mirror of
https://github.com/crskycode/GARbro.git
synced 2024-11-27 07:34:00 +08:00
(DxLib): support version 7 encryption.
This commit is contained in:
morkt
parent
bc31594265
commit
96d113115b
@ -162,6 +162,7 @@
|
||||
<Compile Include="DigitalWorks\ImageTX.cs" />
|
||||
<Compile Include="DirectDraw\DxtDecoder.cs" />
|
||||
<Compile Include="DjSystem\ArcDAT.cs" />
|
||||
<Compile Include="DxLib\DxKey.cs" />
|
||||
<Compile Include="elf\ArcAi5DAT.cs" />
|
||||
<Compile Include="elf\ImageRMT.cs" />
|
||||
<Compile Include="EmbeddedResource.cs" />
|
||||
|
||||
@ -28,7 +28,6 @@ using System.Collections.Generic;
|
||||
using System.ComponentModel.Composition;
|
||||
using System.Diagnostics;
|
||||
using System.IO;
|
||||
using System.Linq;
|
||||
using System.Text;
|
||||
using GameRes.Utility;
|
||||
|
||||
@ -36,13 +35,13 @@ namespace GameRes.Formats.DxLib
|
||||
{
|
||||
internal class DxArchive : ArcFile
|
||||
{
|
||||
public readonly byte[] Key;
|
||||
public readonly IDxKey Encryption;
|
||||
public readonly int Version;
|
||||
|
||||
public DxArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, byte[] key, int version)
|
||||
public DxArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, IDxKey enc, int version)
|
||||
: base (arc, impl, dir)
|
||||
{
|
||||
Key = key;
|
||||
Encryption = enc;
|
||||
Version = version;
|
||||
}
|
||||
}
|
||||
@ -50,7 +49,7 @@ namespace GameRes.Formats.DxLib
|
||||
[Serializable]
|
||||
public class DxScheme : ResourceScheme
|
||||
{
|
||||
public IList<byte[]> KnownKeys;
|
||||
public IList<IDxKey> KnownKeys;
|
||||
}
|
||||
|
||||
[Export(typeof(ArchiveFormat))]
|
||||
@ -67,36 +66,37 @@ namespace GameRes.Formats.DxLib
|
||||
Extensions = new string[] { "dxa", "hud", "usi", "med", "dat", "bin", "bcx", "wolf" };
|
||||
Signatures = new uint[] {
|
||||
0x19EF8ED4, 0xA9FCCEDD, 0x0AEE0FD3, 0x5523F211, 0x5524F211, 0x69FC5FE4, 0x09E19ED9, 0x7DCC5D83,
|
||||
0
|
||||
0xC55D4473, 0
|
||||
};
|
||||
}
|
||||
|
||||
DxScheme DefaultScheme = new DxScheme { KnownKeys = new List<byte[]>() };
|
||||
DxScheme DefaultScheme = new DxScheme { KnownKeys = new List<IDxKey>() };
|
||||
|
||||
public IList<byte[]> KnownKeys { get { return DefaultScheme.KnownKeys; } }
|
||||
public IList<IDxKey> KnownKeys { get { return DefaultScheme.KnownKeys; } }
|
||||
|
||||
public override ArcFile TryOpen (ArcView file)
|
||||
{
|
||||
if (file.MaxOffset < 0x1C)
|
||||
return null;
|
||||
uint signature = file.View.ReadUInt32 (0);
|
||||
foreach (var key in KnownKeys)
|
||||
foreach (var enc in KnownKeys)
|
||||
{
|
||||
var key = enc.Key;
|
||||
uint sig_key = LittleEndian.ToUInt32 (key, 0);
|
||||
uint sig_test = signature ^ sig_key;
|
||||
int version = (int)(sig_test >> 16);
|
||||
if (0x5844 == (sig_test & 0xFFFF) && version <= 6) // 'DX'
|
||||
if (0x5844 == (sig_test & 0xFFFF) && version <= 7) // 'DX'
|
||||
{
|
||||
var dir = ReadIndex (file, version, key);
|
||||
if (null != dir)
|
||||
{
|
||||
if (KnownKeys[0] != key)
|
||||
if (KnownKeys[0] != enc)
|
||||
{
|
||||
// move last used key to the top of the known keys list
|
||||
KnownKeys.Remove (key);
|
||||
KnownKeys.Insert (0, key);
|
||||
KnownKeys.Remove (enc);
|
||||
KnownKeys.Insert (0, enc);
|
||||
}
|
||||
return new DxArchive (file, this, dir, key, version);
|
||||
return new DxArchive (file, this, dir, enc, version);
|
||||
}
|
||||
return null;
|
||||
}
|
||||
@ -104,8 +104,9 @@ namespace GameRes.Formats.DxLib
|
||||
var arc = GuessKey (file);
|
||||
if (arc != null)
|
||||
{
|
||||
KnownKeys.Insert (0, arc.Key);
|
||||
Trace.WriteLine (string.Format ("Restored key '{0}'", RestoreKey (arc.Key)), "[DXA]");
|
||||
var encryption = arc.Encryption;
|
||||
KnownKeys.Insert (0, encryption);
|
||||
Trace.WriteLine (string.Format ("Restored key '{0}'", encryption.Password, "[DXA]"));
|
||||
}
|
||||
return arc;
|
||||
}
|
||||
@ -119,7 +120,7 @@ namespace GameRes.Formats.DxLib
|
||||
{
|
||||
var dir = ReadIndex (file, 6, key);
|
||||
if (dir != null)
|
||||
return new DxArchive (file, this, dir, key, 6);
|
||||
return new DxArchive (file, this, dir, new DxKey (key), 6);
|
||||
}
|
||||
key = new byte[12];
|
||||
for (short version = 4; version >= 1; --version)
|
||||
@ -144,7 +145,7 @@ namespace GameRes.Formats.DxLib
|
||||
{
|
||||
var dir = ReadIndex (file, version, key);
|
||||
if (null != dir)
|
||||
return new DxArchive (file, this, dir, key, version);
|
||||
return new DxArchive (file, this, dir, new DxKey (key), version);
|
||||
}
|
||||
catch { /* ignore parse errors */ }
|
||||
}
|
||||
@ -186,7 +187,8 @@ namespace GameRes.Formats.DxLib
|
||||
{
|
||||
dec_offset = dx_ent.UnpackedSize;
|
||||
}
|
||||
input = new EncryptedStream (input, dec_offset, dx_arc.Key);
|
||||
var key = dx_arc.Encryption.GetEntryKey (dx_ent.Name);
|
||||
input = new EncryptedStream (input, dec_offset, key);
|
||||
if (!dx_ent.IsPacked)
|
||||
return input;
|
||||
using (input)
|
||||
@ -265,12 +267,12 @@ namespace GameRes.Formats.DxLib
|
||||
DxHeader dx = null;
|
||||
if (version <= 4)
|
||||
dx = ReadArcHeaderV4 (file, version, key);
|
||||
else if (6 == version)
|
||||
else if (version >= 6)
|
||||
dx = ReadArcHeaderV6 (file, version, key);
|
||||
if (null == dx || dx.DirTable >= dx.IndexSize || dx.FileTable >= dx.IndexSize)
|
||||
return null;
|
||||
using (var encrypted = file.CreateStream (dx.IndexOffset, dx.IndexSize))
|
||||
using (var index = new EncryptedStream (encrypted, 6 == version ? 0 : dx.IndexOffset, key))
|
||||
using (var index = new EncryptedStream (encrypted, version >= 6 ? 0 : dx.IndexOffset, key))
|
||||
using (var reader = IndexReader.Create (dx, version, index))
|
||||
{
|
||||
return reader.Read();
|
||||
@ -320,54 +322,6 @@ namespace GameRes.Formats.DxLib
|
||||
}
|
||||
}
|
||||
|
||||
public static byte[] CreateKey (string keyword)
|
||||
{
|
||||
byte[] key;
|
||||
if (string.IsNullOrEmpty (keyword))
|
||||
{
|
||||
key = Enumerable.Repeat<byte> (0xAA, 12).ToArray();
|
||||
}
|
||||
else
|
||||
{
|
||||
key = new byte[12];
|
||||
int char_count = Math.Min (keyword.Length, 12);
|
||||
int length = Encodings.cp932.GetBytes (keyword, 0, char_count, key, 0);
|
||||
if (length < 12)
|
||||
Binary.CopyOverlapped (key, 0, length, 12-length);
|
||||
}
|
||||
key[0] ^= 0xFF;
|
||||
key[1] = Binary.RotByteR (key[1], 4);
|
||||
key[2] ^= 0x8A;
|
||||
key[3] = (byte)~Binary.RotByteR (key[3], 4);
|
||||
key[4] ^= 0xFF;
|
||||
key[5] ^= 0xAC;
|
||||
key[6] ^= 0xFF;
|
||||
key[7] = (byte)~Binary.RotByteR (key[7], 3);
|
||||
key[8] = Binary.RotByteL (key[8], 3);
|
||||
key[9] ^= 0x7F;
|
||||
key[10] = (byte)(Binary.RotByteR (key[10], 4) ^ 0xD6);
|
||||
key[11] ^= 0xCC;
|
||||
return key;
|
||||
}
|
||||
|
||||
string RestoreKey (byte[] key)
|
||||
{
|
||||
var bin = key.Clone() as byte[];
|
||||
bin[0] ^= 0xFF;
|
||||
bin[1] = Binary.RotByteL (bin[1], 4);
|
||||
bin[2] ^= 0x8A;
|
||||
bin[3] = Binary.RotByteL ((byte)~bin[3], 4);
|
||||
bin[4] ^= 0xFF;
|
||||
bin[5] ^= 0xAC;
|
||||
bin[6] ^= 0xFF;
|
||||
bin[7] = Binary.RotByteL ((byte)~bin[7], 3);
|
||||
bin[8] = Binary.RotByteR (bin[8], 3);
|
||||
bin[9] ^= 0x7F;
|
||||
bin[10] = Binary.RotByteL ((byte)(bin[10] ^ 0xD6), 4);
|
||||
bin[11] ^= 0xCC;
|
||||
return Encodings.cp932.GetString (bin);
|
||||
}
|
||||
|
||||
public override ResourceScheme Scheme
|
||||
{
|
||||
get { return DefaultScheme; }
|
||||
@ -393,6 +347,8 @@ namespace GameRes.Formats.DxLib
|
||||
protected Encoding m_encoding;
|
||||
protected List<Entry> m_dir = new List<Entry>();
|
||||
|
||||
internal int Version { get { return m_version; } }
|
||||
|
||||
protected IndexReader (DxHeader header, int version, Stream input)
|
||||
{
|
||||
m_header = header;
|
||||
@ -405,7 +361,7 @@ namespace GameRes.Formats.DxLib
|
||||
{
|
||||
if (version <= 4)
|
||||
return new IndexReaderV2 (header, version, input);
|
||||
else if (6 == version)
|
||||
else if (version >= 6)
|
||||
return new IndexReaderV6 (header, version, input);
|
||||
else
|
||||
throw new InvalidFormatException ("Not supported DX archive version.");
|
||||
@ -446,7 +402,7 @@ namespace GameRes.Formats.DxLib
|
||||
|
||||
public IndexReaderV2 (DxHeader header, int version, Stream input) : base (header, version, input)
|
||||
{
|
||||
m_entry_size = m_version >= 2 ? 0x2C : 0x28;
|
||||
m_entry_size = Version >= 2 ? 0x2C : 0x28;
|
||||
}
|
||||
|
||||
private class DxDirectory
|
||||
@ -494,7 +450,7 @@ namespace GameRes.Formats.DxLib
|
||||
{
|
||||
uint size = m_input.ReadUInt32();
|
||||
int packed_size = -1;
|
||||
if (m_version >= 2)
|
||||
if (Version >= 2)
|
||||
packed_size = m_input.ReadInt32();
|
||||
var entry = FormatCatalog.Instance.Create<PackedEntry> (Path.Combine (root, ExtractFileName (name_offset)));
|
||||
entry.Offset = m_header.BaseOffset + offset;
|
||||
|
||||
156
ArcFormats/DxLib/DxKey.cs
Normal file
156
ArcFormats/DxLib/DxKey.cs
Normal file
@ -0,0 +1,156 @@
|
||||
//! \file DxKey.cs
|
||||
//! \date 2019 Feb 01
|
||||
//! \brief DxLib archive encryption classes.
|
||||
//
|
||||
// Copyright (C) 2019 by morkt
|
||||
//
|
||||
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
// of this software and associated documentation files (the "Software"), to
|
||||
// deal in the Software without restriction, including without limitation the
|
||||
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
||||
// sell copies of the Software, and to permit persons to whom the Software is
|
||||
// furnished to do so, subject to the following conditions:
|
||||
//
|
||||
// The above copyright notice and this permission notice shall be included in
|
||||
// all copies or substantial portions of the Software.
|
||||
//
|
||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
||||
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
||||
// IN THE SOFTWARE.
|
||||
//
|
||||
|
||||
using System;
|
||||
using System.Linq;
|
||||
using System.Security.Cryptography;
|
||||
using GameRes.Utility;
|
||||
|
||||
namespace GameRes.Formats.DxLib
|
||||
{
|
||||
public interface IDxKey
|
||||
{
|
||||
string Password { get; }
|
||||
byte[] Key { get; }
|
||||
|
||||
byte[] GetEntryKey (string name);
|
||||
}
|
||||
|
||||
[Serializable]
|
||||
public class DxKey : IDxKey
|
||||
{
|
||||
string m_password;
|
||||
byte[] m_key;
|
||||
|
||||
public DxKey () : this (string.Empty)
|
||||
{
|
||||
}
|
||||
|
||||
public DxKey (string password)
|
||||
{
|
||||
Password = password;
|
||||
}
|
||||
|
||||
public DxKey (byte[] key)
|
||||
{
|
||||
Key = key;
|
||||
}
|
||||
|
||||
public string Password
|
||||
{
|
||||
get { return m_password; }
|
||||
set { m_password = value; m_key = null; }
|
||||
}
|
||||
|
||||
public byte[] Key
|
||||
{
|
||||
get { return m_key ?? (m_key = CreateKey (m_password)); }
|
||||
set { m_key = value; m_password = RestoreKey (m_key); }
|
||||
}
|
||||
|
||||
public virtual byte[] GetEntryKey (string name)
|
||||
{
|
||||
return Key;
|
||||
}
|
||||
|
||||
protected virtual byte[] CreateKey (string keyword)
|
||||
{
|
||||
byte[] key;
|
||||
if (string.IsNullOrEmpty (keyword))
|
||||
{
|
||||
key = Enumerable.Repeat<byte> (0xAA, 12).ToArray();
|
||||
}
|
||||
else
|
||||
{
|
||||
key = new byte[12];
|
||||
int char_count = Math.Min (keyword.Length, 12);
|
||||
int length = Encodings.cp932.GetBytes (keyword, 0, char_count, key, 0);
|
||||
if (length < 12)
|
||||
Binary.CopyOverlapped (key, 0, length, 12-length);
|
||||
}
|
||||
key[0] ^= 0xFF;
|
||||
key[1] = Binary.RotByteR (key[1], 4);
|
||||
key[2] ^= 0x8A;
|
||||
key[3] = (byte)~Binary.RotByteR (key[3], 4);
|
||||
key[4] ^= 0xFF;
|
||||
key[5] ^= 0xAC;
|
||||
key[6] ^= 0xFF;
|
||||
key[7] = (byte)~Binary.RotByteR (key[7], 3);
|
||||
key[8] = Binary.RotByteL (key[8], 3);
|
||||
key[9] ^= 0x7F;
|
||||
key[10] = (byte)(Binary.RotByteR (key[10], 4) ^ 0xD6);
|
||||
key[11] ^= 0xCC;
|
||||
return key;
|
||||
}
|
||||
|
||||
protected virtual string RestoreKey (byte[] key)
|
||||
{
|
||||
var bin = key.Clone() as byte[];
|
||||
bin[0] ^= 0xFF;
|
||||
bin[1] = Binary.RotByteL (bin[1], 4);
|
||||
bin[2] ^= 0x8A;
|
||||
bin[3] = Binary.RotByteL ((byte)~bin[3], 4);
|
||||
bin[4] ^= 0xFF;
|
||||
bin[5] ^= 0xAC;
|
||||
bin[6] ^= 0xFF;
|
||||
bin[7] = Binary.RotByteL ((byte)~bin[7], 3);
|
||||
bin[8] = Binary.RotByteR (bin[8], 3);
|
||||
bin[9] ^= 0x7F;
|
||||
bin[10] = Binary.RotByteL ((byte)(bin[10] ^ 0xD6), 4);
|
||||
bin[11] ^= 0xCC;
|
||||
return Encodings.cp932.GetString (bin);
|
||||
}
|
||||
}
|
||||
|
||||
[Serializable]
|
||||
public class DxKey7 : DxKey
|
||||
{
|
||||
public DxKey7 (string password) : base (password ?? "DXARC")
|
||||
{
|
||||
}
|
||||
|
||||
public override byte[] GetEntryKey (string name)
|
||||
{
|
||||
var password = this.Password;
|
||||
var path = name.Split ('\\', '/');
|
||||
password += string.Join ("", path.Reverse().Select (n => n.ToUpperInvariant()));
|
||||
return CreateKey (password);
|
||||
}
|
||||
|
||||
protected override byte[] CreateKey (string keyword)
|
||||
{
|
||||
using (var sha = SHA256.Create())
|
||||
{
|
||||
var bytes = Encodings.cp932.GetBytes (keyword);
|
||||
return sha.ComputeHash (bytes);
|
||||
}
|
||||
}
|
||||
|
||||
protected override string RestoreKey (byte[] key)
|
||||
{
|
||||
throw new NotSupportedException ("SHA-256 key cannot be restored.");
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user