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(McgDecoder): added faulty brute-force key guessing.

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disabled in relesase build.
This commit is contained in:
morkt 2016-02-11 09:37:05 +04:00
parent 45e7b81cc0
commit 0e57e73ded
1 changed files with 21 additions and 0 deletions
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21
ArcFormats/FC01/ImageMCG.cs
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@ -192,6 +192,27 @@ namespace GameRes.Formats.FC01
{
MrgOpener.Decrypt (m_input, 0, m_input.Length-1, m_key);
}
#if DEBUG
else // bruteforce key *in debug build only*
{
for (int key = 1; key < 256; ++key)
{
var copy = m_input.Clone() as byte[];
MrgOpener.Decrypt (copy, 0, copy.Length-1, (byte)key);
using (var input = new MemoryStream (copy))
using (var lzss = new MrgLzssReader (input, m_input.Length, Stride * m_height))
{
lzss.Unpack();
if (input.Length - input.Position <= 1)
{
m_output = lzss.Data;
m_key = (byte)key;
return;
}
}
}
}
#endif
using (var input = new MemoryStream (m_input))
using (var lzss = new MrgLzssReader (input, m_input.Length, Stride * m_height))
{