x24, 0x25, 0x22, 0x23, 0x20, 0x21, 0x2e, 0x2f, 0x2c, 0x2d, 0x2a, 0x2b, 0x28, 0x29, 0x16, 0x17,
|
||
|
|
0x14, 0x15, 0x12, 0x13, 0x10, 0x11, 0x1e, 0x1f, 0x1c, 0x1d, 0x1a, 0x1b, 0x18, 0x19, 0x06, 0x07, 0x04,
|
||
|
|
0x05, 0x02, 0x03, 0x00, 0x01, 0x0e, 0x0f, 0x0c, 0x0d, 0x0a, 0x0b, 0x08, 0x09
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x33
|
||
|
|
0x09, 0x08, 0x0b, 0x0a, 0x0d, 0x0c, 0x0f, 0x0e, 0x01, 0x00, 0x03, 0x02, 0x05, 0x04, 0x07, 0x06, 0x19,
|
||
|
|
0x18, 0x1b, 0x1a, 0x1d, 0x1c, 0x1f, 0x1e, 0x11, 0x10, 0x13, 0x12, 0x15, 0x14, 0x17, 0x16, 0x29, 0x28,
|
||
|
|
0x2b, 0x2a, 0x2d, 0x2c, 0x2f, 0x2e, 0x21, 0x20, 0x23, 0x22, 0x25, 0x24, 0x27, 0x26, 0x39, 0x38, 0x3b,
|
||
|
|
0x3a, 0x3d, 0x3c, 0x3f, 0x3e, 0x31, 0x30, 0x33, 0x32, 0x35, 0x34, 0x37, 0x36
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x34
|
||
|
|
0x1c, 0x1d, 0x1e, 0x1f, 0x18, 0x19, 0x1a, 0x1b, 0x14, 0x15, 0x16, 0x17, 0x10, 0x11, 0x12, 0x13, 0x0c,
|
||
|
|
0x0d, 0x0e, 0x0f, 0x08, 0x09, 0x0a, 0x0b, 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x3c, 0x3d,
|
||
|
|
0x3e, 0x3f, 0x38, 0x39, 0x3a, 0x3b, 0x34, 0x35, 0x36, 0x37, 0x30, 0x31, 0x32, 0x33, 0x2c, 0x2d, 0x2e,
|
||
|
|
0x2f, 0x28, 0x29, 0x2a, 0x2b, 0x24, 0x25, 0x26, 0x27, 0x20, 0x21, 0x22, 0x23
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x35
|
||
|
|
0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20, 0x3f,
|
||
|
|
0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x0f, 0x0e,
|
||
|
|
0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x1f, 0x1e, 0x1d,
|
||
|
|
0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x36
|
||
|
|
0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, 0x0a, 0x0b, 0x08, 0x09, 0x0e, 0x0f, 0x0c, 0x0d, 0x12,
|
||
|
|
0x13, 0x10, 0x11, 0x16, 0x17, 0x14, 0x15, 0x1a, 0x1b, 0x18, 0x19, 0x1e, 0x1f, 0x1c, 0x1d, 0x22, 0x23,
|
||
|
|
0x20, 0x21, 0x26, 0x27, 0x24, 0x25, 0x2a, 0x2b, 0x28, 0x29, 0x2e, 0x2f, 0x2c, 0x2d, 0x32, 0x33, 0x30,
|
||
|
|
0x31, 0x36, 0x37, 0x34, 0x35, 0x3a, 0x3b, 0x38, 0x39, 0x3e, 0x3f, 0x3c, 0x3d
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x37
|
||
|
|
0x15, 0x14, 0x17, 0x16, 0x11, 0x10, 0x13, 0x12, 0x1d, 0x1c, 0x1f, 0x1e, 0x19, 0x18, 0x1b, 0x1a, 0x05,
|
||
|
|
0x04, 0x07, 0x06, 0x01, 0x00, 0x03, 0x02, 0x0d, 0x0c, 0x0f, 0x0e, 0x09, 0x08, 0x0b, 0x0a, 0x35, 0x34,
|
||
|
|
0x37, 0x36, 0x31, 0x30, 0x33, 0x32, 0x3d, 0x3c, 0x3f, 0x3e, 0x39, 0x38, 0x3b, 0x3a, 0x25, 0x24, 0x27,
|
||
|
|
0x26, 0x21, 0x20, 0x23, 0x22, 0x2d, 0x2c, 0x2f, 0x2e, 0x29, 0x28, 0x2b, 0x2a
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x38
|
||
|
|
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x38,
|
||
|
|
0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x08, 0x09,
|
||
|
|
0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x18, 0x19, 0x1a,
|
||
|
|
0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x39
|
||
|
|
0x3b, 0x3a, 0x39, 0x38, 0x3f, 0x3e, 0x3d, 0x3c, 0x33, 0x32, 0x31, 0x30, 0x37, 0x36, 0x35, 0x34, 0x2b,
|
||
|
|
0x2a, 0x29, 0x28, 0x2f, 0x2e, 0x2d, 0x2c, 0x23, 0x22, 0x21, 0x20, 0x27, 0x26, 0x25, 0x24, 0x1b, 0x1a,
|
||
|
|
0x19, 0x18, 0x1f, 0x1e, 0x1d, 0x1c, 0x13, 0x12, 0x11, 0x10, 0x17, 0x16, 0x15, 0x14, 0x0b, 0x0a, 0x09,
|
||
|
|
0x08, 0x0f, 0x0e, 0x0d, 0x0c, 0x03, 0x02, 0x01, 0x00, 0x07, 0x06, 0x05, 0x04
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x3a
|
||
|
|
0x0e, 0x0f, 0x0c, 0x0d, 0x0a, 0x0b, 0x08, 0x09, 0x06, 0x07, 0x04, 0x05, 0x02, 0x03, 0x00, 0x01, 0x1e,
|
||
|
|
0x1f, 0x1c, 0x1d, 0x1a, 0x1b, 0x18, 0x19, 0x16, 0x17, 0x14, 0x15, 0x12, 0x13, 0x10, 0x11, 0x2e, 0x2f,
|
||
|
|
0x2c, 0x2d, 0x2a, 0x2b, 0x28, 0x29, 0x26, 0x27, 0x24, 0x25, 0x22, 0x23, 0x20, 0x21, 0x3e, 0x3f, 0x3c,
|
||
|
|
0x3d, 0x3a, 0x3b, 0x38, 0x39, 0x36, 0x37, 0x34, 0x35, 0x32, 0x33, 0x30, 0x31
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x3b
|
||
|
|
0x21, 0x20, 0x23, 0x22, 0x25, 0x24, 0x27, 0x26, 0x29, 0x28, 0x2b, 0x2a, 0x2d, 0x2c, 0x2f, 0x2e, 0x31,
|
||
|
|
0x30, 0x33, 0x32, 0x35, 0x34, 0x37, 0x36, 0x39, 0x38, 0x3b, 0x3a, 0x3d, 0x3c, 0x3f, 0x3e, 0x01, 0x00,
|
||
|
|
0x03, 0x02, 0x05, 0x04, 0x07, 0x06, 0x09, 0x08, 0x0b, 0x0a, 0x0d, 0x0c, 0x0f, 0x0e, 0x11, 0x10, 0x13,
|
||
|
|
0x12, 0x15, 0x14, 0x17, 0x16, 0x19, 0x18, 0x1b, 0x1a, 0x1d, 0x1c, 0x1f, 0x1e
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x3c
|
||
|
|
0x34, 0x35, 0x36, 0x37, 0x30, 0x31, 0x32, 0x33, 0x3c, 0x3d, 0x3e, 0x3f, 0x38, 0x39, 0x3a, 0x3b, 0x24,
|
||
|
|
0x25, 0x26, 0x27, 0x20, 0x21, 0x22, 0x23, 0x2c, 0x2d, 0x2e, 0x2f, 0x28, 0x29, 0x2a, 0x2b, 0x14, 0x15,
|
||
|
|
0x16, 0x17, 0x10, 0x11, 0x12, 0x13, 0x1c, 0x1d, 0x1e, 0x1f, 0x18, 0x19, 0x1a, 0x1b, 0x04, 0x05, 0x06,
|
||
|
|
0x07, 0x00, 0x01, 0x02, 0x03, 0x0c, 0x0d, 0x0e, 0x0f, 0x08, 0x09, 0x0a, 0x0b
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x3d
|
||
|
|
0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x17,
|
||
|
|
0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x27, 0x26,
|
||
|
|
0x25, 0x24, 0x23, 0x22, 0x21, 0x20, 0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x37, 0x36, 0x35,
|
||
|
|
0x34, 0x33, 0x32, 0x31, 0x30, 0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x3e
|
||
|
|
0x1a, 0x1b, 0x18, 0x19, 0x1e, 0x1f, 0x1c, 0x1d, 0x12, 0x13, 0x10, 0x11, 0x16, 0x17, 0x14, 0x15, 0x0a,
|
||
|
|
0x0b, 0x08, 0x09, 0x0e, 0x0f, 0x0c, 0x0d, 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, 0x3a, 0x3b,
|
||
|
|
0x38, 0x39, 0x3e, 0x3f, 0x3c, 0x3d, 0x32, 0x33, 0x30, 0x31, 0x36, 0x37, 0x34, 0x35, 0x2a, 0x2b, 0x28,
|
||
|
|
0x29, 0x2e, 0x2f, 0x2c, 0x2d, 0x22, 0x23, 0x20, 0x21, 0x26, 0x27, 0x24, 0x25
|
||
|
|
},
|
||
|
|
new byte[]
|
||
|
|
{
|
||
|
|
// 0x3f
|
||
|
|
0x2d, 0x2c, 0x2f, 0x2e, 0x29, 0x28, 0x2b, 0x2a, 0x25, 0x24, 0x27, 0x26, 0x21, 0x20, 0x23, 0x22, 0x3d,
|
||
|
|
0x3c, 0x3f, 0x3e, 0x39, 0x38, 0x3b, 0x3a, 0x35, 0x34, 0x37, 0x36, 0x31, 0x30, 0x33, 0x32, 0x0d, 0x0c,
|
||
|
|
0x0f, 0x0e, 0x09, 0x08, 0x0b, 0x0a, 0x05, 0x04, 0x07, 0x06, 0x01, 0x00, 0x03, 0x02, 0x1d, 0x1c, 0x1f,
|
||
|
|
0x1e, 0x19, 0x18, 0x1b, 0x1a, 0x15, 0x14, 0x17, 0x16, 0x11, 0x10, 0x13, 0x12
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
//"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
||
|
|
readonly byte[] _b64 =
|
||
|
|
{
|
||
|
|
0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52,
|
||
|
|
0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
|
||
|
|
0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x30, 0x31,
|
||
|
|
0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2B, 0x2F
|
||
|
|
};
|
||
|
|
|
||
|
|
FuzzyState _self;
|
||
|
|
|
||
|
|
/// <summary>Initializes the SpamSum structures</summary>
|
||
|
|
public SpamSumContext()
|
||
|
|
{
|
||
|
|
_self = new FuzzyState
|
||
|
|
{
|
||
|
|
Bh = new BlockhashContext[NUM_BLOCKHASHES]
|
||
|
|
};
|
||
|
|
|
||
|
|
for(int i = 0; i < NUM_BLOCKHASHES; i++)
|
||
|
|
_self.Bh[i].Digest = new byte[SPAMSUM_LENGTH];
|
||
|
|
|
||
|
|
_self.Bhstart = 0;
|
||
|
|
_self.Bhend = 1;
|
||
|
|
_self.Bh[0].H = HASH_INIT;
|
||
|
|
_self.Bh[0].Halfh = HASH_INIT;
|
||
|
|
_self.Bh[0].Digest[0] = 0;
|
||
|
|
_self.Bh[0].Halfdigest = 0;
|
||
|
|
_self.Bh[0].Dlen = 0;
|
||
|
|
_self.TotalSize = 0;
|
||
|
|
roll_init();
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <inheritdoc />
|
||
|
|
/// <summary>Updates the hash with data.</summary>
|
||
|
|
/// <param name="data">Data buffer.</param>
|
||
|
|
/// <param name="len">Length of buffer to hash.</param>
|
||
|
|
public void Update(byte[] data, uint len)
|
||
|
|
{
|
||
|
|
_self.TotalSize += len;
|
||
|
|
|
||
|
|
for(int i = 0; i < len; i++)
|
||
|
|
fuzzy_engine_step(data[i]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <inheritdoc />
|
||
|
|
/// <summary>Updates the hash with data.</summary>
|
||
|
|
/// <param name="data">Data buffer.</param>
|
||
|
|
public void Update(byte[] data) => Update(data, (uint)data.Length);
|
||
|
|
|
||
|
|
/// <inheritdoc />
|
||
|
|
/// <summary>Returns a byte array of the hash value.</summary>
|
||
|
|
public byte[] Final() => throw new NotImplementedException("SpamSum does not have a binary representation.");
|
||
|
|
|
||
|
|
/// <inheritdoc />
|
||
|
|
/// <summary>Returns a base64 representation of the hash value.</summary>
|
||
|
|
public string End()
|
||
|
|
{
|
||
|
|
FuzzyDigest(out byte[] result);
|
||
|
|
|
||
|
|
return CToString(result);
|
||
|
|
}
|
||
|
|
|
||
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||
|
|
void roll_init() => _self.Roll = new RollState
|
||
|
|
{
|
||
|
|
Window = new byte[ROLLING_WINDOW]
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* a rolling hash, based on the Adler checksum. By using a rolling hash
|
||
|
|
* we can perform auto resynchronisation after inserts/deletes
|
||
|
|
|
||
|
|
* internally, h1 is the sum of the bytes in the window and h2
|
||
|
|
* is the sum of the bytes times the index
|
||
|
|
|
||
|
|
* h3 is a shift/xor based rolling hash, and is mostly needed to ensure that
|
||
|
|
* we can cope with large blocksize values
|
||
|
|
*/
|
||
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||
|
|
void roll_hash(uint c)
|
||
|
|
{
|
||
|
|
_self.Roll.H2 -= _self.Roll.H1;
|
||
|
|
_self.Roll.H2 += ROLLING_WINDOW * c;
|
||
|
|
|
||
|
|
_self.Roll.H1 += c;
|
||
|
|
_self.Roll.H1 -= _self.Roll.Window[_self.Roll.N % ROLLING_WINDOW];
|
||
|
|
|
||
|
|
_self.Roll.Window[_self.Roll.N % ROLLING_WINDOW] = (byte)c;
|
||
|
|
_self.Roll.N++;
|
||
|
|
|
||
|
|
/* The original spamsum AND'ed this value with 0xFFFFFFFF which
|
||
|
|
* in theory should have no effect. This AND has been removed
|
||
|
|
* for performance (jk) */
|
||
|
|
_self.Roll.H3 <<= 5;
|
||
|
|
_self.Roll.H3 ^= c;
|
||
|
|
}
|
||
|
|
|
||
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||
|
|
uint roll_sum() => _self.Roll.H1 + _self.Roll.H2 + _self.Roll.H3;
|
||
|
|
|
||
|
|
/* A simple non-rolling hash, based on the FNV hash. */
|
||
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||
|
|
static uint sum_hash(uint c, uint h) => sum_table[h][c & 0x3f];
|
||
|
|
|
||
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||
|
|
static uint SSDEEP_BS(uint index) => MIN_BLOCKSIZE << (int)index;
|
||
|
|
|
||
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||
|
|
void fuzzy_try_fork_blockhash()
|
||
|
|
{
|
||
|
|
if(_self.Bhend >= NUM_BLOCKHASHES)
|
||
|
|
return;
|
||
|
|
|
||
|
|
/* if(_self.Bhend == 0) // assert
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
uint obh = _self.Bhend - 1;
|
||
|
|
uint nbh = _self.Bhend;
|
||
|
|
_self.Bh[nbh].H = _self.Bh[obh].H;
|
||
|
|
_self.Bh[nbh].Halfh = _self.Bh[obh].Halfh;
|
||
|
|
_self.Bh[nbh].Digest[0] = 0;
|
||
|
|
_self.Bh[nbh].Halfdigest = 0;
|
||
|
|
_self.Bh[nbh].Dlen = 0;
|
||
|
|
++_self.Bhend;
|
||
|
|
}
|
||
|
|
|
||
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||
|
|
void fuzzy_try_reduce_blockhash()
|
||
|
|
{
|
||
|
|
/* if(_self.Bhstart >= _self.Bhend)
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
if(_self.Bhend - _self.Bhstart < 2)
|
||
|
|
/* Need at least two working hashes. */
|
||
|
|
return;
|
||
|
|
|
||
|
|
if((ulong)SSDEEP_BS(_self.Bhstart) * SPAMSUM_LENGTH >= _self.TotalSize)
|
||
|
|
/* Initial blocksize estimate would select this or a smaller
|
||
|
|
* blocksize. */
|
||
|
|
return;
|
||
|
|
|
||
|
|
if(_self.Bh[_self.Bhstart + 1].Dlen < SPAMSUM_LENGTH / 2)
|
||
|
|
/* Estimate adjustment would select this blocksize. */
|
||
|
|
return;
|
||
|
|
|
||
|
|
/* At this point we are clearly no longer interested in the
|
||
|
|
* start_blocksize. Get rid of it. */
|
||
|
|
++_self.Bhstart;
|
||
|
|
}
|
||
|
|
|
||
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||
|
|
void fuzzy_engine_step(uint c)
|
||
|
|
{
|
||
|
|
uint i;
|
||
|
|
/* At each character we update the rolling hash and the normal hashes.
|
||
|
|
* When the rolling hash hits a reset value then we emit a normal hash
|
||
|
|
* as a element of the signature and reset the normal hash. */
|
||
|
|
roll_hash(c);
|
||
|
|
ulong h = roll_sum();
|
||
|
|
|
||
|
|
for(i = _self.Bhstart; i < _self.Bhend; ++i)
|
||
|
|
{
|
||
|
|
_self.Bh[i].H = sum_hash(c, _self.Bh[i].H);
|
||
|
|
_self.Bh[i].Halfh = sum_hash(c, _self.Bh[i].Halfh);
|
||
|
|
}
|
||
|
|
|
||
|
|
for(i = _self.Bhstart; i < _self.Bhend; ++i)
|
||
|
|
{
|
||
|
|
/* With growing blocksize almost no runs fail the next test. */
|
||
|
|
if(h % SSDEEP_BS(i) != SSDEEP_BS(i) - 1)
|
||
|
|
/* Once this condition is false for one bs, it is
|
||
|
|
* automatically false for all further bs. I.e. if
|
||
|
|
* h === -1 (mod 2*bs) then h === -1 (mod bs). */
|
||
|
|
break;
|
||
|
|
|
||
|
|
/* We have hit a reset point. We now emit hashes which are
|
||
|
|
* based on all characters in the piece of the message between
|
||
|
|
* the last reset point and this one */
|
||
|
|
if(0 == _self.Bh[i].Dlen)
|
||
|
|
fuzzy_try_fork_blockhash();
|
||
|
|
|
||
|
|
_self.Bh[i].Digest[_self.Bh[i].Dlen] = _b64[_self.Bh[i].H % 64];
|
||
|
|
_self.Bh[i].Halfdigest = _b64[_self.Bh[i].Halfh % 64];
|
||
|
|
|
||
|
|
if(_self.Bh[i].Dlen < SPAMSUM_LENGTH - 1)
|
||
|
|
{
|
||
|
|
/* We can have a problem with the tail overflowing. The
|
||
|
|
* easiest way to cope with this is to only reset the
|
||
|
|
* normal hash if we have room for more characters in
|
||
|
|
* our signature. This has the effect of combining the
|
||
|
|
* last few pieces of the message into a single piece
|
||
|
|
* */
|
||
|
|
_self.Bh[i].Digest[++_self.Bh[i].Dlen] = 0;
|
||
|
|
_self.Bh[i].H = HASH_INIT;
|
||
|
|
|
||
|
|
if(_self.Bh[i].Dlen >= SPAMSUM_LENGTH / 2)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
_self.Bh[i].Halfh = HASH_INIT;
|
||
|
|
_self.Bh[i].Halfdigest = 0;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
fuzzy_try_reduce_blockhash();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// CLAUNIA: Flags seems to never be used in ssdeep, so I just removed it for code simplicity
|
||
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||
|
|
void FuzzyDigest(out byte[] result)
|
||
|
|
{
|
||
|
|
var sb = new StringBuilder();
|
||
|
|
uint bi = _self.Bhstart;
|
||
|
|
uint h = roll_sum();
|
||
|
|
int remain = (int)(FUZZY_MAX_RESULT - 1); /* Exclude terminating '\0'. */
|
||
|
|
result = new byte[FUZZY_MAX_RESULT];
|
||
|
|
|
||
|
|
/* Verify that our elimination was not overeager. */
|
||
|
|
/* if(!(bi == 0 || (ulong)SSDEEP_BS(bi) / 2 * SPAMSUM_LENGTH < _self.TotalSize))
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
int resultOff;
|
||
|
|
|
||
|
|
/* Initial blocksize guess. */
|
||
|
|
while((ulong)SSDEEP_BS(bi) * SPAMSUM_LENGTH < _self.TotalSize)
|
||
|
|
{
|
||
|
|
++bi;
|
||
|
|
|
||
|
|
if(bi >= NUM_BLOCKHASHES)
|
||
|
|
throw new OverflowException("The input exceeds data types.");
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Adapt blocksize guess to actual digest length. */
|
||
|
|
while(bi >= _self.Bhend)
|
||
|
|
--bi;
|
||
|
|
|
||
|
|
while(bi > _self.Bhstart &&
|
||
|
|
_self.Bh[bi].Dlen < SPAMSUM_LENGTH / 2)
|
||
|
|
--bi;
|
||
|
|
|
||
|
|
/* if(bi > 0 &&
|
||
|
|
_self.Bh[bi].Dlen < SPAMSUM_LENGTH / 2)
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
sb.AppendFormat("{0}:", SSDEEP_BS(bi));
|
||
|
|
int i = Encoding.ASCII.GetBytes(sb.ToString()).Length;
|
||
|
|
|
||
|
|
if(i <= 0)
|
||
|
|
/* Maybe snprintf has set errno here? */
|
||
|
|
throw new OverflowException("The input exceeds data types.");
|
||
|
|
|
||
|
|
/* if(i >= remain)
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
remain -= i;
|
||
|
|
|
||
|
|
Array.Copy(Encoding.ASCII.GetBytes(sb.ToString()), 0, result, 0, i);
|
||
|
|
|
||
|
|
resultOff = i;
|
||
|
|
|
||
|
|
i = (int)_self.Bh[bi].Dlen;
|
||
|
|
|
||
|
|
/* if(i > remain)
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
Array.Copy(_self.Bh[bi].Digest, 0, result, resultOff, i);
|
||
|
|
resultOff += i;
|
||
|
|
remain -= i;
|
||
|
|
|
||
|
|
if(h != 0)
|
||
|
|
{
|
||
|
|
/* if(remain <= 0)
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
result[resultOff] = _b64[_self.Bh[bi].H % 64];
|
||
|
|
|
||
|
|
if(i < 3 ||
|
||
|
|
result[resultOff] != result[resultOff - 1] ||
|
||
|
|
result[resultOff] != result[resultOff - 2] ||
|
||
|
|
result[resultOff] != result[resultOff - 3])
|
||
|
|
{
|
||
|
|
++resultOff;
|
||
|
|
--remain;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if(_self.Bh[bi].Digest[i] != 0)
|
||
|
|
{
|
||
|
|
if(remain <= 0)
|
||
|
|
throw new Exception("Assertion failed");
|
||
|
|
|
||
|
|
result[resultOff] = _self.Bh[bi].Digest[i];
|
||
|
|
|
||
|
|
if(i < 3 ||
|
||
|
|
result[resultOff] != result[resultOff - 1] ||
|
||
|
|
result[resultOff] != result[resultOff - 2] ||
|
||
|
|
result[resultOff] != result[resultOff - 3])
|
||
|
|
{
|
||
|
|
++resultOff;
|
||
|
|
--remain;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* if(remain <= 0)
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
result[resultOff++] = 0x3A; // ':'
|
||
|
|
--remain;
|
||
|
|
|
||
|
|
if(bi < _self.Bhend - 1)
|
||
|
|
{
|
||
|
|
++bi;
|
||
|
|
i = (int)_self.Bh[bi].Dlen;
|
||
|
|
|
||
|
|
/* if(i > remain)
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
Array.Copy(_self.Bh[bi].Digest, 0, result, resultOff, i);
|
||
|
|
resultOff += i;
|
||
|
|
remain -= i;
|
||
|
|
|
||
|
|
if(h != 0)
|
||
|
|
{
|
||
|
|
/* if(remain <= 0)
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
h = _self.Bh[bi].Halfh;
|
||
|
|
result[resultOff] = _b64[h % 64];
|
||
|
|
|
||
|
|
if(i < 3 ||
|
||
|
|
result[resultOff] != result[resultOff - 1] ||
|
||
|
|
result[resultOff] != result[resultOff - 2] ||
|
||
|
|
result[resultOff] != result[resultOff - 3])
|
||
|
|
{
|
||
|
|
++resultOff;
|
||
|
|
--remain;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
i = _self.Bh[bi].Halfdigest;
|
||
|
|
|
||
|
|
if(i != 0)
|
||
|
|
{
|
||
|
|
/* if(remain <= 0)
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
result[resultOff] = (byte)i;
|
||
|
|
|
||
|
|
if(i < 3 ||
|
||
|
|
result[resultOff] != result[resultOff - 1] ||
|
||
|
|
result[resultOff] != result[resultOff - 2] ||
|
||
|
|
result[resultOff] != result[resultOff - 3])
|
||
|
|
{
|
||
|
|
++resultOff;
|
||
|
|
--remain;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if(h != 0)
|
||
|
|
{
|
||
|
|
/* if(_self.Bh[bi].Dlen != 0)
|
||
|
|
throw new Exception("Assertion failed");
|
||
|
|
|
||
|
|
if(remain <= 0)
|
||
|
|
throw new Exception("Assertion failed");*/
|
||
|
|
|
||
|
|
result[resultOff++] = _b64[_self.Bh[bi].H % 64];
|
||
|
|
/* No need to bother with FUZZY_FLAG_ELIMSEQ, because this
|
||
|
|
* digest has length 1. */
|
||
|
|
--remain;
|
||
|
|
}
|
||
|
|
|
||
|
|
result[resultOff] = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>Gets the hash of a file</summary>
|
||
|
|
/// <param name="filename">File path.</param>
|
||
|
|
public static byte[] File(string filename) =>
|
||
|
|
throw new NotImplementedException("SpamSum does not have a binary representation.");
|
||
|
|
|
||
|
|
/// <summary>Gets the hash of a file in hexadecimal and as a byte array.</summary>
|
||
|
|
/// <param name="filename">File path.</param>
|
||
|
|
/// <param name="hash">Byte array of the hash value.</param>
|
||
|
|
public static string File(string filename, out byte[] hash) =>
|
||
|
|
throw new NotImplementedException("Not yet implemented.");
|
||
|
|
|
||
|
|
/// <summary>Gets the hash of the specified data buffer.</summary>
|
||
|
|
/// <param name="data">Data buffer.</param>
|
||
|
|
/// <param name="len">Length of the data buffer to hash.</param>
|
||
|
|
/// <param name="hash">null</param>
|
||
|
|
/// <returns>Base64 representation of SpamSum $blocksize:$hash:$hash</returns>
|
||
|
|
public static string Data(byte[] data, uint len, out byte[] hash)
|
||
|
|
{
|
||
|
|
var fuzzyContext = new SpamSumContext();
|
||
|
|
|
||
|
|
fuzzyContext.Update(data, len);
|
||
|
|
|
||
|
|
hash = null;
|
||
|
|
|
||
|
|
return fuzzyContext.End();
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>Gets the hash of the specified data buffer.</summary>
|
||
|
|
/// <param name="data">Data buffer.</param>
|
||
|
|
/// <param name="hash">null</param>
|
||
|
|
/// <returns>Base64 representation of SpamSum $blocksize:$hash:$hash</returns>
|
||
|
|
public static string Data(byte[] data, out byte[] hash) => Data(data, (uint)data.Length, out hash);
|
||
|
|
|
||
|
|
// Converts an ASCII null-terminated string to .NET string
|
||
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||
|
|
static string CToString(byte[] cString)
|
||
|
|
{
|
||
|
|
int count = 0;
|
||
|
|
|
||
|
|
// ReSharper disable once LoopCanBeConvertedToQuery
|
||
|
|
// LINQ is six times slower
|
||
|
|
foreach(byte c in cString)
|
||
|
|
{
|
||
|
|
if(c == 0)
|
||
|
|
break;
|
||
|
|
|
||
|
|
count++;
|
||
|
|
}
|
||
|
|
|
||
|
|
return Encoding.ASCII.GetString(cString, 0, count);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct RollState
|
||
|
|
{
|
||
|
|
public byte[] Window;
|
||
|
|
|
||
|
|
// ROLLING_WINDOW
|
||
|
|
public uint H1;
|
||
|
|
public uint H2;
|
||
|
|
public uint H3;
|
||
|
|
public uint N;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* A blockhash contains a signature state for a specific (implicit) blocksize.
|
||
|
|
* The blocksize is given by SSDEEP_BS(index). The h and halfh members are the
|
||
|
|
* FNV hashes, where halfh stops to be reset after digest is SPAMSUM_LENGTH/2
|
||
|
|
* long. The halfh hash is needed be able to truncate digest for the second
|
||
|
|
* output hash to stay compatible with ssdeep output. */
|
||
|
|
struct BlockhashContext
|
||
|
|
{
|
||
|
|
public uint H;
|
||
|
|
public uint Halfh;
|
||
|
|
public byte[] Digest;
|
||
|
|
|
||
|
|
// SPAMSUM_LENGTH
|
||
|
|
public byte Halfdigest;
|
||
|
|
public uint Dlen;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct FuzzyState
|
||
|
|
{
|
||
|
|
public uint Bhstart;
|
||
|
|
public uint Bhend;
|
||
|
|
public BlockhashContext[] Bh;
|
||
|
|
|
||
|
|
//NUM_BLOCKHASHES
|
||
|
|
public ulong TotalSize;
|
||
|
|
public RollState Roll;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|