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implemented KiriKiri "Cx" encryption scheme.

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This commit is contained in:
morkt
2014-09-08 08:02:07 +04:00
parent aea3a47ccc
commit a267a8dd1f
3 changed files with 952 additions and 9 deletions
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19
ArcFormats/ArcXP3.cs
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@@ -84,11 +84,14 @@ namespace GameRes.Formats.KiriKiri
public static readonly Dictionary<string, ICrypt> KnownSchemes = new Dictionary<string, ICrypt> {
{ arcStrings.ArcNoEncryption, NoCryptAlgorithm },
{ "Fate/Stay Night", new FateCrypt() },
{ "Swan Song", new SwanSongCrypt() },
{ "Cafe Sourire", new XorCrypt (0xcd) },
{ "Seirei Tenshou", new SeitenCrypt() },
{ "Coμ", new ComyuCrypt() },
{ "Fate/hollow ataraxia", new FateHACrypt() },
{ "Fate/stay night", new FateCrypt() },
{ "Imouto Style", new ImoutoStyleCrypt() },
{ "Okiba ga Nai!", new OkibaCrypt() },
{ "Seirei Tenshou", new SeitenCrypt() },
{ "Swan Song", new SwanSongCrypt() },
};
public override ArcFile TryOpen (ArcView file)
@@ -104,7 +107,7 @@ namespace GameRes.Formats.KiriKiri
return null;
dir_offset = file.View.ReadInt64 (0x20);
}
if (dir_offset >= file.MaxOffset)
if (dir_offset < 0x13 || dir_offset >= file.MaxOffset)
return null;
int header_type = file.View.ReadByte (dir_offset);
@@ -588,7 +591,7 @@ NextEntry:
long m_offset = 0;
bool m_eof = false;
public override bool CanRead { get { return true; } }
public override bool CanRead { get { return m_stream != null; } }
public override bool CanSeek { get { return false; } }
public override bool CanWrite { get { return false; } }
public override long Length { get { return m_entry.UnpackedSize; } }
@@ -616,11 +619,9 @@ NextEntry:
if (null != m_stream)
m_stream.Dispose();
var segment = m_segment.Current;
m_stream = m_file.CreateStream (segment.Offset, segment.Size);
if (segment.IsCompressed)
m_stream = new ZLibStream (m_file.CreateStream (segment.Offset, segment.PackedSize),
CompressionMode.Decompress);
else
m_stream = m_file.CreateStream (segment.Offset, segment.Size);
m_stream = new ZLibStream (m_stream, CompressionMode.Decompress);
}
public override int Read (byte[] buffer, int offset, int count)